TSTP Solution File: SEU675^1 by Satallax---3.5

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Satallax---3.5
% Problem  : SEU675^1 : TPTP v8.1.0. Released v3.7.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : satallax -E eprover-ho -P picomus -M modes -p tstp -t %d %s

% Computer : n023.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8042.1875MB
% OS       : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit  : 600s
% DateTime : Tue Jul 19 13:56:16 EDT 2022

% Result   : Theorem 222.88s 222.35s
% Output   : Proof 222.88s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    3
%            Number of leaves      :  616
% Syntax   : Number of formulae    :  622 ( 201 unt;  29 typ; 195 def)
%            Number of atoms       : 4460 ( 848 equ;   0 cnn)
%            Maximal formula atoms :  314 (   7 avg)
%            Number of connectives : 14158 (1019   ~; 196   |;   0   &;9399   @)
%                                         ( 196 <=>;3342  =>;   0  <=;   0 <~>)
%            Maximal formula depth :  150 (   6 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :  358 ( 358   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :  422 ( 419 usr; 396 con; 0-4 aty)
%                                         (   6  !!;   0  ??;   0 @@+;   0 @@-)
%            Number of variables   : 3865 (  73   ^3792   !;   0   ?;3865   :)

% Comments : 
%------------------------------------------------------------------------------
thf(ty_kfst,type,
    kfst: $i > $i ).

thf(ty_binintersect,type,
    binintersect: $i > $i > $i ).

thf(ty_singleton,type,
    singleton: $i > $o ).

thf(ty_subset,type,
    subset: $i > $i > $o ).

thf(ty_setunion,type,
    setunion: $i > $i ).

thf(ty_iskpair,type,
    iskpair: $i > $o ).

thf(ty_eigen__1,type,
    eigen__1: $i ).

thf(ty_eigen__0,type,
    eigen__0: $i ).

thf(ty_cartprod,type,
    cartprod: $i > $i > $i ).

thf(ty_breln,type,
    breln: $i > $i > $i > $o ).

thf(ty_emptyset,type,
    emptyset: $i ).

thf(ty_setminus,type,
    setminus: $i > $i > $i ).

thf(ty_kpair,type,
    kpair: $i > $i > $i ).

thf(ty_descr,type,
    descr: ( $i > $o ) > $i ).

thf(ty_ap,type,
    ap: $i > $i > $i > $i > $i ).

thf(ty_symdiff,type,
    symdiff: $i > $i > $i ).

thf(ty_nonempty,type,
    nonempty: $i > $o ).

thf(ty_dsetconstr,type,
    dsetconstr: $i > ( $i > $o ) > $i ).

thf(ty_powerset,type,
    powerset: $i > $i ).

thf(ty_omega,type,
    omega: $i ).

thf(ty_ex1,type,
    ex1: $i > ( $i > $o ) > $o ).

thf(ty_ksnd,type,
    ksnd: $i > $i ).

thf(ty_prop2set,type,
    prop2set: $o > $i ).

thf(ty_exu,type,
    exu: ( $i > $o ) > $o ).

thf(ty_set2prop,type,
    set2prop: $i > $o ).

thf(ty_in,type,
    in: $i > $i > $o ).

thf(ty_binunion,type,
    binunion: $i > $i > $i ).

thf(ty_dpsetconstr,type,
    dpsetconstr: $i > $i > ( $i > $i > $o ) > $i ).

thf(ty_setadjoin,type,
    setadjoin: $i > $i > $i ).

thf(h0,assumption,
    ! [X1: $i > $o,X2: $i] :
      ( ( X1 @ X2 )
     => ( X1 @ ( eps__0 @ X1 ) ) ),
    introduced(assumption,[]) ).

thf(eigendef_eigen__1,definition,
    ( eigen__1
    = ( eps__0
      @ ^ [X1: $i] :
          ~ ! [X2: $i] :
              ( ( in @ X2
                @ ( dsetconstr @ ( powerset @ ( cartprod @ eigen__0 @ X1 ) )
                  @ ^ [X3: $i] :
                      ~ ( ( breln @ eigen__0 @ X1 @ X3 )
                       => ~ ! [X4: $i] :
                              ( ( in @ X4 @ eigen__0 )
                             => ( ex1 @ X1
                                @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) ) ) ) )
             => ~ ( ( breln @ eigen__0 @ X1 @ X2 )
                 => ~ ! [X3: $i] :
                        ( ( in @ X3 @ eigen__0 )
                       => ( ex1 @ X1
                          @ ^ [X4: $i] : ( in @ ( kpair @ X3 @ X4 ) @ X2 ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[eigen__1])]) ).

thf(eigendef_eigen__0,definition,
    ( eigen__0
    = ( eps__0
      @ ^ [X1: $i] :
          ~ ! [X2: $i,X3: $i] :
              ( ( in @ X3
                @ ( dsetconstr @ ( powerset @ ( cartprod @ X1 @ X2 ) )
                  @ ^ [X4: $i] :
                      ~ ( ( breln @ X1 @ X2 @ X4 )
                       => ~ ! [X5: $i] :
                              ( ( in @ X5 @ X1 )
                             => ( ex1 @ X2
                                @ ^ [X6: $i] : ( in @ ( kpair @ X5 @ X6 ) @ X4 ) ) ) ) ) )
             => ~ ( ( breln @ X1 @ X2 @ X3 )
                 => ~ ! [X4: $i] :
                        ( ( in @ X4 @ X1 )
                       => ( ex1 @ X2
                          @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[eigen__0])]) ).

thf(sP1,plain,
    ( sP1
  <=> ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
          ( ( ( kpair @ X1 @ X2 )
            = ( kpair @ X3 @ X4 ) )
         => ( X1 = X3 ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( X1 = X2 )
           => ( ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) )
              = ( setadjoin @ X1 @ emptyset ) ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( X1 = X2 )
             => ( ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) )
                = ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ emptyset ) ) )
         => ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
                ( ( ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) )
                  = ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) )
               => ( ( X3 = X4 )
                 => ( X2 = X4 ) ) )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                    = ( setadjoin @ X3 @ emptyset ) )
                 => ( X1 = X2 ) )
             => ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
                    ( ( ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) )
                      = ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) )
                   => ( X2 = X4 ) )
               => ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
                      ( ( ( kpair @ X1 @ X2 )
                        = ( kpair @ X3 @ X4 ) )
                     => ( X2 = X4 ) )
                 => ( ! [X1: $i] :
                        ( ( iskpair @ X1 )
                       => ( singleton
                          @ ( dsetconstr @ ( setunion @ X1 )
                            @ ^ [X2: $i] :
                                ( X1
                                = ( kpair @ ( kfst @ X1 ) @ X2 ) ) ) ) )
                   => ( ! [X1: $i,X2: $i] :
                          ( ( ksnd @ ( kpair @ X1 @ X2 ) )
                          = X2 )
                     => ( ! [X1: $i] :
                            ( ( iskpair @ X1 )
                           => ( ( kpair @ ( kfst @ X1 ) @ ( ksnd @ X1 ) )
                              = X1 ) )
                       => ( ! [X1: $i,X2: $i,X3: $i] :
                              ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                             => ( in @ ( ksnd @ X3 ) @ X2 ) )
                         => ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
                                ( ( in @ ( kpair @ X3 @ X4 ) @ ( cartprod @ X1 @ X2 ) )
                               => ( in @ X3 @ X1 ) )
                           => ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
                                  ( ( in @ ( kpair @ X3 @ X4 ) @ ( cartprod @ X1 @ X2 ) )
                                 => ( in @ X4 @ X2 ) )
                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ! [X4: $i] :
                                        ( ( in @ X4 @ X2 )
                                       => ( ( kpair @ X3 @ X4 )
                                          = ( kpair @ X3 @ X4 ) ) ) )
                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                      ( ( in @ X3 @ X1 )
                                     => ! [X4: $i] :
                                          ( ( in @ X4 @ X2 )
                                         => ( ( kfst @ ( kpair @ X3 @ X4 ) )
                                            = X3 ) ) )
                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                        ( ( in @ X3 @ X1 )
                                       => ! [X4: $i] :
                                            ( ( in @ X4 @ X2 )
                                           => ( ( ksnd @ ( kpair @ X3 @ X4 ) )
                                              = X4 ) ) )
                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                          ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                                         => ( ( kpair @ ( kfst @ X3 ) @ ( ksnd @ X3 ) )
                                            = X3 ) )
                                     => ( ! [X1: $i,X2: $i,X3: $i > $i > $o,X4: $i] :
                                            ( ( in @ X4 @ X1 )
                                           => ! [X5: $i] :
                                                ( ( in @ X5 @ X2 )
                                               => ( ( X3 @ X4 @ X5 )
                                                 => ( in @ ( kpair @ X4 @ X5 ) @ ( dpsetconstr @ X1 @ X2 @ X3 ) ) ) ) )
                                       => ( ! [X1: $i,X2: $i,X3: $i > $i > $o] : ( subset @ ( dpsetconstr @ X1 @ X2 @ X3 ) @ ( cartprod @ X1 @ X2 ) )
                                         => ( ! [X1: $i,X2: $i,X3: $i > $i > $o] : ( breln @ X1 @ X2 @ ( dpsetconstr @ X1 @ X2 @ X3 ) )
                                           => ( ! [X1: $i,X2: $i,X3: $i > $i > $o,X4: $i] :
                                                  ( ( in @ X4 @ X1 )
                                                 => ! [X5: $i] :
                                                      ( ( in @ X5 @ X2 )
                                                     => ( ( in @ ( kpair @ X4 @ X5 ) @ ( dpsetconstr @ X1 @ X2 @ X3 ) )
                                                       => ( X3 @ X4 @ X5 ) ) ) )
                                             => ( ! [X1: $i,X2: $i,X3: $i > $i > $o,X4: $i,X5: $i] :
                                                    ( ( in @ ( kpair @ X4 @ X5 ) @ ( dpsetconstr @ X1 @ X2 @ X3 ) )
                                                   => ( in @ X4 @ X1 ) )
                                               => ( ! [X1: $i,X2: $i,X3: $i > $i > $o,X4: $i,X5: $i] :
                                                      ( ( in @ ( kpair @ X4 @ X5 ) @ ( dpsetconstr @ X1 @ X2 @ X3 ) )
                                                     => ( in @ X5 @ X2 ) )
                                                 => ( ! [X1: $i,X2: $i,X3: $i > $i > $o,X4: $i,X5: $i] :
                                                        ( ( in @ ( kpair @ X4 @ X5 ) @ ( dpsetconstr @ X1 @ X2 @ X3 ) )
                                                       => ( X3 @ X4 @ X5 ) )
                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                          ( ~ ( ( breln @ X1 @ X2 @ X3 )
                                                             => ~ ! [X4: $i] :
                                                                    ( ( in @ X4 @ X1 )
                                                                   => ( ex1 @ X2
                                                                      @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) ) )
                                                         => ! [X4: $i] :
                                                              ( ( in @ X4 @ X1 )
                                                             => ( singleton
                                                                @ ( dsetconstr @ X2
                                                                  @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) ) ) )
                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                            ( ~ ( ( breln @ X1 @ X2 @ X3 )
                                                               => ~ ! [X4: $i] :
                                                                      ( ( in @ X4 @ X1 )
                                                                     => ( ex1 @ X2
                                                                        @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) ) )
                                                           => ! [X4: $i] :
                                                                ( ( in @ X4 @ X1 )
                                                               => ( in
                                                                  @ ( setunion
                                                                    @ ( dsetconstr @ X2
                                                                      @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) )
                                                                  @ X2 ) ) )
                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                              ( ~ ( ( breln @ X1 @ X2 @ X3 )
                                                                 => ~ ! [X4: $i] :
                                                                        ( ( in @ X4 @ X1 )
                                                                       => ( ex1 @ X2
                                                                          @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) ) )
                                                             => ! [X4: $i] :
                                                                  ( ( in @ X4 @ X1 )
                                                                 => ( in @ ( ap @ X1 @ X2 @ X3 @ X4 ) @ X2 ) ) )
                                                         => ! [X1: $i,X2: $i,X3: $i] :
                                                              ( ( in @ X3
                                                                @ ( dsetconstr @ ( powerset @ ( cartprod @ X1 @ X2 ) )
                                                                  @ ^ [X4: $i] :
                                                                      ~ ( ( breln @ X1 @ X2 @ X4 )
                                                                       => ~ ! [X5: $i] :
                                                                              ( ( in @ X5 @ X1 )
                                                                             => ( ex1 @ X2
                                                                                @ ^ [X6: $i] : ( in @ ( kpair @ X5 @ X6 ) @ X4 ) ) ) ) ) )
                                                             => ~ ( ( breln @ X1 @ X2 @ X3 )
                                                                 => ~ ! [X4: $i] :
                                                                        ( ( in @ X4 @ X1 )
                                                                       => ( ex1 @ X2
                                                                          @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP1])]) ).

thf(sP2,plain,
    ( sP2
  <=> ( ! [X1: $i] :
          ( ! [X2: $i] :
              ~ ( in @ X2 @ X1 )
         => ( X1 = emptyset ) )
     => ( ! [X1: $i] :
            ( ! [X2: $i] :
                ~ ( in @ X2 @ X1 )
           => ( X1 = emptyset ) )
       => ( ! [X1: $i,X2: $i > $o,X3: $i] :
              ( ( in @ X3 @ X1 )
             => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                = ( X2 @ X3 ) ) )
         => ( ! [X1: $i] :
                ( ( nonempty @ X1 )
               => ~ ! [X2: $i] :
                      ~ ( in @ X2 @ X1 ) )
           => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ( ( X2 @ X3 )
                   => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
             => ( ! [X1: $i] :
                    ( ~ ! [X2: $i] :
                          ~ ( in @ X2 @ X1 )
                   => ( nonempty @ X1 ) )
               => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                 => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( in @ X3 @ X2 )
                         => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                     => ( ! [X1: $i,X2: $i,X3: $i] :
                            ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                           => ! [X4: $o] :
                                ( ( ( X3 = X1 )
                                 => X4 )
                               => ( ( ( in @ X3 @ X2 )
                                   => X4 )
                                 => X4 ) ) )
                       => ( ! [X1: $i,X2: $i,X3: $i] :
                              ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                             => ( ( X3 != X1 )
                               => ( in @ X3 @ X2 ) ) )
                         => ( ! [X1: $i] :
                                ( ( dsetconstr @ X1
                                  @ ^ [X2: $i] : ~ $false )
                                = X1 )
                           => ( ! [X1: $i,X2: $i] :
                                  ( ! [X3: $i] :
                                      ( ( in @ X3 @ X2 )
                                     => ( in @ X3 @ X1 ) )
                                 => ( in @ X2 @ ( powerset @ X1 ) ) )
                             => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                               => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                        ( ( in @ X2 @ ( powerset @ X1 ) )
                                       => ( ( in @ X3 @ X2 )
                                         => ( in @ X3 @ X1 ) ) )
                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                          ( ( in @ X2 @ X3 )
                                         => ( ( in @ X3 @ X1 )
                                           => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ( in @ X2 @ ( setunion @ X1 ) )
                                           => ! [X3: $o] :
                                                ( ! [X4: $i] :
                                                    ( ( in @ X2 @ X4 )
                                                   => ( ( in @ X4 @ X1 )
                                                     => X3 ) )
                                               => X3 ) )
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ( in @ X2 @ X1 )
                                             => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                         => ( ! [X1: $i > $o] :
                                                ( ( exu @ X1 )
                                               => ~ ! [X2: $i] :
                                                      ~ ! [X3: $i] :
                                                          ( ( X1 @ X3 )
                                                          = ( X3 = X2 ) ) )
                                           => ( ! [X1: $i] :
                                                  ( ( nonempty @ X1 )
                                                 => ~ ! [X2: $i] :
                                                        ~ ( in @ X2 @ X1 ) )
                                             => ( ! [X1: $i,X2: $i] :
                                                    ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                   => ( X1 = X2 ) )
                                               => ( ! [X1: $i,X2: $i] :
                                                      ( ( X1 != X2 )
                                                     => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                 => ( ! [X1: $i,X2: $i] :
                                                        ( ( X1 = X2 )
                                                       => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                   => ( ! [X1: $i,X2: $i] :
                                                          ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                         => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                            ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                           => ( ( X3 != X1 )
                                                             => ( X3 = X2 ) ) )
                                                       => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                         => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                  ( ~ ! [X3: $i] :
                                                                        ( ( in @ X3 @ X1 )
                                                                       => ~ ( X2 @ X3 ) )
                                                                 => ( ( dsetconstr @ X1 @ X2 )
                                                                   != emptyset ) )
                                                             => ( ! [X1: $i > $o,X2: $i] :
                                                                    ( ( in @ X2 @ emptyset )
                                                                   => ( X1 @ X2 ) )
                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                      ( ~ ! [X3: $i] :
                                                                            ( ( in @ X3 @ X1 )
                                                                           => ( X2 @ X3 ) )
                                                                     => ~ ! [X3: $i] :
                                                                            ( ( in @ X3 @ X1 )
                                                                           => ( X2 @ X3 ) ) )
                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                        ( ! [X3: $i] :
                                                                            ( ( in @ X3 @ X1 )
                                                                           => ~ ( X2 @ X3 ) )
                                                                       => ! [X3: $i] :
                                                                            ( ( in @ X3 @ X1 )
                                                                           => ~ ( X2 @ X3 ) ) )
                                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                                          ( ! [X3: $i] :
                                                                              ( ( in @ X3 @ X1 )
                                                                             => ~ ( X2 @ X3 ) )
                                                                         => ! [X3: $i] :
                                                                              ( ( in @ X3 @ X1 )
                                                                             => ~ ( X2 @ X3 ) ) )
                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                            ( ~ ! [X3: $i] :
                                                                                  ( ( in @ X3 @ X1 )
                                                                                 => ( X2 @ X3 ) )
                                                                           => ~ ! [X3: $i] :
                                                                                  ( ( in @ X3 @ X1 )
                                                                                 => ( X2 @ X3 ) ) )
                                                                       => ( ! [X1: $o] :
                                                                              ( X1
                                                                             => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                         => ( ! [X1: $o] :
                                                                                ( X1
                                                                               => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                  ( ! [X3: $i] :
                                                                                      ( ( in @ X3 @ X1 )
                                                                                     => ~ ( X2 @ X3 ) )
                                                                                 => ! [X3: $i] :
                                                                                      ( ( in @ X3 @ X1 )
                                                                                     => ~ ( X2 @ X3 ) ) )
                                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                                    ( ~ ! [X3: $i] :
                                                                                          ( ( in @ X3 @ X1 )
                                                                                         => ( X2 @ X3 ) )
                                                                                   => ~ ! [X3: $i] :
                                                                                          ( ( in @ X3 @ X1 )
                                                                                         => ( X2 @ X3 ) ) )
                                                                               => ( ! [X1: $i > $o] :
                                                                                      ( ~ ! [X2: $i] :
                                                                                            ( ( X1 @ X2 )
                                                                                           => ~ ! [X3: $i] :
                                                                                                  ( ( X1 @ X3 )
                                                                                                 => ( X2 = X3 ) ) )
                                                                                     => ( exu @ X1 ) )
                                                                                 => ( ! [X1: $i > $o] :
                                                                                        ( ~ ! [X2: $i] :
                                                                                              ~ ( X1 @ X2 )
                                                                                       => ( ! [X2: $i,X3: $i] :
                                                                                              ( ( X1 @ X2 )
                                                                                             => ( ( X1 @ X3 )
                                                                                               => ( X2 = X3 ) ) )
                                                                                         => ( exu @ X1 ) ) )
                                                                                   => ( ! [X1: $i > $o] :
                                                                                          ( ~ ! [X2: $i] :
                                                                                                ~ ! [X3: $i] :
                                                                                                    ( ( X1 @ X3 )
                                                                                                    = ( X3 = X2 ) )
                                                                                         => ( exu @ X1 ) )
                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                            ( ( X1 = X2 )
                                                                                           => ! [X3: $i,X4: $i] :
                                                                                                ( ( X3 = X4 )
                                                                                               => ( ( in @ X3 @ X1 )
                                                                                                 => ( in @ X4 @ X2 ) ) ) )
                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                              ( ( X1 = X2 )
                                                                                             => ! [X3: $i,X4: $i] :
                                                                                                  ( ( X3 = X4 )
                                                                                                 => ( ( in @ X3 @ X1 )
                                                                                                    = ( in @ X4 @ X2 ) ) ) )
                                                                                         => ( ! [X1: $i > $o] :
                                                                                                ( ( exu @ X1 )
                                                                                               => ! [X2: $i,X3: $i] :
                                                                                                    ( ( X1 @ X2 )
                                                                                                   => ( ( X1 @ X3 )
                                                                                                     => ( X2 = X3 ) ) ) )
                                                                                           => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                  ( ! [X3: $i,X4: $i] :
                                                                                                      ( ( X3 = X4 )
                                                                                                     => ( ( X1 @ X3 )
                                                                                                        = ( X2 @ X4 ) ) )
                                                                                                 => ( ( exu @ X1 )
                                                                                                    = ( exu @ X2 ) ) )
                                                                                             => ( ( emptyset = emptyset )
                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                      ( ( X1 = X2 )
                                                                                                     => ! [X3: $i,X4: $i] :
                                                                                                          ( ( X3 = X4 )
                                                                                                         => ( ( setadjoin @ X1 @ X3 )
                                                                                                            = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                        ( ( X1 = X2 )
                                                                                                       => ( ( powerset @ X1 )
                                                                                                          = ( powerset @ X2 ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                          ( ( X1 = X2 )
                                                                                                         => ( ( setunion @ X1 )
                                                                                                            = ( setunion @ X2 ) ) )
                                                                                                     => ( ( omega = omega )
                                                                                                       => ( ! [X1: $i > $o] :
                                                                                                              ( ( exu @ X1 )
                                                                                                             => ! [X2: $i,X3: $i] :
                                                                                                                  ( ( X1 @ X2 )
                                                                                                                 => ( ( X1 @ X3 )
                                                                                                                   => ( X2 = X3 ) ) ) )
                                                                                                         => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                ( ! [X3: $i,X4: $i] :
                                                                                                                    ( ( X3 = X4 )
                                                                                                                   => ( ( X1 @ X3 )
                                                                                                                      = ( X2 @ X4 ) ) )
                                                                                                               => ( ( exu @ X1 )
                                                                                                                 => ( ( exu @ X2 )
                                                                                                                   => ( ( descr @ X1 )
                                                                                                                      = ( descr @ X2 ) ) ) ) )
                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                  ( ( X1 = X2 )
                                                                                                                 => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                      ( ! [X5: $i] :
                                                                                                                          ( ( in @ X5 @ X1 )
                                                                                                                         => ! [X6: $i] :
                                                                                                                              ( ( in @ X6 @ X2 )
                                                                                                                             => ( ( X5 = X6 )
                                                                                                                               => ( ( X3 @ X5 )
                                                                                                                                  = ( X4 @ X6 ) ) ) ) )
                                                                                                                     => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                        = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                    ( ! [X3: $i] :
                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                       => ( in @ X3 @ X2 ) )
                                                                                                                   => ( subset @ X1 @ X2 ) )
                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                      ( ( X1 = X2 )
                                                                                                                     => ( subset @ X2 @ X1 ) )
                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                        ( ( X1 = X2 )
                                                                                                                       => ( subset @ X1 @ X2 ) )
                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                          ( ! [X3: $i] :
                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                             => ( in @ X3 @ X2 ) )
                                                                                                                         => ( subset @ X1 @ X2 ) )
                                                                                                                     => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                                             => ( ( in @ X3 @ X1 )
                                                                                                                               => ( in @ X3 @ X2 ) ) )
                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                                               => ( ~ ( in @ X3 @ X2 )
                                                                                                                                 => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                                                                                   => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                    ( ~ ( subset @ X1 @ X2 )
                                                                                                                                   => ( X1 != X2 ) )
                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                                     => ( ~ ( in @ X3 @ X2 )
                                                                                                                                       => ( X1 != X2 ) ) )
                                                                                                                                 => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                                         => ( ( subset @ X2 @ X3 )
                                                                                                                                           => ( subset @ X1 @ X3 ) ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                              ( ( subset @ X1 @ X3 )
                                                                                                                                             => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                                                               => ( in @ X1 @ ( powerset @ X2 ) ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                                                                 => ( ( subset @ X2 @ X1 )
                                                                                                                                                   => ( X1 = X2 ) ) )
                                                                                                                                             => ( ! [X1: $i] :
                                                                                                                                                    ( ( subset @ X1 @ emptyset )
                                                                                                                                                   => ( X1 = emptyset ) )
                                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                                      ( ( subset @ X2 @ X1 )
                                                                                                                                                     => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                                        ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                       => ( subset @ X2 @ X1 ) )
                                                                                                                                                   => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                                                                           => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                       => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                         => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                                                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                             => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                      ( ( in @ X3 @ X2 )
                                                                                                                                                                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                        ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                       => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                           => X4 )
                                                                                                                                                                         => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                             => X4 )
                                                                                                                                                                           => X4 ) ) )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                         => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                           => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                                                                               => ( ( in @ X3 @ X2 )
                                                                                                                                                                                 => ( in @ X3 @ ( binintersect @ X1 @ X2 ) ) ) )
                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                  ( ( subset @ X3 @ X1 )
                                                                                                                                                                                 => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                   => ( subset @ X3 @ ( binintersect @ X1 @ X2 ) ) ) )
                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                    ( ( in @ X3 @ ( binintersect @ X1 @ X2 ) )
                                                                                                                                                                                   => ( in @ X3 @ X1 ) )
                                                                                                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ ( binintersect @ X1 @ X2 ) @ X1 )
                                                                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                                                                                       => ( ( binintersect @ X1 @ X2 )
                                                                                                                                                                                          = X1 ) )
                                                                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                          ( ( ( binintersect @ X1 @ X2 )
                                                                                                                                                                                            = X2 )
                                                                                                                                                                                         => ( subset @ X2 @ X1 ) )
                                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                            ( ( in @ X3 @ ( binintersect @ X1 @ X2 ) )
                                                                                                                                                                                           => ( in @ X3 @ X2 ) )
                                                                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                              ( ! [X3: $i] :
                                                                                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                                                                                 => ~ ( in @ X3 @ X2 ) )
                                                                                                                                                                                             => ( ( binintersect @ X1 @ X2 )
                                                                                                                                                                                                = emptyset ) )
                                                                                                                                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ ( binintersect @ X1 @ X2 ) @ X2 )
                                                                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                  ( ( subset @ X2 @ X1 )
                                                                                                                                                                                                 => ( ( binintersect @ X1 @ X2 )
                                                                                                                                                                                                    = X2 ) )
                                                                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                    ( ( ( binintersect @ X1 @ X2 )
                                                                                                                                                                                                      = X1 )
                                                                                                                                                                                                   => ( subset @ X1 @ X2 ) )
                                                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                      ( ( binintersect @ X1 @ ( binunion @ X2 @ X3 ) )
                                                                                                                                                                                                      = ( binunion @ ( binintersect @ X1 @ X2 ) @ ( binintersect @ X1 @ X3 ) ) )
                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                                                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                                                         => ( in @ X3 @ ( setminus @ X1 @ X2 ) ) ) )
                                                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                          ( ( in @ X3 @ ( setminus @ X1 @ X2 ) )
                                                                                                                                                                                                         => ( in @ X3 @ X1 ) )
                                                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                            ( ( in @ X3 @ ( setminus @ X1 @ X2 ) )
                                                                                                                                                                                                           => ~ ( in @ X3 @ X2 ) )
                                                                                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                                                                                                                             => ( ( setminus @ X1 @ X2 )
                                                                                                                                                                                                                = emptyset ) )
                                                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                ( ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) )
                                                                                                                                                                                                               => ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                 => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                  ( ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) )
                                                                                                                                                                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                                                                   => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                    ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                                                   => ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) ) )
                                                                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                      ( ( in @ X3 @ X2 )
                                                                                                                                                                                                                     => ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) ) )
                                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ ( setminus @ X1 @ X2 ) @ X1 )
                                                                                                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                                          ( ( ( setminus @ X1 @ X2 )
                                                                                                                                                                                                                            = emptyset )
                                                                                                                                                                                                                         => ( subset @ X1 @ X2 ) )
                                                                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                            ( ( in @ X3 @ ( symdiff @ X1 @ X2 ) )
                                                                                                                                                                                                                           => ! [X4: $o] :
                                                                                                                                                                                                                                ( ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                                                                                   => X4 ) )
                                                                                                                                                                                                                               => ( ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                                                                   => ( ( in @ X3 @ X2 )
                                                                                                                                                                                                                                     => X4 ) )
                                                                                                                                                                                                                                 => X4 ) ) )
                                                                                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                             => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                                                                               => ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                                                                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                                ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                                                               => ( ( in @ X3 @ X2 )
                                                                                                                                                                                                                                 => ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                                                                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                                 => ( ( in @ X3 @ X2 )
                                                                                                                                                                                                                                   => ~ ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                                                                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                                    ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                                                                                     => ~ ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                                                                                                                                                                                                                               => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setunion @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) ) )
                                                                                                                                                                                                                                   => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setunion @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) ) )
                                                                                                                                                                                                                                     => ( ! [X1: $i,X2: $i] : ( iskpair @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) )
                                                                                                                                                                                                                                       => ( ! [X1: $i,X2: $i] : ( iskpair @ ( kpair @ X1 @ X2 ) )
                                                                                                                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                                                                ( ( in @ X2 @ X1 )
                                                                                                                                                                                                                                               => ( subset @ ( setadjoin @ X2 @ emptyset ) @ X1 ) )
                                                                                                                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                                                                  ( ( in @ X2 @ X1 )
                                                                                                                                                                                                                                                 => ( in @ ( setadjoin @ X2 @ emptyset ) @ ( powerset @ X1 ) ) )
                                                                                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                                                   => ( in @ ( setadjoin @ X3 @ emptyset ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) )
                                                                                                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                                                      ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                                                                                                     => ( ( X3 != X1 )
                                                                                                                                                                                                                                                       => ( X3 = X2 ) ) )
                                                                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                                                       => ! [X4: $i] :
                                                                                                                                                                                                                                                            ( ( in @ X4 @ X2 )
                                                                                                                                                                                                                                                           => ( subset @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ ( binunion @ X1 @ X2 ) ) ) )
                                                                                                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                                                         => ! [X4: $i] :
                                                                                                                                                                                                                                                              ( ( in @ X4 @ X2 )
                                                                                                                                                                                                                                                             => ( in @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) )
                                                                                                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                                                           => ! [X4: $i] :
                                                                                                                                                                                                                                                                ( ( in @ X4 @ X2 )
                                                                                                                                                                                                                                                               => ( subset @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) )
                                                                                                                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                                                             => ! [X4: $i] :
                                                                                                                                                                                                                                                                  ( ( in @ X4 @ X2 )
                                                                                                                                                                                                                                                                 => ( in @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
                                                                                                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                                                               => ! [X4: $i] :
                                                                                                                                                                                                                                                                    ( ( in @ X4 @ X2 )
                                                                                                                                                                                                                                                                   => ( in @ ( kpair @ X3 @ X4 ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
                                                                                                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                                                                 => ! [X4: $i] :
                                                                                                                                                                                                                                                                      ( ( in @ X4 @ X2 )
                                                                                                                                                                                                                                                                     => ( in @ ( kpair @ X3 @ X4 ) @ ( cartprod @ X1 @ X2 ) ) ) )
                                                                                                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                                                                    ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                                                                                                                                                                                                                                                                   => ~ ! [X4: $i] :
                                                                                                                                                                                                                                                                          ( ( in @ X4 @ X1 )
                                                                                                                                                                                                                                                                         => ! [X5: $i] :
                                                                                                                                                                                                                                                                              ( ( in @ X5 @ X2 )
                                                                                                                                                                                                                                                                             => ( X3
                                                                                                                                                                                                                                                                               != ( kpair @ X4 @ X5 ) ) ) ) )
                                                                                                                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                                                                      ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                                                                                                                                                                                                                                                                     => ( iskpair @ X3 ) )
                                                                                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                                                                                        ( ( in @ X2 @ ( setunion @ X1 ) )
                                                                                                                                                                                                                                                                       => ~ ! [X3: $i] :
                                                                                                                                                                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                                                                             => ~ ( in @ X2 @ X3 ) ) )
                                                                                                                                                                                                                                                                   => ( ! [X1: $i] : ( subset @ ( setunion @ ( setadjoin @ X1 @ emptyset ) ) @ X1 )
                                                                                                                                                                                                                                                                     => ( ! [X1: $i] : ( subset @ X1 @ ( setunion @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                                                                                                                                                                                                                       => ( ! [X1: $i] :
                                                                                                                                                                                                                                                                              ( ( setunion @ ( setadjoin @ X1 @ emptyset ) )
                                                                                                                                                                                                                                                                              = X1 )
                                                                                                                                                                                                                                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                                                                                                                                                                                ( ! [X3: $i] :
                                                                                                                                                                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                                                                                   => ! [X4: $i] :
                                                                                                                                                                                                                                                                                        ( ( in @ X4 @ X1 )
                                                                                                                                                                                                                                                                                       => ( ( X2 @ X3 )
                                                                                                                                                                                                                                                                                         => ( ( X2 @ X4 )
                                                                                                                                                                                                                                                                                           => ( X3 = X4 ) ) ) ) )
                                                                                                                                                                                                                                                                               => ( ~ ! [X3: $i] :
                                                                                                                                                                                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                                                                                       => ~ ( X2 @ X3 ) )
                                                                                                                                                                                                                                                                                 => ( singleton @ ( dsetconstr @ X1 @ X2 ) ) ) )
                                                                                                                                                                                                                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                                                                                                                                                                                  ( ( ex1 @ X1 @ X2 )
                                                                                                                                                                                                                                                                                 => ~ ! [X3: $i] :
                                                                                                                                                                                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                                                                                       => ~ ( X2 @ X3 ) ) )
                                                                                                                                                                                                                                                                             => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                                                                                                                                                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                                                                                   => ( ( X2 @ X3 )
                                                                                                                                                                                                                                                                                     => ( ! [X4: $i] :
                                                                                                                                                                                                                                                                                            ( ( in @ X4 @ X1 )
                                                                                                                                                                                                                                                                                           => ( ( X2 @ X4 )
                                                                                                                                                                                                                                                                                             => ( X4 = X3 ) ) )
                                                                                                                                                                                                                                                                                       => ( ex1 @ X1 @ X2 ) ) ) )
                                                                                                                                                                                                                                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                                                                                                                                                                                      ( ! [X3: $i] :
                                                                                                                                                                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                                                                                         => ! [X4: $i] :
                                                                                                                                                                                                                                                                                              ( ( in @ X4 @ X1 )
                                                                                                                                                                                                                                                                                             => ( ( X2 @ X3 )
                                                                                                                                                                                                                                                                                               => ( ( X2 @ X4 )
                                                                                                                                                                                                                                                                                                 => ( X3 = X4 ) ) ) ) )
                                                                                                                                                                                                                                                                                     => ( ~ ! [X3: $i] :
                                                                                                                                                                                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                                                                                             => ~ ( X2 @ X3 ) )
                                                                                                                                                                                                                                                                                       => ( ex1 @ X1 @ X2 ) ) )
                                                                                                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                                                                                                        ( ( ( setadjoin @ X1 @ emptyset )
                                                                                                                                                                                                                                                                                          = ( setadjoin @ X2 @ emptyset ) )
                                                                                                                                                                                                                                                                                       => ( X1 = X2 ) )
                                                                                                                                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                                                                                          ( ( in @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) )
                                                                                                                                                                                                                                                                                         => ( X1 = X3 ) )
                                                                                                                                                                                                                                                                                     => ( ! [X1: $i] :
                                                                                                                                                                                                                                                                                            ( ( iskpair @ X1 )
                                                                                                                                                                                                                                                                                           => ( singleton
                                                                                                                                                                                                                                                                                              @ ( dsetconstr @ ( setunion @ X1 )
                                                                                                                                                                                                                                                                                                @ ^ [X2: $i] : ( in @ ( setadjoin @ X2 @ emptyset ) @ X1 ) ) ) )
                                                                                                                                                                                                                                                                                       => ( ! [X1: $i] :
                                                                                                                                                                                                                                                                                              ( ( singleton @ X1 )
                                                                                                                                                                                                                                                                                             => ( in @ ( setunion @ X1 ) @ X1 ) )
                                                                                                                                                                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                                                                                                                ( ( kfst @ ( kpair @ X1 @ X2 ) )
                                                                                                                                                                                                                                                                                                = X1 )
                                                                                                                                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                                                                                                  ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                                                                                                                                                                                                                                                                                                 => ( in @ ( kfst @ X3 ) @ X1 ) )
                                                                                                                                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
                                                                                                                                                                                                                                                                                                    ( ( ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) )
                                                                                                                                                                                                                                                                                                      = ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) )
                                                                                                                                                                                                                                                                                                   => ( X1 = X3 ) )
                                                                                                                                                                                                                                                                                               => sP1 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP2])]) ).

thf(sP3,plain,
    ( sP3
  <=> ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
           => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
             => ( ( X3 != X1 )
               => ( X3 = X2 ) ) )
         => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
           => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
             => ( ! [X1: $i,X2: $i > $o] :
                    ( ~ ! [X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ~ ( X2 @ X3 ) )
                   => ( ( dsetconstr @ X1 @ X2 )
                     != emptyset ) )
               => ( ! [X1: $i > $o,X2: $i] :
                      ( ( in @ X2 @ emptyset )
                     => ( X1 @ X2 ) )
                 => ( ! [X1: $i,X2: $i > $o] :
                        ( ~ ! [X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ( X2 @ X3 ) )
                       => ~ ! [X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ( X2 @ X3 ) ) )
                   => ( ! [X1: $i,X2: $i > $o] :
                          ( ! [X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ~ ( X2 @ X3 ) )
                         => ! [X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ~ ( X2 @ X3 ) ) )
                     => ( ! [X1: $i,X2: $i > $o] :
                            ( ! [X3: $i] :
                                ( ( in @ X3 @ X1 )
                               => ~ ( X2 @ X3 ) )
                           => ! [X3: $i] :
                                ( ( in @ X3 @ X1 )
                               => ~ ( X2 @ X3 ) ) )
                       => ( ! [X1: $i,X2: $i > $o] :
                              ( ~ ! [X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ( X2 @ X3 ) )
                             => ~ ! [X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ( X2 @ X3 ) ) )
                         => ( ! [X1: $o] :
                                ( X1
                               => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                           => ( ! [X1: $o] :
                                  ( X1
                                 => ( set2prop @ ( prop2set @ X1 ) ) )
                             => ( ! [X1: $i,X2: $i > $o] :
                                    ( ! [X3: $i] :
                                        ( ( in @ X3 @ X1 )
                                       => ~ ( X2 @ X3 ) )
                                   => ! [X3: $i] :
                                        ( ( in @ X3 @ X1 )
                                       => ~ ( X2 @ X3 ) ) )
                               => ( ! [X1: $i,X2: $i > $o] :
                                      ( ~ ! [X3: $i] :
                                            ( ( in @ X3 @ X1 )
                                           => ( X2 @ X3 ) )
                                     => ~ ! [X3: $i] :
                                            ( ( in @ X3 @ X1 )
                                           => ( X2 @ X3 ) ) )
                                 => ( ! [X1: $i > $o] :
                                        ( ~ ! [X2: $i] :
                                              ( ( X1 @ X2 )
                                             => ~ ! [X3: $i] :
                                                    ( ( X1 @ X3 )
                                                   => ( X2 = X3 ) ) )
                                       => ( exu @ X1 ) )
                                   => ( ! [X1: $i > $o] :
                                          ( ~ ! [X2: $i] :
                                                ~ ( X1 @ X2 )
                                         => ( ! [X2: $i,X3: $i] :
                                                ( ( X1 @ X2 )
                                               => ( ( X1 @ X3 )
                                                 => ( X2 = X3 ) ) )
                                           => ( exu @ X1 ) ) )
                                     => ( ! [X1: $i > $o] :
                                            ( ~ ! [X2: $i] :
                                                  ~ ! [X3: $i] :
                                                      ( ( X1 @ X3 )
                                                      = ( X3 = X2 ) )
                                           => ( exu @ X1 ) )
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ( X1 = X2 )
                                             => ! [X3: $i,X4: $i] :
                                                  ( ( X3 = X4 )
                                                 => ( ( in @ X3 @ X1 )
                                                   => ( in @ X4 @ X2 ) ) ) )
                                         => ( ! [X1: $i,X2: $i] :
                                                ( ( X1 = X2 )
                                               => ! [X3: $i,X4: $i] :
                                                    ( ( X3 = X4 )
                                                   => ( ( in @ X3 @ X1 )
                                                      = ( in @ X4 @ X2 ) ) ) )
                                           => ( ! [X1: $i > $o] :
                                                  ( ( exu @ X1 )
                                                 => ! [X2: $i,X3: $i] :
                                                      ( ( X1 @ X2 )
                                                     => ( ( X1 @ X3 )
                                                       => ( X2 = X3 ) ) ) )
                                             => ( ! [X1: $i > $o,X2: $i > $o] :
                                                    ( ! [X3: $i,X4: $i] :
                                                        ( ( X3 = X4 )
                                                       => ( ( X1 @ X3 )
                                                          = ( X2 @ X4 ) ) )
                                                   => ( ( exu @ X1 )
                                                      = ( exu @ X2 ) ) )
                                               => ( ( emptyset = emptyset )
                                                 => ( ! [X1: $i,X2: $i] :
                                                        ( ( X1 = X2 )
                                                       => ! [X3: $i,X4: $i] :
                                                            ( ( X3 = X4 )
                                                           => ( ( setadjoin @ X1 @ X3 )
                                                              = ( setadjoin @ X2 @ X4 ) ) ) )
                                                   => ( ! [X1: $i,X2: $i] :
                                                          ( ( X1 = X2 )
                                                         => ( ( powerset @ X1 )
                                                            = ( powerset @ X2 ) ) )
                                                     => ( ! [X1: $i,X2: $i] :
                                                            ( ( X1 = X2 )
                                                           => ( ( setunion @ X1 )
                                                              = ( setunion @ X2 ) ) )
                                                       => ( ( omega = omega )
                                                         => ( ! [X1: $i > $o] :
                                                                ( ( exu @ X1 )
                                                               => ! [X2: $i,X3: $i] :
                                                                    ( ( X1 @ X2 )
                                                                   => ( ( X1 @ X3 )
                                                                     => ( X2 = X3 ) ) ) )
                                                           => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                  ( ! [X3: $i,X4: $i] :
                                                                      ( ( X3 = X4 )
                                                                     => ( ( X1 @ X3 )
                                                                        = ( X2 @ X4 ) ) )
                                                                 => ( ( exu @ X1 )
                                                                   => ( ( exu @ X2 )
                                                                     => ( ( descr @ X1 )
                                                                        = ( descr @ X2 ) ) ) ) )
                                                             => ( ! [X1: $i,X2: $i] :
                                                                    ( ( X1 = X2 )
                                                                   => ! [X3: $i > $o,X4: $i > $o] :
                                                                        ( ! [X5: $i] :
                                                                            ( ( in @ X5 @ X1 )
                                                                           => ! [X6: $i] :
                                                                                ( ( in @ X6 @ X2 )
                                                                               => ( ( X5 = X6 )
                                                                                 => ( ( X3 @ X5 )
                                                                                    = ( X4 @ X6 ) ) ) ) )
                                                                       => ( ( dsetconstr @ X1 @ X3 )
                                                                          = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                               => ( ! [X1: $i,X2: $i] :
                                                                      ( ! [X3: $i] :
                                                                          ( ( in @ X3 @ X1 )
                                                                         => ( in @ X3 @ X2 ) )
                                                                     => ( subset @ X1 @ X2 ) )
                                                                 => ( ! [X1: $i,X2: $i] :
                                                                        ( ( X1 = X2 )
                                                                       => ( subset @ X2 @ X1 ) )
                                                                   => ( ! [X1: $i,X2: $i] :
                                                                          ( ( X1 = X2 )
                                                                         => ( subset @ X1 @ X2 ) )
                                                                     => ( ! [X1: $i,X2: $i] :
                                                                            ( ! [X3: $i] :
                                                                                ( ( in @ X3 @ X1 )
                                                                               => ( in @ X3 @ X2 ) )
                                                                           => ( subset @ X1 @ X2 ) )
                                                                       => ( ( !! @ ( subset @ emptyset ) )
                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                ( ( subset @ X1 @ X2 )
                                                                               => ( ( in @ X3 @ X1 )
                                                                                 => ( in @ X3 @ X2 ) ) )
                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                  ( ( subset @ X1 @ X2 )
                                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                                   => ~ ( in @ X3 @ X1 ) ) )
                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                    ( ( in @ X3 @ X1 )
                                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                                     => ~ ( subset @ X1 @ X2 ) ) )
                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                      ( ~ ( subset @ X1 @ X2 )
                                                                                     => ( X1 != X2 ) )
                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                        ( ( in @ X3 @ X1 )
                                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                                         => ( X1 != X2 ) ) )
                                                                                   => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                            ( ( subset @ X1 @ X2 )
                                                                                           => ( ( subset @ X2 @ X3 )
                                                                                             => ( subset @ X1 @ X3 ) ) )
                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                ( ( subset @ X1 @ X3 )
                                                                                               => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                 => ( in @ X1 @ ( powerset @ X2 ) ) )
                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                   => ( ( subset @ X2 @ X1 )
                                                                                                     => ( X1 = X2 ) ) )
                                                                                               => ( ! [X1: $i] :
                                                                                                      ( ( subset @ X1 @ emptyset )
                                                                                                     => ( X1 = emptyset ) )
                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                        ( ( subset @ X2 @ X1 )
                                                                                                       => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                          ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                         => ( subset @ X2 @ X1 ) )
                                                                                                     => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                             => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                         => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                           => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                   => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                               => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                        ( ( in @ X3 @ X2 )
                                                                                                                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                         => ( ( ( in @ X3 @ X1 )
                                                                                                                             => X4 )
                                                                                                                           => ( ( ( in @ X3 @ X2 )
                                                                                                                               => X4 )
                                                                                                                             => X4 ) ) )
                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                           => ( ~ ( in @ X3 @ X1 )
                                                                                                                             => ( in @ X3 @ X2 ) ) )
                                                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                 => ( ( in @ X3 @ X2 )
                                                                                                                                   => ( in @ X3 @ ( binintersect @ X1 @ X2 ) ) ) )
                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                    ( ( subset @ X3 @ X1 )
                                                                                                                                   => ( ( subset @ X3 @ X2 )
                                                                                                                                     => ( subset @ X3 @ ( binintersect @ X1 @ X2 ) ) ) )
                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                      ( ( in @ X3 @ ( binintersect @ X1 @ X2 ) )
                                                                                                                                     => ( in @ X3 @ X1 ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ ( binintersect @ X1 @ X2 ) @ X1 )
                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                                         => ( ( binintersect @ X1 @ X2 )
                                                                                                                                            = X1 ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                            ( ( ( binintersect @ X1 @ X2 )
                                                                                                                                              = X2 )
                                                                                                                                           => ( subset @ X2 @ X1 ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                              ( ( in @ X3 @ ( binintersect @ X1 @ X2 ) )
                                                                                                                                             => ( in @ X3 @ X2 ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                ( ! [X3: $i] :
                                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                                   => ~ ( in @ X3 @ X2 ) )
                                                                                                                                               => ( ( binintersect @ X1 @ X2 )
                                                                                                                                                  = emptyset ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ ( binintersect @ X1 @ X2 ) @ X2 )
                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                    ( ( subset @ X2 @ X1 )
                                                                                                                                                   => ( ( binintersect @ X1 @ X2 )
                                                                                                                                                      = X2 ) )
                                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                                      ( ( ( binintersect @ X1 @ X2 )
                                                                                                                                                        = X1 )
                                                                                                                                                     => ( subset @ X1 @ X2 ) )
                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                        ( ( binintersect @ X1 @ ( binunion @ X2 @ X3 ) )
                                                                                                                                                        = ( binunion @ ( binintersect @ X1 @ X2 ) @ ( binintersect @ X1 @ X3 ) ) )
                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                                         => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                           => ( in @ X3 @ ( setminus @ X1 @ X2 ) ) ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                            ( ( in @ X3 @ ( setminus @ X1 @ X2 ) )
                                                                                                                                                           => ( in @ X3 @ X1 ) )
                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                              ( ( in @ X3 @ ( setminus @ X1 @ X2 ) )
                                                                                                                                                             => ~ ( in @ X3 @ X2 ) )
                                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                                                                               => ( ( setminus @ X1 @ X2 )
                                                                                                                                                                  = emptyset ) )
                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                  ( ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) )
                                                                                                                                                                 => ( ( in @ X3 @ X1 )
                                                                                                                                                                   => ( in @ X3 @ X2 ) ) )
                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                    ( ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) )
                                                                                                                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                     => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                      ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                     => ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) ) )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                        ( ( in @ X3 @ X2 )
                                                                                                                                                                       => ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) ) )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ ( setminus @ X1 @ X2 ) @ X1 )
                                                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                            ( ( ( setminus @ X1 @ X2 )
                                                                                                                                                                              = emptyset )
                                                                                                                                                                           => ( subset @ X1 @ X2 ) )
                                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                              ( ( in @ X3 @ ( symdiff @ X1 @ X2 ) )
                                                                                                                                                                             => ! [X4: $o] :
                                                                                                                                                                                  ( ( ( in @ X3 @ X1 )
                                                                                                                                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                                     => X4 ) )
                                                                                                                                                                                 => ( ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                     => ( ( in @ X3 @ X2 )
                                                                                                                                                                                       => X4 ) )
                                                                                                                                                                                   => X4 ) ) )
                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                                                                               => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                                 => ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                  ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                 => ( ( in @ X3 @ X2 )
                                                                                                                                                                                   => ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                                                                   => ( ( in @ X3 @ X2 )
                                                                                                                                                                                     => ~ ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                      ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                     => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                                       => ~ ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                                                                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                                   => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setunion @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) ) )
                                                                                                                                                                                     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setunion @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) ) )
                                                                                                                                                                                       => ( ! [X1: $i,X2: $i] : ( iskpair @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) )
                                                                                                                                                                                         => ( ! [X1: $i,X2: $i] : ( iskpair @ ( kpair @ X1 @ X2 ) )
                                                                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                  ( ( in @ X2 @ X1 )
                                                                                                                                                                                                 => ( subset @ ( setadjoin @ X2 @ emptyset ) @ X1 ) )
                                                                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                    ( ( in @ X2 @ X1 )
                                                                                                                                                                                                   => ( in @ ( setadjoin @ X2 @ emptyset ) @ ( powerset @ X1 ) ) )
                                                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                                                                                                     => ( in @ ( setadjoin @ X3 @ emptyset ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) )
                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                        ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                                                       => ( ( X3 != X1 )
                                                                                                                                                                                                         => ( X3 = X2 ) ) )
                                                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                                                                                         => ! [X4: $i] :
                                                                                                                                                                                                              ( ( in @ X4 @ X2 )
                                                                                                                                                                                                             => ( subset @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ ( binunion @ X1 @ X2 ) ) ) )
                                                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                                                                                           => ! [X4: $i] :
                                                                                                                                                                                                                ( ( in @ X4 @ X2 )
                                                                                                                                                                                                               => ( in @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) )
                                                                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                                                                                                             => ! [X4: $i] :
                                                                                                                                                                                                                  ( ( in @ X4 @ X2 )
                                                                                                                                                                                                                 => ( subset @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) )
                                                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                                                                                                               => ! [X4: $i] :
                                                                                                                                                                                                                    ( ( in @ X4 @ X2 )
                                                                                                                                                                                                                   => ( in @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
                                                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                 => ! [X4: $i] :
                                                                                                                                                                                                                      ( ( in @ X4 @ X2 )
                                                                                                                                                                                                                     => ( in @ ( kpair @ X3 @ X4 ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
                                                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                   => ! [X4: $i] :
                                                                                                                                                                                                                        ( ( in @ X4 @ X2 )
                                                                                                                                                                                                                       => ( in @ ( kpair @ X3 @ X4 ) @ ( cartprod @ X1 @ X2 ) ) ) )
                                                                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                      ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                                                                                                                                                                                                                     => ~ ! [X4: $i] :
                                                                                                                                                                                                                            ( ( in @ X4 @ X1 )
                                                                                                                                                                                                                           => ! [X5: $i] :
                                                                                                                                                                                                                                ( ( in @ X5 @ X2 )
                                                                                                                                                                                                                               => ( X3
                                                                                                                                                                                                                                 != ( kpair @ X4 @ X5 ) ) ) ) )
                                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                        ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                                                                                                                                                                                                                       => ( iskpair @ X3 ) )
                                                                                                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                                          ( ( in @ X2 @ ( setunion @ X1 ) )
                                                                                                                                                                                                                         => ~ ! [X3: $i] :
                                                                                                                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                               => ~ ( in @ X2 @ X3 ) ) )
                                                                                                                                                                                                                     => ( ! [X1: $i] : ( subset @ ( setunion @ ( setadjoin @ X1 @ emptyset ) ) @ X1 )
                                                                                                                                                                                                                       => ( ! [X1: $i] : ( subset @ X1 @ ( setunion @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                                                                                                                                                                         => ( ! [X1: $i] :
                                                                                                                                                                                                                                ( ( setunion @ ( setadjoin @ X1 @ emptyset ) )
                                                                                                                                                                                                                                = X1 )
                                                                                                                                                                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                                                                                                                                  ( ! [X3: $i] :
                                                                                                                                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                                     => ! [X4: $i] :
                                                                                                                                                                                                                                          ( ( in @ X4 @ X1 )
                                                                                                                                                                                                                                         => ( ( X2 @ X3 )
                                                                                                                                                                                                                                           => ( ( X2 @ X4 )
                                                                                                                                                                                                                                             => ( X3 = X4 ) ) ) ) )
                                                                                                                                                                                                                                 => ( ~ ! [X3: $i] :
                                                                                                                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                                         => ~ ( X2 @ X3 ) )
                                                                                                                                                                                                                                   => ( singleton @ ( dsetconstr @ X1 @ X2 ) ) ) )
                                                                                                                                                                                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                                                                                                                                    ( ( ex1 @ X1 @ X2 )
                                                                                                                                                                                                                                   => ~ ! [X3: $i] :
                                                                                                                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                                         => ~ ( X2 @ X3 ) ) )
                                                                                                                                                                                                                               => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                                                                                                                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                                     => ( ( X2 @ X3 )
                                                                                                                                                                                                                                       => ( ! [X4: $i] :
                                                                                                                                                                                                                                              ( ( in @ X4 @ X1 )
                                                                                                                                                                                                                                             => ( ( X2 @ X4 )
                                                                                                                                                                                                                                               => ( X4 = X3 ) ) )
                                                                                                                                                                                                                                         => ( ex1 @ X1 @ X2 ) ) ) )
                                                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                                                                                                                                        ( ! [X3: $i] :
                                                                                                                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                                           => ! [X4: $i] :
                                                                                                                                                                                                                                                ( ( in @ X4 @ X1 )
                                                                                                                                                                                                                                               => ( ( X2 @ X3 )
                                                                                                                                                                                                                                                 => ( ( X2 @ X4 )
                                                                                                                                                                                                                                                   => ( X3 = X4 ) ) ) ) )
                                                                                                                                                                                                                                       => ( ~ ! [X3: $i] :
                                                                                                                                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                                               => ~ ( X2 @ X3 ) )
                                                                                                                                                                                                                                         => ( ex1 @ X1 @ X2 ) ) )
                                                                                                                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                                                          ( ( ( setadjoin @ X1 @ emptyset )
                                                                                                                                                                                                                                            = ( setadjoin @ X2 @ emptyset ) )
                                                                                                                                                                                                                                         => ( X1 = X2 ) )
                                                                                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                                            ( ( in @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) )
                                                                                                                                                                                                                                           => ( X1 = X3 ) )
                                                                                                                                                                                                                                       => ( ! [X1: $i] :
                                                                                                                                                                                                                                              ( ( iskpair @ X1 )
                                                                                                                                                                                                                                             => ( singleton
                                                                                                                                                                                                                                                @ ( dsetconstr @ ( setunion @ X1 )
                                                                                                                                                                                                                                                  @ ^ [X2: $i] : ( in @ ( setadjoin @ X2 @ emptyset ) @ X1 ) ) ) )
                                                                                                                                                                                                                                         => ( ! [X1: $i] :
                                                                                                                                                                                                                                                ( ( singleton @ X1 )
                                                                                                                                                                                                                                               => ( in @ ( setunion @ X1 ) @ X1 ) )
                                                                                                                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                                                                  ( ( kfst @ ( kpair @ X1 @ X2 ) )
                                                                                                                                                                                                                                                  = X1 )
                                                                                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                                                    ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                                                                                                                                                                                                                                                   => ( in @ ( kfst @ X3 ) @ X1 ) )
                                                                                                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
                                                                                                                                                                                                                                                      ( ( ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) )
                                                                                                                                                                                                                                                        = ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) )
                                                                                                                                                                                                                                                     => ( X1 = X3 ) )
                                                                                                                                                                                                                                                 => sP1 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP3])]) ).

thf(sP4,plain,
    ( sP4
  <=> ( ! [X1: $i] :
          ( ( iskpair @ X1 )
         => ( singleton
            @ ( dsetconstr @ ( setunion @ X1 )
              @ ^ [X2: $i] :
                  ( X1
                  = ( kpair @ ( kfst @ X1 ) @ X2 ) ) ) ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( ksnd @ ( kpair @ X1 @ X2 ) )
            = X2 )
       => ( ! [X1: $i] :
              ( ( iskpair @ X1 )
             => ( ( kpair @ ( kfst @ X1 ) @ ( ksnd @ X1 ) )
                = X1 ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
               => ( in @ ( ksnd @ X3 ) @ X2 ) )
           => ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
                  ( ( in @ ( kpair @ X3 @ X4 ) @ ( cartprod @ X1 @ X2 ) )
                 => ( in @ X3 @ X1 ) )
             => ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
                    ( ( in @ ( kpair @ X3 @ X4 ) @ ( cartprod @ X1 @ X2 ) )
                   => ( in @ X4 @ X2 ) )
               => ( ! [X1: $i,X2: $i,X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ! [X4: $i] :
                          ( ( in @ X4 @ X2 )
                         => ( ( kpair @ X3 @ X4 )
                            = ( kpair @ X3 @ X4 ) ) ) )
                 => ( ! [X1: $i,X2: $i,X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ! [X4: $i] :
                            ( ( in @ X4 @ X2 )
                           => ( ( kfst @ ( kpair @ X3 @ X4 ) )
                              = X3 ) ) )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ! [X4: $i] :
                              ( ( in @ X4 @ X2 )
                             => ( ( ksnd @ ( kpair @ X3 @ X4 ) )
                                = X4 ) ) )
                     => ( ! [X1: $i,X2: $i,X3: $i] :
                            ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                           => ( ( kpair @ ( kfst @ X3 ) @ ( ksnd @ X3 ) )
                              = X3 ) )
                       => ( ! [X1: $i,X2: $i,X3: $i > $i > $o,X4: $i] :
                              ( ( in @ X4 @ X1 )
                             => ! [X5: $i] :
                                  ( ( in @ X5 @ X2 )
                                 => ( ( X3 @ X4 @ X5 )
                                   => ( in @ ( kpair @ X4 @ X5 ) @ ( dpsetconstr @ X1 @ X2 @ X3 ) ) ) ) )
                         => ( ! [X1: $i,X2: $i,X3: $i > $i > $o] : ( subset @ ( dpsetconstr @ X1 @ X2 @ X3 ) @ ( cartprod @ X1 @ X2 ) )
                           => ( ! [X1: $i,X2: $i,X3: $i > $i > $o] : ( breln @ X1 @ X2 @ ( dpsetconstr @ X1 @ X2 @ X3 ) )
                             => ( ! [X1: $i,X2: $i,X3: $i > $i > $o,X4: $i] :
                                    ( ( in @ X4 @ X1 )
                                   => ! [X5: $i] :
                                        ( ( in @ X5 @ X2 )
                                       => ( ( in @ ( kpair @ X4 @ X5 ) @ ( dpsetconstr @ X1 @ X2 @ X3 ) )
                                         => ( X3 @ X4 @ X5 ) ) ) )
                               => ( ! [X1: $i,X2: $i,X3: $i > $i > $o,X4: $i,X5: $i] :
                                      ( ( in @ ( kpair @ X4 @ X5 ) @ ( dpsetconstr @ X1 @ X2 @ X3 ) )
                                     => ( in @ X4 @ X1 ) )
                                 => ( ! [X1: $i,X2: $i,X3: $i > $i > $o,X4: $i,X5: $i] :
                                        ( ( in @ ( kpair @ X4 @ X5 ) @ ( dpsetconstr @ X1 @ X2 @ X3 ) )
                                       => ( in @ X5 @ X2 ) )
                                   => ( ! [X1: $i,X2: $i,X3: $i > $i > $o,X4: $i,X5: $i] :
                                          ( ( in @ ( kpair @ X4 @ X5 ) @ ( dpsetconstr @ X1 @ X2 @ X3 ) )
                                         => ( X3 @ X4 @ X5 ) )
                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                            ( ~ ( ( breln @ X1 @ X2 @ X3 )
                                               => ~ ! [X4: $i] :
                                                      ( ( in @ X4 @ X1 )
                                                     => ( ex1 @ X2
                                                        @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) ) )
                                           => ! [X4: $i] :
                                                ( ( in @ X4 @ X1 )
                                               => ( singleton
                                                  @ ( dsetconstr @ X2
                                                    @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) ) ) )
                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                              ( ~ ( ( breln @ X1 @ X2 @ X3 )
                                                 => ~ ! [X4: $i] :
                                                        ( ( in @ X4 @ X1 )
                                                       => ( ex1 @ X2
                                                          @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) ) )
                                             => ! [X4: $i] :
                                                  ( ( in @ X4 @ X1 )
                                                 => ( in
                                                    @ ( setunion
                                                      @ ( dsetconstr @ X2
                                                        @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) )
                                                    @ X2 ) ) )
                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                ( ~ ( ( breln @ X1 @ X2 @ X3 )
                                                   => ~ ! [X4: $i] :
                                                          ( ( in @ X4 @ X1 )
                                                         => ( ex1 @ X2
                                                            @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) ) )
                                               => ! [X4: $i] :
                                                    ( ( in @ X4 @ X1 )
                                                   => ( in @ ( ap @ X1 @ X2 @ X3 @ X4 ) @ X2 ) ) )
                                           => ! [X1: $i,X2: $i,X3: $i] :
                                                ( ( in @ X3
                                                  @ ( dsetconstr @ ( powerset @ ( cartprod @ X1 @ X2 ) )
                                                    @ ^ [X4: $i] :
                                                        ~ ( ( breln @ X1 @ X2 @ X4 )
                                                         => ~ ! [X5: $i] :
                                                                ( ( in @ X5 @ X1 )
                                                               => ( ex1 @ X2
                                                                  @ ^ [X6: $i] : ( in @ ( kpair @ X5 @ X6 ) @ X4 ) ) ) ) ) )
                                               => ~ ( ( breln @ X1 @ X2 @ X3 )
                                                   => ~ ! [X4: $i] :
                                                          ( ( in @ X4 @ X1 )
                                                         => ( ex1 @ X2
                                                            @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP4])]) ).

thf(sP5,plain,
    ( sP5
  <=> ( ! [X1: $i,X2: $i > $o,X3: $i] :
          ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
         => ( X2 @ X3 ) )
     => ( ! [X1: $i > $o] :
            ( ( exu @ X1 )
           => ~ ! [X2: $i] :
                  ( ( X1 @ X2 )
                 => ~ ! [X3: $i] :
                        ( ( X1 @ X3 )
                       => ( X2 = X3 ) ) ) )
       => ( ! [X1: $o,X2: $i] :
              ( ( in @ X2 @ ( prop2set @ X1 ) )
             => X1 )
         => ( ! [X1: $i] :
                ( ( in @ X1 @ emptyset )
               => ! [X2: $o] : X2 )
           => ( ! [X1: $i] :
                  ~ ( in @ X1 @ emptyset )
             => ( ! [X1: $i] :
                    ~ ( in @ X1 @ emptyset )
               => ( ! [X1: $i > $o] :
                      ( ( exu @ X1 )
                     => ~ ! [X2: $i] :
                            ~ ( X1 @ X2 ) )
                 => ( ! [X1: $i,X2: $i] :
                        ( ! [X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ( in @ X3 @ X2 ) )
                       => ( ! [X3: $i] :
                              ( ( in @ X3 @ X2 )
                             => ( in @ X3 @ X1 ) )
                         => ( X1 = X2 ) ) )
                   => sP2 ) ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP5])]) ).

thf(sP6,plain,
    ( sP6
  <=> ( ( emptyset = emptyset )
     => ( ! [X1: $i,X2: $i] :
            ( ( X1 = X2 )
           => ! [X3: $i,X4: $i] :
                ( ( X3 = X4 )
               => ( ( setadjoin @ X1 @ X3 )
                  = ( setadjoin @ X2 @ X4 ) ) ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( X1 = X2 )
             => ( ( powerset @ X1 )
                = ( powerset @ X2 ) ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( X1 = X2 )
               => ( ( setunion @ X1 )
                  = ( setunion @ X2 ) ) )
           => ( ( omega = omega )
             => ( ! [X1: $i > $o] :
                    ( ( exu @ X1 )
                   => ! [X2: $i,X3: $i] :
                        ( ( X1 @ X2 )
                       => ( ( X1 @ X3 )
                         => ( X2 = X3 ) ) ) )
               => ( ! [X1: $i > $o,X2: $i > $o] :
                      ( ! [X3: $i,X4: $i] :
                          ( ( X3 = X4 )
                         => ( ( X1 @ X3 )
                            = ( X2 @ X4 ) ) )
                     => ( ( exu @ X1 )
                       => ( ( exu @ X2 )
                         => ( ( descr @ X1 )
                            = ( descr @ X2 ) ) ) ) )
                 => ( ! [X1: $i,X2: $i] :
                        ( ( X1 = X2 )
                       => ! [X3: $i > $o,X4: $i > $o] :
                            ( ! [X5: $i] :
                                ( ( in @ X5 @ X1 )
                               => ! [X6: $i] :
                                    ( ( in @ X6 @ X2 )
                                   => ( ( X5 = X6 )
                                     => ( ( X3 @ X5 )
                                        = ( X4 @ X6 ) ) ) ) )
                           => ( ( dsetconstr @ X1 @ X3 )
                              = ( dsetconstr @ X2 @ X4 ) ) ) )
                   => ( ! [X1: $i,X2: $i] :
                          ( ! [X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ( in @ X3 @ X2 ) )
                         => ( subset @ X1 @ X2 ) )
                     => ( ! [X1: $i,X2: $i] :
                            ( ( X1 = X2 )
                           => ( subset @ X2 @ X1 ) )
                       => ( ! [X1: $i,X2: $i] :
                              ( ( X1 = X2 )
                             => ( subset @ X1 @ X2 ) )
                         => ( ! [X1: $i,X2: $i] :
                                ( ! [X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ( in @ X3 @ X2 ) )
                               => ( subset @ X1 @ X2 ) )
                           => ( ( !! @ ( subset @ emptyset ) )
                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                    ( ( subset @ X1 @ X2 )
                                   => ( ( in @ X3 @ X1 )
                                     => ( in @ X3 @ X2 ) ) )
                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                      ( ( subset @ X1 @ X2 )
                                     => ( ~ ( in @ X3 @ X2 )
                                       => ~ ( in @ X3 @ X1 ) ) )
                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                        ( ( in @ X3 @ X1 )
                                       => ( ~ ( in @ X3 @ X2 )
                                         => ~ ( subset @ X1 @ X2 ) ) )
                                   => ( ! [X1: $i,X2: $i] :
                                          ( ~ ( subset @ X1 @ X2 )
                                         => ( X1 != X2 ) )
                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                            ( ( in @ X3 @ X1 )
                                           => ( ~ ( in @ X3 @ X2 )
                                             => ( X1 != X2 ) ) )
                                       => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                ( ( subset @ X1 @ X2 )
                                               => ( ( subset @ X2 @ X3 )
                                                 => ( subset @ X1 @ X3 ) ) )
                                           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                    ( ( subset @ X1 @ X3 )
                                                   => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                               => ( ! [X1: $i,X2: $i] :
                                                      ( ( subset @ X1 @ X2 )
                                                     => ( in @ X1 @ ( powerset @ X2 ) ) )
                                                 => ( ! [X1: $i,X2: $i] :
                                                        ( ( subset @ X1 @ X2 )
                                                       => ( ( subset @ X2 @ X1 )
                                                         => ( X1 = X2 ) ) )
                                                   => ( ! [X1: $i] :
                                                          ( ( subset @ X1 @ emptyset )
                                                         => ( X1 = emptyset ) )
                                                     => ( ! [X1: $i,X2: $i] :
                                                            ( ( subset @ X2 @ X1 )
                                                           => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                       => ( ! [X1: $i,X2: $i] :
                                                              ( ( in @ X2 @ ( powerset @ X1 ) )
                                                             => ( subset @ X2 @ X1 ) )
                                                         => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                           => ( ! [X1: $i,X2: $i] :
                                                                  ( ( subset @ X1 @ X2 )
                                                                 => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                             => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                               => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                        ( ( in @ X3 @ X1 )
                                                                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                   => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                            ( ( in @ X3 @ X2 )
                                                                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                       => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                             => ( ( ( in @ X3 @ X1 )
                                                                                 => X4 )
                                                                               => ( ( ( in @ X3 @ X2 )
                                                                                   => X4 )
                                                                                 => X4 ) ) )
                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                               => ( ~ ( in @ X3 @ X1 )
                                                                                 => ( in @ X3 @ X2 ) ) )
                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                      ( ( in @ X3 @ X1 )
                                                                                     => ( ( in @ X3 @ X2 )
                                                                                       => ( in @ X3 @ ( binintersect @ X1 @ X2 ) ) ) )
                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                        ( ( subset @ X3 @ X1 )
                                                                                       => ( ( subset @ X3 @ X2 )
                                                                                         => ( subset @ X3 @ ( binintersect @ X1 @ X2 ) ) ) )
                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                          ( ( in @ X3 @ ( binintersect @ X1 @ X2 ) )
                                                                                         => ( in @ X3 @ X1 ) )
                                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ ( binintersect @ X1 @ X2 ) @ X1 )
                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                              ( ( subset @ X1 @ X2 )
                                                                                             => ( ( binintersect @ X1 @ X2 )
                                                                                                = X1 ) )
                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                ( ( ( binintersect @ X1 @ X2 )
                                                                                                  = X2 )
                                                                                               => ( subset @ X2 @ X1 ) )
                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                  ( ( in @ X3 @ ( binintersect @ X1 @ X2 ) )
                                                                                                 => ( in @ X3 @ X2 ) )
                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                    ( ! [X3: $i] :
                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                       => ~ ( in @ X3 @ X2 ) )
                                                                                                   => ( ( binintersect @ X1 @ X2 )
                                                                                                      = emptyset ) )
                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ ( binintersect @ X1 @ X2 ) @ X2 )
                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                        ( ( subset @ X2 @ X1 )
                                                                                                       => ( ( binintersect @ X1 @ X2 )
                                                                                                          = X2 ) )
                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                          ( ( ( binintersect @ X1 @ X2 )
                                                                                                            = X1 )
                                                                                                         => ( subset @ X1 @ X2 ) )
                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                            ( ( binintersect @ X1 @ ( binunion @ X2 @ X3 ) )
                                                                                                            = ( binunion @ ( binintersect @ X1 @ X2 ) @ ( binintersect @ X1 @ X3 ) ) )
                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                             => ( ~ ( in @ X3 @ X2 )
                                                                                                               => ( in @ X3 @ ( setminus @ X1 @ X2 ) ) ) )
                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                ( ( in @ X3 @ ( setminus @ X1 @ X2 ) )
                                                                                                               => ( in @ X3 @ X1 ) )
                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                  ( ( in @ X3 @ ( setminus @ X1 @ X2 ) )
                                                                                                                 => ~ ( in @ X3 @ X2 ) )
                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                   => ( ( setminus @ X1 @ X2 )
                                                                                                                      = emptyset ) )
                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                      ( ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) )
                                                                                                                     => ( ( in @ X3 @ X1 )
                                                                                                                       => ( in @ X3 @ X2 ) ) )
                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                        ( ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) )
                                                                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                                                                         => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                          ( ~ ( in @ X3 @ X1 )
                                                                                                                         => ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) ) )
                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                            ( ( in @ X3 @ X2 )
                                                                                                                           => ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) ) )
                                                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ ( setminus @ X1 @ X2 ) @ X1 )
                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                ( ( ( setminus @ X1 @ X2 )
                                                                                                                                  = emptyset )
                                                                                                                               => ( subset @ X1 @ X2 ) )
                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                  ( ( in @ X3 @ ( symdiff @ X1 @ X2 ) )
                                                                                                                                 => ! [X4: $o] :
                                                                                                                                      ( ( ( in @ X3 @ X1 )
                                                                                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                                                                                         => X4 ) )
                                                                                                                                     => ( ( ~ ( in @ X3 @ X1 )
                                                                                                                                         => ( ( in @ X3 @ X2 )
                                                                                                                                           => X4 ) )
                                                                                                                                       => X4 ) ) )
                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                                                                                     => ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                      ( ~ ( in @ X3 @ X1 )
                                                                                                                                     => ( ( in @ X3 @ X2 )
                                                                                                                                       => ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                                       => ( ( in @ X3 @ X2 )
                                                                                                                                         => ~ ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                          ( ~ ( in @ X3 @ X1 )
                                                                                                                                         => ( ~ ( in @ X3 @ X2 )
                                                                                                                                           => ~ ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setunion @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setunion @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i] : ( iskpair @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i] : ( iskpair @ ( kpair @ X1 @ X2 ) )
                                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                                      ( ( in @ X2 @ X1 )
                                                                                                                                                     => ( subset @ ( setadjoin @ X2 @ emptyset ) @ X1 ) )
                                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                                        ( ( in @ X2 @ X1 )
                                                                                                                                                       => ( in @ ( setadjoin @ X2 @ emptyset ) @ ( powerset @ X1 ) ) )
                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                                         => ( in @ ( setadjoin @ X3 @ emptyset ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                            ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                           => ( ( X3 != X1 )
                                                                                                                                                             => ( X3 = X2 ) ) )
                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                                                             => ! [X4: $i] :
                                                                                                                                                                  ( ( in @ X4 @ X2 )
                                                                                                                                                                 => ( subset @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ ( binunion @ X1 @ X2 ) ) ) )
                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                                                               => ! [X4: $i] :
                                                                                                                                                                    ( ( in @ X4 @ X2 )
                                                                                                                                                                   => ( in @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) )
                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                                                 => ! [X4: $i] :
                                                                                                                                                                      ( ( in @ X4 @ X2 )
                                                                                                                                                                     => ( subset @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) )
                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                                                   => ! [X4: $i] :
                                                                                                                                                                        ( ( in @ X4 @ X2 )
                                                                                                                                                                       => ( in @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                                                                     => ! [X4: $i] :
                                                                                                                                                                          ( ( in @ X4 @ X2 )
                                                                                                                                                                         => ( in @ ( kpair @ X3 @ X4 ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                                                                       => ! [X4: $i] :
                                                                                                                                                                            ( ( in @ X4 @ X2 )
                                                                                                                                                                           => ( in @ ( kpair @ X3 @ X4 ) @ ( cartprod @ X1 @ X2 ) ) ) )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                          ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                                                                                                                                                                         => ~ ! [X4: $i] :
                                                                                                                                                                                ( ( in @ X4 @ X1 )
                                                                                                                                                                               => ! [X5: $i] :
                                                                                                                                                                                    ( ( in @ X5 @ X2 )
                                                                                                                                                                                   => ( X3
                                                                                                                                                                                     != ( kpair @ X4 @ X5 ) ) ) ) )
                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                            ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                                                                                                                                                                           => ( iskpair @ X3 ) )
                                                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                              ( ( in @ X2 @ ( setunion @ X1 ) )
                                                                                                                                                                             => ~ ! [X3: $i] :
                                                                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                                                                   => ~ ( in @ X2 @ X3 ) ) )
                                                                                                                                                                         => ( ! [X1: $i] : ( subset @ ( setunion @ ( setadjoin @ X1 @ emptyset ) ) @ X1 )
                                                                                                                                                                           => ( ! [X1: $i] : ( subset @ X1 @ ( setunion @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                                                                                                                             => ( ! [X1: $i] :
                                                                                                                                                                                    ( ( setunion @ ( setadjoin @ X1 @ emptyset ) )
                                                                                                                                                                                    = X1 )
                                                                                                                                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                                                                                      ( ! [X3: $i] :
                                                                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                                                                         => ! [X4: $i] :
                                                                                                                                                                                              ( ( in @ X4 @ X1 )
                                                                                                                                                                                             => ( ( X2 @ X3 )
                                                                                                                                                                                               => ( ( X2 @ X4 )
                                                                                                                                                                                                 => ( X3 = X4 ) ) ) ) )
                                                                                                                                                                                     => ( ~ ! [X3: $i] :
                                                                                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                                                                                             => ~ ( X2 @ X3 ) )
                                                                                                                                                                                       => ( singleton @ ( dsetconstr @ X1 @ X2 ) ) ) )
                                                                                                                                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                                                                                        ( ( ex1 @ X1 @ X2 )
                                                                                                                                                                                       => ~ ! [X3: $i] :
                                                                                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                                                                                             => ~ ( X2 @ X3 ) ) )
                                                                                                                                                                                   => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                                                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                                                                         => ( ( X2 @ X3 )
                                                                                                                                                                                           => ( ! [X4: $i] :
                                                                                                                                                                                                  ( ( in @ X4 @ X1 )
                                                                                                                                                                                                 => ( ( X2 @ X4 )
                                                                                                                                                                                                   => ( X4 = X3 ) ) )
                                                                                                                                                                                             => ( ex1 @ X1 @ X2 ) ) ) )
                                                                                                                                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                                                                                            ( ! [X3: $i] :
                                                                                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                                                                                               => ! [X4: $i] :
                                                                                                                                                                                                    ( ( in @ X4 @ X1 )
                                                                                                                                                                                                   => ( ( X2 @ X3 )
                                                                                                                                                                                                     => ( ( X2 @ X4 )
                                                                                                                                                                                                       => ( X3 = X4 ) ) ) ) )
                                                                                                                                                                                           => ( ~ ! [X3: $i] :
                                                                                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                                                                                   => ~ ( X2 @ X3 ) )
                                                                                                                                                                                             => ( ex1 @ X1 @ X2 ) ) )
                                                                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                              ( ( ( setadjoin @ X1 @ emptyset )
                                                                                                                                                                                                = ( setadjoin @ X2 @ emptyset ) )
                                                                                                                                                                                             => ( X1 = X2 ) )
                                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                ( ( in @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) )
                                                                                                                                                                                               => ( X1 = X3 ) )
                                                                                                                                                                                           => ( ! [X1: $i] :
                                                                                                                                                                                                  ( ( iskpair @ X1 )
                                                                                                                                                                                                 => ( singleton
                                                                                                                                                                                                    @ ( dsetconstr @ ( setunion @ X1 )
                                                                                                                                                                                                      @ ^ [X2: $i] : ( in @ ( setadjoin @ X2 @ emptyset ) @ X1 ) ) ) )
                                                                                                                                                                                             => ( ! [X1: $i] :
                                                                                                                                                                                                    ( ( singleton @ X1 )
                                                                                                                                                                                                   => ( in @ ( setunion @ X1 ) @ X1 ) )
                                                                                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                      ( ( kfst @ ( kpair @ X1 @ X2 ) )
                                                                                                                                                                                                      = X1 )
                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                        ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                                                                                                                                                                                                       => ( in @ ( kfst @ X3 ) @ X1 ) )
                                                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
                                                                                                                                                                                                          ( ( ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) )
                                                                                                                                                                                                            = ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) )
                                                                                                                                                                                                         => ( X1 = X3 ) )
                                                                                                                                                                                                     => sP1 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP6])]) ).

thf(sP7,plain,
    ( sP7
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ~ ( ( breln @ X1 @ X2 @ X3 )
             => ~ ! [X4: $i] :
                    ( ( in @ X4 @ X1 )
                   => ( ex1 @ X2
                      @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) ) )
         => ! [X4: $i] :
              ( ( in @ X4 @ X1 )
             => ( in @ ( ap @ X1 @ X2 @ X3 @ X4 ) @ X2 ) ) )
     => ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3
            @ ( dsetconstr @ ( powerset @ ( cartprod @ X1 @ X2 ) )
              @ ^ [X4: $i] :
                  ~ ( ( breln @ X1 @ X2 @ X4 )
                   => ~ ! [X5: $i] :
                          ( ( in @ X5 @ X1 )
                         => ( ex1 @ X2
                            @ ^ [X6: $i] : ( in @ ( kpair @ X5 @ X6 ) @ X4 ) ) ) ) ) )
         => ~ ( ( breln @ X1 @ X2 @ X3 )
             => ~ ! [X4: $i] :
                    ( ( in @ X4 @ X1 )
                   => ( ex1 @ X2
                      @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP7])]) ).

thf(sP8,plain,
    ( sP8
  <=> ( ! [X1: $i] :
          ( ( in @ X1 @ emptyset )
         => ! [X2: $o] : X2 )
     => ( ! [X1: $i] :
            ~ ( in @ X1 @ emptyset )
       => ( ! [X1: $i] :
              ~ ( in @ X1 @ emptyset )
         => ( ! [X1: $i > $o] :
                ( ( exu @ X1 )
               => ~ ! [X2: $i] :
                      ~ ( X1 @ X2 ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ! [X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ( in @ X3 @ X2 ) )
                 => ( ! [X3: $i] :
                        ( ( in @ X3 @ X2 )
                       => ( in @ X3 @ X1 ) )
                   => ( X1 = X2 ) ) )
             => sP2 ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP8])]) ).

thf(sP9,plain,
    ( sP9
  <=> ( ! [X1: $i,X2: $i] :
          ( ( subset @ X2 @ X1 )
         => ( in @ X2 @ ( powerset @ X1 ) ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( in @ X2 @ ( powerset @ X1 ) )
           => ( subset @ X2 @ X1 ) )
       => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( subset @ X1 @ X2 )
               => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
           => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
             => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
               => ( ! [X1: $i,X2: $i,X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                 => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( in @ X3 @ X2 )
                         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                     => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                           => ( ( ( in @ X3 @ X1 )
                               => X4 )
                             => ( ( ( in @ X3 @ X2 )
                                 => X4 )
                               => X4 ) ) )
                       => ( ! [X1: $i,X2: $i,X3: $i] :
                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                             => ( ~ ( in @ X3 @ X1 )
                               => ( in @ X3 @ X2 ) ) )
                         => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ( ( in @ X3 @ X2 )
                                     => ( in @ X3 @ ( binintersect @ X1 @ X2 ) ) ) )
                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                      ( ( subset @ X3 @ X1 )
                                     => ( ( subset @ X3 @ X2 )
                                       => ( subset @ X3 @ ( binintersect @ X1 @ X2 ) ) ) )
                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                        ( ( in @ X3 @ ( binintersect @ X1 @ X2 ) )
                                       => ( in @ X3 @ X1 ) )
                                   => ( ! [X1: $i,X2: $i] : ( subset @ ( binintersect @ X1 @ X2 ) @ X1 )
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ( subset @ X1 @ X2 )
                                           => ( ( binintersect @ X1 @ X2 )
                                              = X1 ) )
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ( ( binintersect @ X1 @ X2 )
                                                = X2 )
                                             => ( subset @ X2 @ X1 ) )
                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                ( ( in @ X3 @ ( binintersect @ X1 @ X2 ) )
                                               => ( in @ X3 @ X2 ) )
                                           => ( ! [X1: $i,X2: $i] :
                                                  ( ! [X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ~ ( in @ X3 @ X2 ) )
                                                 => ( ( binintersect @ X1 @ X2 )
                                                    = emptyset ) )
                                             => ( ! [X1: $i,X2: $i] : ( subset @ ( binintersect @ X1 @ X2 ) @ X2 )
                                               => ( ! [X1: $i,X2: $i] :
                                                      ( ( subset @ X2 @ X1 )
                                                     => ( ( binintersect @ X1 @ X2 )
                                                        = X2 ) )
                                                 => ( ! [X1: $i,X2: $i] :
                                                        ( ( ( binintersect @ X1 @ X2 )
                                                          = X1 )
                                                       => ( subset @ X1 @ X2 ) )
                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                          ( ( binintersect @ X1 @ ( binunion @ X2 @ X3 ) )
                                                          = ( binunion @ ( binintersect @ X1 @ X2 ) @ ( binintersect @ X1 @ X3 ) ) )
                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                            ( ( in @ X3 @ X1 )
                                                           => ( ~ ( in @ X3 @ X2 )
                                                             => ( in @ X3 @ ( setminus @ X1 @ X2 ) ) ) )
                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                              ( ( in @ X3 @ ( setminus @ X1 @ X2 ) )
                                                             => ( in @ X3 @ X1 ) )
                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                ( ( in @ X3 @ ( setminus @ X1 @ X2 ) )
                                                               => ~ ( in @ X3 @ X2 ) )
                                                           => ( ! [X1: $i,X2: $i] :
                                                                  ( ( subset @ X1 @ X2 )
                                                                 => ( ( setminus @ X1 @ X2 )
                                                                    = emptyset ) )
                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                    ( ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) )
                                                                   => ( ( in @ X3 @ X1 )
                                                                     => ( in @ X3 @ X2 ) ) )
                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                      ( ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) )
                                                                     => ( ~ ( in @ X3 @ X2 )
                                                                       => ~ ( in @ X3 @ X1 ) ) )
                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                        ( ~ ( in @ X3 @ X1 )
                                                                       => ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) ) )
                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                          ( ( in @ X3 @ X2 )
                                                                         => ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) ) )
                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ ( setminus @ X1 @ X2 ) @ X1 )
                                                                       => ( ! [X1: $i,X2: $i] :
                                                                              ( ( ( setminus @ X1 @ X2 )
                                                                                = emptyset )
                                                                             => ( subset @ X1 @ X2 ) )
                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                ( ( in @ X3 @ ( symdiff @ X1 @ X2 ) )
                                                                               => ! [X4: $o] :
                                                                                    ( ( ( in @ X3 @ X1 )
                                                                                     => ( ~ ( in @ X3 @ X2 )
                                                                                       => X4 ) )
                                                                                   => ( ( ~ ( in @ X3 @ X1 )
                                                                                       => ( ( in @ X3 @ X2 )
                                                                                         => X4 ) )
                                                                                     => X4 ) ) )
                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                  ( ( in @ X3 @ X1 )
                                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                                   => ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                    ( ~ ( in @ X3 @ X1 )
                                                                                   => ( ( in @ X3 @ X2 )
                                                                                     => ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                      ( ( in @ X3 @ X1 )
                                                                                     => ( ( in @ X3 @ X2 )
                                                                                       => ~ ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                        ( ~ ( in @ X3 @ X1 )
                                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                                         => ~ ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                                                                                   => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                     => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setunion @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) ) )
                                                                                       => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setunion @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) ) )
                                                                                         => ( ! [X1: $i,X2: $i] : ( iskpair @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) )
                                                                                           => ( ! [X1: $i,X2: $i] : ( iskpair @ ( kpair @ X1 @ X2 ) )
                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                    ( ( in @ X2 @ X1 )
                                                                                                   => ( subset @ ( setadjoin @ X2 @ emptyset ) @ X1 ) )
                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                      ( ( in @ X2 @ X1 )
                                                                                                     => ( in @ ( setadjoin @ X2 @ emptyset ) @ ( powerset @ X1 ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                       => ( in @ ( setadjoin @ X3 @ emptyset ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                          ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                         => ( ( X3 != X1 )
                                                                                                           => ( X3 = X2 ) ) )
                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                           => ! [X4: $i] :
                                                                                                                ( ( in @ X4 @ X2 )
                                                                                                               => ( subset @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ ( binunion @ X1 @ X2 ) ) ) )
                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                             => ! [X4: $i] :
                                                                                                                  ( ( in @ X4 @ X2 )
                                                                                                                 => ( in @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) )
                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                               => ! [X4: $i] :
                                                                                                                    ( ( in @ X4 @ X2 )
                                                                                                                   => ( subset @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) )
                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                 => ! [X4: $i] :
                                                                                                                      ( ( in @ X4 @ X2 )
                                                                                                                     => ( in @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                   => ! [X4: $i] :
                                                                                                                        ( ( in @ X4 @ X2 )
                                                                                                                       => ( in @ ( kpair @ X3 @ X4 ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                     => ! [X4: $i] :
                                                                                                                          ( ( in @ X4 @ X2 )
                                                                                                                         => ( in @ ( kpair @ X3 @ X4 ) @ ( cartprod @ X1 @ X2 ) ) ) )
                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                        ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                                                                                                                       => ~ ! [X4: $i] :
                                                                                                                              ( ( in @ X4 @ X1 )
                                                                                                                             => ! [X5: $i] :
                                                                                                                                  ( ( in @ X5 @ X2 )
                                                                                                                                 => ( X3
                                                                                                                                   != ( kpair @ X4 @ X5 ) ) ) ) )
                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                          ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                                                                                                                         => ( iskpair @ X3 ) )
                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                            ( ( in @ X2 @ ( setunion @ X1 ) )
                                                                                                                           => ~ ! [X3: $i] :
                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                 => ~ ( in @ X2 @ X3 ) ) )
                                                                                                                       => ( ! [X1: $i] : ( subset @ ( setunion @ ( setadjoin @ X1 @ emptyset ) ) @ X1 )
                                                                                                                         => ( ! [X1: $i] : ( subset @ X1 @ ( setunion @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                                                                           => ( ! [X1: $i] :
                                                                                                                                  ( ( setunion @ ( setadjoin @ X1 @ emptyset ) )
                                                                                                                                  = X1 )
                                                                                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                                    ( ! [X3: $i] :
                                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                                       => ! [X4: $i] :
                                                                                                                                            ( ( in @ X4 @ X1 )
                                                                                                                                           => ( ( X2 @ X3 )
                                                                                                                                             => ( ( X2 @ X4 )
                                                                                                                                               => ( X3 = X4 ) ) ) ) )
                                                                                                                                   => ( ~ ! [X3: $i] :
                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                           => ~ ( X2 @ X3 ) )
                                                                                                                                     => ( singleton @ ( dsetconstr @ X1 @ X2 ) ) ) )
                                                                                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                                      ( ( ex1 @ X1 @ X2 )
                                                                                                                                     => ~ ! [X3: $i] :
                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                           => ~ ( X2 @ X3 ) ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                                       => ( ( X2 @ X3 )
                                                                                                                                         => ( ! [X4: $i] :
                                                                                                                                                ( ( in @ X4 @ X1 )
                                                                                                                                               => ( ( X2 @ X4 )
                                                                                                                                                 => ( X4 = X3 ) ) )
                                                                                                                                           => ( ex1 @ X1 @ X2 ) ) ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                                          ( ! [X3: $i] :
                                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                                             => ! [X4: $i] :
                                                                                                                                                  ( ( in @ X4 @ X1 )
                                                                                                                                                 => ( ( X2 @ X3 )
                                                                                                                                                   => ( ( X2 @ X4 )
                                                                                                                                                     => ( X3 = X4 ) ) ) ) )
                                                                                                                                         => ( ~ ! [X3: $i] :
                                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                                 => ~ ( X2 @ X3 ) )
                                                                                                                                           => ( ex1 @ X1 @ X2 ) ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                            ( ( ( setadjoin @ X1 @ emptyset )
                                                                                                                                              = ( setadjoin @ X2 @ emptyset ) )
                                                                                                                                           => ( X1 = X2 ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                              ( ( in @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) )
                                                                                                                                             => ( X1 = X3 ) )
                                                                                                                                         => ( ! [X1: $i] :
                                                                                                                                                ( ( iskpair @ X1 )
                                                                                                                                               => ( singleton
                                                                                                                                                  @ ( dsetconstr @ ( setunion @ X1 )
                                                                                                                                                    @ ^ [X2: $i] : ( in @ ( setadjoin @ X2 @ emptyset ) @ X1 ) ) ) )
                                                                                                                                           => ( ! [X1: $i] :
                                                                                                                                                  ( ( singleton @ X1 )
                                                                                                                                                 => ( in @ ( setunion @ X1 ) @ X1 ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                    ( ( kfst @ ( kpair @ X1 @ X2 ) )
                                                                                                                                                    = X1 )
                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                      ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                                                                                                                                                     => ( in @ ( kfst @ X3 ) @ X1 ) )
                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
                                                                                                                                                        ( ( ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) )
                                                                                                                                                          = ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) )
                                                                                                                                                       => ( X1 = X3 ) )
                                                                                                                                                   => sP1 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP9])]) ).

thf(sP10,plain,
    ( sP10
  <=> ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ ( powerset @ X1 ) )
          = ( ! [X3: $i] :
                ( ( in @ X3 @ X2 )
               => ( in @ X3 @ X1 ) ) ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( in @ X2 @ ( setunion @ X1 ) )
            = ( ~ ! [X3: $i] :
                    ( ( in @ X2 @ X3 )
                   => ~ ( in @ X3 @ X1 ) ) ) )
       => ( ( in @ emptyset @ omega )
         => ( ! [X1: $i] :
                ( ( in @ X1 @ omega )
               => ( in @ ( setadjoin @ X1 @ X1 ) @ omega ) )
           => ( ! [X1: $i] :
                  ( ~ ( ( in @ emptyset @ X1 )
                     => ~ ! [X2: $i] :
                            ( ~ ( ( in @ X2 @ omega )
                               => ~ ( in @ X2 @ X1 ) )
                           => ( in @ ( setadjoin @ X2 @ X2 ) @ X1 ) ) )
                 => ! [X2: $i] :
                      ( ( in @ X2 @ omega )
                     => ( in @ X2 @ X1 ) ) )
             => ( ! [X1: $i > $i > $o,X2: $i] :
                    ( ! [X3: $i] :
                        ( ( in @ X3 @ X2 )
                       => ( exu @ ( X1 @ X3 ) ) )
                   => ~ ! [X3: $i] :
                          ~ ! [X4: $i] :
                              ( ( in @ X4 @ X3 )
                              = ( ~ ! [X5: $i] :
                                      ( ( in @ X5 @ X2 )
                                     => ~ ( X1 @ X5 @ X4 ) ) ) ) )
               => ( ! [X1: $i] :
                      ( ~ ! [X2: $i] :
                            ~ ( in @ X2 @ X1 )
                     => ~ ! [X2: $i] :
                            ( ( in @ X2 @ X1 )
                           => ~ ! [X3: $i] :
                                  ( ( in @ X3 @ X2 )
                                 => ~ ( in @ X3 @ X1 ) ) ) )
                 => ( ! [X1: $i] :
                        ~ ! [X2: $i] :
                            ( ~ ( ~ ( ! [X3: $i] :
                                        ( ( in @ X3 @ X2 )
                                       => ! [X4: $i] :
                                            ( ( in @ X4 @ X3 )
                                           => ( in @ X4 @ X1 ) ) )
                                   => ~ ! [X3: $i,X4: $i] :
                                          ( ~ ( ( in @ X3 @ X1 )
                                             => ~ ( in @ X4 @ X1 ) )
                                         => ( ! [X5: $i] :
                                                ( ( in @ X5 @ X2 )
                                               => ( ( in @ X3 @ X5 )
                                                  = ( in @ X4 @ X5 ) ) )
                                           => ( X3 = X4 ) ) ) )
                               => ~ ! [X3: $i,X4: $i] :
                                      ( ~ ( ( in @ X3 @ X2 )
                                         => ~ ( in @ X4 @ X2 ) )
                                     => ( ~ ! [X5: $i] :
                                              ( ( in @ X5 @ X3 )
                                             => ( in @ X5 @ X4 ) )
                                       => ! [X5: $i] :
                                            ( ( in @ X5 @ X4 )
                                           => ( in @ X5 @ X3 ) ) ) ) )
                           => ~ ! [X3: $i] :
                                  ( ~ ( ! [X4: $i] :
                                          ( ( in @ X4 @ X3 )
                                         => ( in @ X4 @ X1 ) )
                                     => ! [X4: $i] :
                                          ~ ( in @ X4 @ X3 ) )
                                 => ~ ! [X4: $i,X5: $i] :
                                        ( ~ ( ~ ( ( in @ X4 @ X2 )
                                               => ~ ( in @ X5 @ X3 ) )
                                           => ~ ! [X6: $i] :
                                                  ( ( in @ X6 @ X4 )
                                                 => ~ ( in @ X6 @ X3 ) ) )
                                       => ~ ! [X6: $i] :
                                              ( ( in @ X6 @ X2 )
                                             => ( ~ ! [X7: $i] :
                                                      ( ( in @ X7 @ X6 )
                                                     => ( in @ X7 @ X4 ) )
                                               => ( in @ X5 @ X6 ) ) ) ) ) )
                   => ( ! [X1: $i > $o] :
                          ( ( exu @ X1 )
                         => ( X1 @ ( descr @ X1 ) ) )
                     => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ( ( X2 @ X3 )
                             => ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) ) ) )
                       => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                              ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                             => ( in @ X3 @ X1 ) )
                         => sP5 ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP10])]) ).

thf(sP11,plain,
    ( sP11
  <=> ( ! [X1: $i,X2: $i] :
          ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
         => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
           => ( ( X3 != X1 )
             => ( X3 = X2 ) ) )
       => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
         => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
           => ( ! [X1: $i,X2: $i > $o] :
                  ( ~ ! [X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ~ ( X2 @ X3 ) )
                 => ( ( dsetconstr @ X1 @ X2 )
                   != emptyset ) )
             => ( ! [X1: $i > $o,X2: $i] :
                    ( ( in @ X2 @ emptyset )
                   => ( X1 @ X2 ) )
               => ( ! [X1: $i,X2: $i > $o] :
                      ( ~ ! [X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ( X2 @ X3 ) )
                     => ~ ! [X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ( X2 @ X3 ) ) )
                 => ( ! [X1: $i,X2: $i > $o] :
                        ( ! [X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ~ ( X2 @ X3 ) )
                       => ! [X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ~ ( X2 @ X3 ) ) )
                   => ( ! [X1: $i,X2: $i > $o] :
                          ( ! [X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ~ ( X2 @ X3 ) )
                         => ! [X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ~ ( X2 @ X3 ) ) )
                     => ( ! [X1: $i,X2: $i > $o] :
                            ( ~ ! [X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ( X2 @ X3 ) )
                           => ~ ! [X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ( X2 @ X3 ) ) )
                       => ( ! [X1: $o] :
                              ( X1
                             => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                         => ( ! [X1: $o] :
                                ( X1
                               => ( set2prop @ ( prop2set @ X1 ) ) )
                           => ( ! [X1: $i,X2: $i > $o] :
                                  ( ! [X3: $i] :
                                      ( ( in @ X3 @ X1 )
                                     => ~ ( X2 @ X3 ) )
                                 => ! [X3: $i] :
                                      ( ( in @ X3 @ X1 )
                                     => ~ ( X2 @ X3 ) ) )
                             => ( ! [X1: $i,X2: $i > $o] :
                                    ( ~ ! [X3: $i] :
                                          ( ( in @ X3 @ X1 )
                                         => ( X2 @ X3 ) )
                                   => ~ ! [X3: $i] :
                                          ( ( in @ X3 @ X1 )
                                         => ( X2 @ X3 ) ) )
                               => ( ! [X1: $i > $o] :
                                      ( ~ ! [X2: $i] :
                                            ( ( X1 @ X2 )
                                           => ~ ! [X3: $i] :
                                                  ( ( X1 @ X3 )
                                                 => ( X2 = X3 ) ) )
                                     => ( exu @ X1 ) )
                                 => ( ! [X1: $i > $o] :
                                        ( ~ ! [X2: $i] :
                                              ~ ( X1 @ X2 )
                                       => ( ! [X2: $i,X3: $i] :
                                              ( ( X1 @ X2 )
                                             => ( ( X1 @ X3 )
                                               => ( X2 = X3 ) ) )
                                         => ( exu @ X1 ) ) )
                                   => ( ! [X1: $i > $o] :
                                          ( ~ ! [X2: $i] :
                                                ~ ! [X3: $i] :
                                                    ( ( X1 @ X3 )
                                                    = ( X3 = X2 ) )
                                         => ( exu @ X1 ) )
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ( X1 = X2 )
                                           => ! [X3: $i,X4: $i] :
                                                ( ( X3 = X4 )
                                               => ( ( in @ X3 @ X1 )
                                                 => ( in @ X4 @ X2 ) ) ) )
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ( X1 = X2 )
                                             => ! [X3: $i,X4: $i] :
                                                  ( ( X3 = X4 )
                                                 => ( ( in @ X3 @ X1 )
                                                    = ( in @ X4 @ X2 ) ) ) )
                                         => ( ! [X1: $i > $o] :
                                                ( ( exu @ X1 )
                                               => ! [X2: $i,X3: $i] :
                                                    ( ( X1 @ X2 )
                                                   => ( ( X1 @ X3 )
                                                     => ( X2 = X3 ) ) ) )
                                           => ( ! [X1: $i > $o,X2: $i > $o] :
                                                  ( ! [X3: $i,X4: $i] :
                                                      ( ( X3 = X4 )
                                                     => ( ( X1 @ X3 )
                                                        = ( X2 @ X4 ) ) )
                                                 => ( ( exu @ X1 )
                                                    = ( exu @ X2 ) ) )
                                             => sP6 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP11])]) ).

thf(sP12,plain,
    ( sP12
  <=> ( ! [X1: $i > $o] :
          ( ( exu @ X1 )
         => ~ ! [X2: $i] :
                ~ ( X1 @ X2 ) )
     => ( ! [X1: $i,X2: $i] :
            ( ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( in @ X3 @ X2 ) )
           => ( ! [X3: $i] :
                  ( ( in @ X3 @ X2 )
                 => ( in @ X3 @ X1 ) )
             => ( X1 = X2 ) ) )
       => sP2 ) ) ),
    introduced(definition,[new_symbols(definition,[sP12])]) ).

thf(sP13,plain,
    ( sP13
  <=> ( ! [X1: $i,X2: $i] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X2 )
             => ( in @ X3 @ X1 ) )
         => ( in @ X2 @ ( powerset @ X1 ) ) )
     => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
       => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( in @ X2 @ ( powerset @ X1 ) )
               => ( ( in @ X3 @ X2 )
                 => ( in @ X3 @ X1 ) ) )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( in @ X2 @ X3 )
                 => ( ( in @ X3 @ X1 )
                   => ( in @ X2 @ ( setunion @ X1 ) ) ) )
             => ( ! [X1: $i,X2: $i] :
                    ( ( in @ X2 @ ( setunion @ X1 ) )
                   => ! [X3: $o] :
                        ( ! [X4: $i] :
                            ( ( in @ X2 @ X4 )
                           => ( ( in @ X4 @ X1 )
                             => X3 ) )
                       => X3 ) )
               => ( ! [X1: $i,X2: $i] :
                      ( ( in @ X2 @ X1 )
                     => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                 => ( ! [X1: $i > $o] :
                        ( ( exu @ X1 )
                       => ~ ! [X2: $i] :
                              ~ ! [X3: $i] :
                                  ( ( X1 @ X3 )
                                  = ( X3 = X2 ) ) )
                   => ( ! [X1: $i] :
                          ( ( nonempty @ X1 )
                         => ~ ! [X2: $i] :
                                ~ ( in @ X2 @ X1 ) )
                     => ( ! [X1: $i,X2: $i] :
                            ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                           => ( X1 = X2 ) )
                       => ( ! [X1: $i,X2: $i] :
                              ( ( X1 != X2 )
                             => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                         => sP3 ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP13])]) ).

thf(sP14,plain,
    ( sP14
  <=> ( ! [X1: $i,X2: $i] :
          ( ( subset @ X1 @ X2 )
         => ( ( binintersect @ X1 @ X2 )
            = X1 ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( ( binintersect @ X1 @ X2 )
              = X2 )
           => ( subset @ X2 @ X1 ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ ( binintersect @ X1 @ X2 ) )
             => ( in @ X3 @ X2 ) )
         => ( ! [X1: $i,X2: $i] :
                ( ! [X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ~ ( in @ X3 @ X2 ) )
               => ( ( binintersect @ X1 @ X2 )
                  = emptyset ) )
           => ( ! [X1: $i,X2: $i] : ( subset @ ( binintersect @ X1 @ X2 ) @ X2 )
             => ( ! [X1: $i,X2: $i] :
                    ( ( subset @ X2 @ X1 )
                   => ( ( binintersect @ X1 @ X2 )
                      = X2 ) )
               => ( ! [X1: $i,X2: $i] :
                      ( ( ( binintersect @ X1 @ X2 )
                        = X1 )
                     => ( subset @ X1 @ X2 ) )
                 => ( ! [X1: $i,X2: $i,X3: $i] :
                        ( ( binintersect @ X1 @ ( binunion @ X2 @ X3 ) )
                        = ( binunion @ ( binintersect @ X1 @ X2 ) @ ( binintersect @ X1 @ X3 ) ) )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ( ~ ( in @ X3 @ X2 )
                           => ( in @ X3 @ ( setminus @ X1 @ X2 ) ) ) )
                     => ( ! [X1: $i,X2: $i,X3: $i] :
                            ( ( in @ X3 @ ( setminus @ X1 @ X2 ) )
                           => ( in @ X3 @ X1 ) )
                       => ( ! [X1: $i,X2: $i,X3: $i] :
                              ( ( in @ X3 @ ( setminus @ X1 @ X2 ) )
                             => ~ ( in @ X3 @ X2 ) )
                         => ( ! [X1: $i,X2: $i] :
                                ( ( subset @ X1 @ X2 )
                               => ( ( setminus @ X1 @ X2 )
                                  = emptyset ) )
                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                  ( ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) )
                                 => ( ( in @ X3 @ X1 )
                                   => ( in @ X3 @ X2 ) ) )
                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                    ( ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) )
                                   => ( ~ ( in @ X3 @ X2 )
                                     => ~ ( in @ X3 @ X1 ) ) )
                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                      ( ~ ( in @ X3 @ X1 )
                                     => ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) ) )
                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                        ( ( in @ X3 @ X2 )
                                       => ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) ) )
                                   => ( ! [X1: $i,X2: $i] : ( subset @ ( setminus @ X1 @ X2 ) @ X1 )
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ( ( setminus @ X1 @ X2 )
                                              = emptyset )
                                           => ( subset @ X1 @ X2 ) )
                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                              ( ( in @ X3 @ ( symdiff @ X1 @ X2 ) )
                                             => ! [X4: $o] :
                                                  ( ( ( in @ X3 @ X1 )
                                                   => ( ~ ( in @ X3 @ X2 )
                                                     => X4 ) )
                                                 => ( ( ~ ( in @ X3 @ X1 )
                                                     => ( ( in @ X3 @ X2 )
                                                       => X4 ) )
                                                   => X4 ) ) )
                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                ( ( in @ X3 @ X1 )
                                               => ( ~ ( in @ X3 @ X2 )
                                                 => ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                  ( ~ ( in @ X3 @ X1 )
                                                 => ( ( in @ X3 @ X2 )
                                                   => ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                    ( ( in @ X3 @ X1 )
                                                   => ( ( in @ X3 @ X2 )
                                                     => ~ ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                      ( ~ ( in @ X3 @ X1 )
                                                     => ( ~ ( in @ X3 @ X2 )
                                                       => ~ ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                                                 => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                   => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setunion @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) ) )
                                                     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setunion @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) ) )
                                                       => ( ! [X1: $i,X2: $i] : ( iskpair @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) )
                                                         => ( ! [X1: $i,X2: $i] : ( iskpair @ ( kpair @ X1 @ X2 ) )
                                                           => ( ! [X1: $i,X2: $i] :
                                                                  ( ( in @ X2 @ X1 )
                                                                 => ( subset @ ( setadjoin @ X2 @ emptyset ) @ X1 ) )
                                                             => ( ! [X1: $i,X2: $i] :
                                                                    ( ( in @ X2 @ X1 )
                                                                   => ( in @ ( setadjoin @ X2 @ emptyset ) @ ( powerset @ X1 ) ) )
                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                      ( ( in @ X3 @ X1 )
                                                                     => ( in @ ( setadjoin @ X3 @ emptyset ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) )
                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                        ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                       => ( ( X3 != X1 )
                                                                         => ( X3 = X2 ) ) )
                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                          ( ( in @ X3 @ X1 )
                                                                         => ! [X4: $i] :
                                                                              ( ( in @ X4 @ X2 )
                                                                             => ( subset @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ ( binunion @ X1 @ X2 ) ) ) )
                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                            ( ( in @ X3 @ X1 )
                                                                           => ! [X4: $i] :
                                                                                ( ( in @ X4 @ X2 )
                                                                               => ( in @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) )
                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                              ( ( in @ X3 @ X1 )
                                                                             => ! [X4: $i] :
                                                                                  ( ( in @ X4 @ X2 )
                                                                                 => ( subset @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) )
                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                ( ( in @ X3 @ X1 )
                                                                               => ! [X4: $i] :
                                                                                    ( ( in @ X4 @ X2 )
                                                                                   => ( in @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                  ( ( in @ X3 @ X1 )
                                                                                 => ! [X4: $i] :
                                                                                      ( ( in @ X4 @ X2 )
                                                                                     => ( in @ ( kpair @ X3 @ X4 ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                    ( ( in @ X3 @ X1 )
                                                                                   => ! [X4: $i] :
                                                                                        ( ( in @ X4 @ X2 )
                                                                                       => ( in @ ( kpair @ X3 @ X4 ) @ ( cartprod @ X1 @ X2 ) ) ) )
                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                      ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                                                                                     => ~ ! [X4: $i] :
                                                                                            ( ( in @ X4 @ X1 )
                                                                                           => ! [X5: $i] :
                                                                                                ( ( in @ X5 @ X2 )
                                                                                               => ( X3
                                                                                                 != ( kpair @ X4 @ X5 ) ) ) ) )
                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                        ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                                                                                       => ( iskpair @ X3 ) )
                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                          ( ( in @ X2 @ ( setunion @ X1 ) )
                                                                                         => ~ ! [X3: $i] :
                                                                                                ( ( in @ X3 @ X1 )
                                                                                               => ~ ( in @ X2 @ X3 ) ) )
                                                                                     => ( ! [X1: $i] : ( subset @ ( setunion @ ( setadjoin @ X1 @ emptyset ) ) @ X1 )
                                                                                       => ( ! [X1: $i] : ( subset @ X1 @ ( setunion @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                                         => ( ! [X1: $i] :
                                                                                                ( ( setunion @ ( setadjoin @ X1 @ emptyset ) )
                                                                                                = X1 )
                                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                                  ( ! [X3: $i] :
                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                     => ! [X4: $i] :
                                                                                                          ( ( in @ X4 @ X1 )
                                                                                                         => ( ( X2 @ X3 )
                                                                                                           => ( ( X2 @ X4 )
                                                                                                             => ( X3 = X4 ) ) ) ) )
                                                                                                 => ( ~ ! [X3: $i] :
                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                         => ~ ( X2 @ X3 ) )
                                                                                                   => ( singleton @ ( dsetconstr @ X1 @ X2 ) ) ) )
                                                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                                                    ( ( ex1 @ X1 @ X2 )
                                                                                                   => ~ ! [X3: $i] :
                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                         => ~ ( X2 @ X3 ) ) )
                                                                                               => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                     => ( ( X2 @ X3 )
                                                                                                       => ( ! [X4: $i] :
                                                                                                              ( ( in @ X4 @ X1 )
                                                                                                             => ( ( X2 @ X4 )
                                                                                                               => ( X4 = X3 ) ) )
                                                                                                         => ( ex1 @ X1 @ X2 ) ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                                                        ( ! [X3: $i] :
                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                           => ! [X4: $i] :
                                                                                                                ( ( in @ X4 @ X1 )
                                                                                                               => ( ( X2 @ X3 )
                                                                                                                 => ( ( X2 @ X4 )
                                                                                                                   => ( X3 = X4 ) ) ) ) )
                                                                                                       => ( ~ ! [X3: $i] :
                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                               => ~ ( X2 @ X3 ) )
                                                                                                         => ( ex1 @ X1 @ X2 ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                          ( ( ( setadjoin @ X1 @ emptyset )
                                                                                                            = ( setadjoin @ X2 @ emptyset ) )
                                                                                                         => ( X1 = X2 ) )
                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                            ( ( in @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) )
                                                                                                           => ( X1 = X3 ) )
                                                                                                       => ( ! [X1: $i] :
                                                                                                              ( ( iskpair @ X1 )
                                                                                                             => ( singleton
                                                                                                                @ ( dsetconstr @ ( setunion @ X1 )
                                                                                                                  @ ^ [X2: $i] : ( in @ ( setadjoin @ X2 @ emptyset ) @ X1 ) ) ) )
                                                                                                         => ( ! [X1: $i] :
                                                                                                                ( ( singleton @ X1 )
                                                                                                               => ( in @ ( setunion @ X1 ) @ X1 ) )
                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                  ( ( kfst @ ( kpair @ X1 @ X2 ) )
                                                                                                                  = X1 )
                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                    ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                                                                                                                   => ( in @ ( kfst @ X3 ) @ X1 ) )
                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
                                                                                                                      ( ( ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) )
                                                                                                                        = ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) )
                                                                                                                     => ( X1 = X3 ) )
                                                                                                                 => sP1 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP14])]) ).

thf(sP15,plain,
    ( sP15
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ~ ( ( breln @ X1 @ X2 @ X3 )
             => ~ ! [X4: $i] :
                    ( ( in @ X4 @ X1 )
                   => ( ex1 @ X2
                      @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) ) )
         => ! [X4: $i] :
              ( ( in @ X4 @ X1 )
             => ( singleton
                @ ( dsetconstr @ X2
                  @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ~ ( ( breln @ X1 @ X2 @ X3 )
               => ~ ! [X4: $i] :
                      ( ( in @ X4 @ X1 )
                     => ( ex1 @ X2
                        @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) ) )
           => ! [X4: $i] :
                ( ( in @ X4 @ X1 )
               => ( in
                  @ ( setunion
                    @ ( dsetconstr @ X2
                      @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) )
                  @ X2 ) ) )
       => sP7 ) ) ),
    introduced(definition,[new_symbols(definition,[sP15])]) ).

thf(sP16,plain,
    ( sP16
  <=> ( ! [X1: $i,X2: $i > $o,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
            = ( X2 @ X3 ) ) )
     => ( ! [X1: $i] :
            ( ( nonempty @ X1 )
           => ~ ! [X2: $i] :
                  ~ ( in @ X2 @ X1 ) )
       => ( ! [X1: $i,X2: $i > $o,X3: $i] :
              ( ( in @ X3 @ X1 )
             => ( ( X2 @ X3 )
               => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
         => ( ! [X1: $i] :
                ( ~ ! [X2: $i] :
                      ~ ( in @ X2 @ X1 )
               => ( nonempty @ X1 ) )
           => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
             => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
               => ( ! [X1: $i,X2: $i,X3: $i] :
                      ( ( in @ X3 @ X2 )
                     => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                 => ( ! [X1: $i,X2: $i,X3: $i] :
                        ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                       => ! [X4: $o] :
                            ( ( ( X3 = X1 )
                             => X4 )
                           => ( ( ( in @ X3 @ X2 )
                               => X4 )
                             => X4 ) ) )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                         => ( ( X3 != X1 )
                           => ( in @ X3 @ X2 ) ) )
                     => ( ! [X1: $i] :
                            ( ( dsetconstr @ X1
                              @ ^ [X2: $i] : ~ $false )
                            = X1 )
                       => sP13 ) ) ) ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP16])]) ).

thf(sP17,plain,
    ( sP17
  <=> ( ! [X1: $i > $o] :
          ( ( exu @ X1 )
         => ! [X2: $i,X3: $i] :
              ( ( X1 @ X2 )
             => ( ( X1 @ X3 )
               => ( X2 = X3 ) ) ) )
     => ( ! [X1: $i > $o,X2: $i > $o] :
            ( ! [X3: $i,X4: $i] :
                ( ( X3 = X4 )
               => ( ( X1 @ X3 )
                  = ( X2 @ X4 ) ) )
           => ( ( exu @ X1 )
             => ( ( exu @ X2 )
               => ( ( descr @ X1 )
                  = ( descr @ X2 ) ) ) ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( X1 = X2 )
             => ! [X3: $i > $o,X4: $i > $o] :
                  ( ! [X5: $i] :
                      ( ( in @ X5 @ X1 )
                     => ! [X6: $i] :
                          ( ( in @ X6 @ X2 )
                         => ( ( X5 = X6 )
                           => ( ( X3 @ X5 )
                              = ( X4 @ X6 ) ) ) ) )
                 => ( ( dsetconstr @ X1 @ X3 )
                    = ( dsetconstr @ X2 @ X4 ) ) ) )
         => ( ! [X1: $i,X2: $i] :
                ( ! [X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ( in @ X3 @ X2 ) )
               => ( subset @ X1 @ X2 ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ( X1 = X2 )
                 => ( subset @ X2 @ X1 ) )
             => ( ! [X1: $i,X2: $i] :
                    ( ( X1 = X2 )
                   => ( subset @ X1 @ X2 ) )
               => ( ! [X1: $i,X2: $i] :
                      ( ! [X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ( in @ X3 @ X2 ) )
                     => ( subset @ X1 @ X2 ) )
                 => ( ( !! @ ( subset @ emptyset ) )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( subset @ X1 @ X2 )
                         => ( ( in @ X3 @ X1 )
                           => ( in @ X3 @ X2 ) ) )
                     => ( ! [X1: $i,X2: $i,X3: $i] :
                            ( ( subset @ X1 @ X2 )
                           => ( ~ ( in @ X3 @ X2 )
                             => ~ ( in @ X3 @ X1 ) ) )
                       => ( ! [X1: $i,X2: $i,X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ( ~ ( in @ X3 @ X2 )
                               => ~ ( subset @ X1 @ X2 ) ) )
                         => ( ! [X1: $i,X2: $i] :
                                ( ~ ( subset @ X1 @ X2 )
                               => ( X1 != X2 ) )
                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ( ~ ( in @ X3 @ X2 )
                                   => ( X1 != X2 ) ) )
                             => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                      ( ( subset @ X1 @ X2 )
                                     => ( ( subset @ X2 @ X3 )
                                       => ( subset @ X1 @ X3 ) ) )
                                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                          ( ( subset @ X1 @ X3 )
                                         => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ( subset @ X1 @ X2 )
                                           => ( in @ X1 @ ( powerset @ X2 ) ) )
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ( subset @ X1 @ X2 )
                                             => ( ( subset @ X2 @ X1 )
                                               => ( X1 = X2 ) ) )
                                         => ( ! [X1: $i] :
                                                ( ( subset @ X1 @ emptyset )
                                               => ( X1 = emptyset ) )
                                           => sP9 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP17])]) ).

thf(sP18,plain,
    ( sP18
  <=> ( ! [X1: $i,X2: $i] :
          ( ( subset @ X1 @ X2 )
         => ( ( setminus @ X1 @ X2 )
            = emptyset ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) )
           => ( ( in @ X3 @ X1 )
             => ( in @ X3 @ X2 ) ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) )
             => ( ~ ( in @ X3 @ X2 )
               => ~ ( in @ X3 @ X1 ) ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ~ ( in @ X3 @ X1 )
               => ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) ) )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( in @ X3 @ X2 )
                 => ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) ) )
             => ( ! [X1: $i,X2: $i] : ( subset @ ( setminus @ X1 @ X2 ) @ X1 )
               => ( ! [X1: $i,X2: $i] :
                      ( ( ( setminus @ X1 @ X2 )
                        = emptyset )
                     => ( subset @ X1 @ X2 ) )
                 => ( ! [X1: $i,X2: $i,X3: $i] :
                        ( ( in @ X3 @ ( symdiff @ X1 @ X2 ) )
                       => ! [X4: $o] :
                            ( ( ( in @ X3 @ X1 )
                             => ( ~ ( in @ X3 @ X2 )
                               => X4 ) )
                           => ( ( ~ ( in @ X3 @ X1 )
                               => ( ( in @ X3 @ X2 )
                                 => X4 ) )
                             => X4 ) ) )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ( ~ ( in @ X3 @ X2 )
                           => ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                     => ( ! [X1: $i,X2: $i,X3: $i] :
                            ( ~ ( in @ X3 @ X1 )
                           => ( ( in @ X3 @ X2 )
                             => ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                       => ( ! [X1: $i,X2: $i,X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ( ( in @ X3 @ X2 )
                               => ~ ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                ( ~ ( in @ X3 @ X1 )
                               => ( ~ ( in @ X3 @ X2 )
                                 => ~ ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                           => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                             => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setunion @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) ) )
                               => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setunion @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) ) )
                                 => ( ! [X1: $i,X2: $i] : ( iskpair @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) )
                                   => ( ! [X1: $i,X2: $i] : ( iskpair @ ( kpair @ X1 @ X2 ) )
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ( in @ X2 @ X1 )
                                           => ( subset @ ( setadjoin @ X2 @ emptyset ) @ X1 ) )
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ( in @ X2 @ X1 )
                                             => ( in @ ( setadjoin @ X2 @ emptyset ) @ ( powerset @ X1 ) ) )
                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                ( ( in @ X3 @ X1 )
                                               => ( in @ ( setadjoin @ X3 @ emptyset ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) )
                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                  ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                 => ( ( X3 != X1 )
                                                   => ( X3 = X2 ) ) )
                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                    ( ( in @ X3 @ X1 )
                                                   => ! [X4: $i] :
                                                        ( ( in @ X4 @ X2 )
                                                       => ( subset @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ ( binunion @ X1 @ X2 ) ) ) )
                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ! [X4: $i] :
                                                          ( ( in @ X4 @ X2 )
                                                         => ( in @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) )
                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                        ( ( in @ X3 @ X1 )
                                                       => ! [X4: $i] :
                                                            ( ( in @ X4 @ X2 )
                                                           => ( subset @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) )
                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                          ( ( in @ X3 @ X1 )
                                                         => ! [X4: $i] :
                                                              ( ( in @ X4 @ X2 )
                                                             => ( in @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                            ( ( in @ X3 @ X1 )
                                                           => ! [X4: $i] :
                                                                ( ( in @ X4 @ X2 )
                                                               => ( in @ ( kpair @ X3 @ X4 ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                              ( ( in @ X3 @ X1 )
                                                             => ! [X4: $i] :
                                                                  ( ( in @ X4 @ X2 )
                                                                 => ( in @ ( kpair @ X3 @ X4 ) @ ( cartprod @ X1 @ X2 ) ) ) )
                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                                                               => ~ ! [X4: $i] :
                                                                      ( ( in @ X4 @ X1 )
                                                                     => ! [X5: $i] :
                                                                          ( ( in @ X5 @ X2 )
                                                                         => ( X3
                                                                           != ( kpair @ X4 @ X5 ) ) ) ) )
                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                  ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                                                                 => ( iskpair @ X3 ) )
                                                             => ( ! [X1: $i,X2: $i] :
                                                                    ( ( in @ X2 @ ( setunion @ X1 ) )
                                                                   => ~ ! [X3: $i] :
                                                                          ( ( in @ X3 @ X1 )
                                                                         => ~ ( in @ X2 @ X3 ) ) )
                                                               => ( ! [X1: $i] : ( subset @ ( setunion @ ( setadjoin @ X1 @ emptyset ) ) @ X1 )
                                                                 => ( ! [X1: $i] : ( subset @ X1 @ ( setunion @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                   => ( ! [X1: $i] :
                                                                          ( ( setunion @ ( setadjoin @ X1 @ emptyset ) )
                                                                          = X1 )
                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                            ( ! [X3: $i] :
                                                                                ( ( in @ X3 @ X1 )
                                                                               => ! [X4: $i] :
                                                                                    ( ( in @ X4 @ X1 )
                                                                                   => ( ( X2 @ X3 )
                                                                                     => ( ( X2 @ X4 )
                                                                                       => ( X3 = X4 ) ) ) ) )
                                                                           => ( ~ ! [X3: $i] :
                                                                                    ( ( in @ X3 @ X1 )
                                                                                   => ~ ( X2 @ X3 ) )
                                                                             => ( singleton @ ( dsetconstr @ X1 @ X2 ) ) ) )
                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                              ( ( ex1 @ X1 @ X2 )
                                                                             => ~ ! [X3: $i] :
                                                                                    ( ( in @ X3 @ X1 )
                                                                                   => ~ ( X2 @ X3 ) ) )
                                                                         => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                                                                ( ( in @ X3 @ X1 )
                                                                               => ( ( X2 @ X3 )
                                                                                 => ( ! [X4: $i] :
                                                                                        ( ( in @ X4 @ X1 )
                                                                                       => ( ( X2 @ X4 )
                                                                                         => ( X4 = X3 ) ) )
                                                                                   => ( ex1 @ X1 @ X2 ) ) ) )
                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                  ( ! [X3: $i] :
                                                                                      ( ( in @ X3 @ X1 )
                                                                                     => ! [X4: $i] :
                                                                                          ( ( in @ X4 @ X1 )
                                                                                         => ( ( X2 @ X3 )
                                                                                           => ( ( X2 @ X4 )
                                                                                             => ( X3 = X4 ) ) ) ) )
                                                                                 => ( ~ ! [X3: $i] :
                                                                                          ( ( in @ X3 @ X1 )
                                                                                         => ~ ( X2 @ X3 ) )
                                                                                   => ( ex1 @ X1 @ X2 ) ) )
                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                    ( ( ( setadjoin @ X1 @ emptyset )
                                                                                      = ( setadjoin @ X2 @ emptyset ) )
                                                                                   => ( X1 = X2 ) )
                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                      ( ( in @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) )
                                                                                     => ( X1 = X3 ) )
                                                                                 => ( ! [X1: $i] :
                                                                                        ( ( iskpair @ X1 )
                                                                                       => ( singleton
                                                                                          @ ( dsetconstr @ ( setunion @ X1 )
                                                                                            @ ^ [X2: $i] : ( in @ ( setadjoin @ X2 @ emptyset ) @ X1 ) ) ) )
                                                                                   => ( ! [X1: $i] :
                                                                                          ( ( singleton @ X1 )
                                                                                         => ( in @ ( setunion @ X1 ) @ X1 ) )
                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                            ( ( kfst @ ( kpair @ X1 @ X2 ) )
                                                                                            = X1 )
                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                              ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                                                                                             => ( in @ ( kfst @ X3 ) @ X1 ) )
                                                                                         => ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
                                                                                                ( ( ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) )
                                                                                                  = ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) )
                                                                                               => ( X1 = X3 ) )
                                                                                           => sP1 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP18])]) ).

thf(sP19,plain,
    ( sP19
  <=> ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setunion @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) ) )
     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setunion @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) ) )
       => ( ! [X1: $i,X2: $i] : ( iskpair @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) )
         => ( ! [X1: $i,X2: $i] : ( iskpair @ ( kpair @ X1 @ X2 ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ( in @ X2 @ X1 )
                 => ( subset @ ( setadjoin @ X2 @ emptyset ) @ X1 ) )
             => ( ! [X1: $i,X2: $i] :
                    ( ( in @ X2 @ X1 )
                   => ( in @ ( setadjoin @ X2 @ emptyset ) @ ( powerset @ X1 ) ) )
               => ( ! [X1: $i,X2: $i,X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ( in @ ( setadjoin @ X3 @ emptyset ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) )
                 => ( ! [X1: $i,X2: $i,X3: $i] :
                        ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                       => ( ( X3 != X1 )
                         => ( X3 = X2 ) ) )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ! [X4: $i] :
                              ( ( in @ X4 @ X2 )
                             => ( subset @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ ( binunion @ X1 @ X2 ) ) ) )
                     => ( ! [X1: $i,X2: $i,X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ! [X4: $i] :
                                ( ( in @ X4 @ X2 )
                               => ( in @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) )
                       => ( ! [X1: $i,X2: $i,X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ! [X4: $i] :
                                  ( ( in @ X4 @ X2 )
                                 => ( subset @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) )
                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                ( ( in @ X3 @ X1 )
                               => ! [X4: $i] :
                                    ( ( in @ X4 @ X2 )
                                   => ( in @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ! [X4: $i] :
                                      ( ( in @ X4 @ X2 )
                                     => ( in @ ( kpair @ X3 @ X4 ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ! [X4: $i] :
                                        ( ( in @ X4 @ X2 )
                                       => ( in @ ( kpair @ X3 @ X4 ) @ ( cartprod @ X1 @ X2 ) ) ) )
                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                      ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                                     => ~ ! [X4: $i] :
                                            ( ( in @ X4 @ X1 )
                                           => ! [X5: $i] :
                                                ( ( in @ X5 @ X2 )
                                               => ( X3
                                                 != ( kpair @ X4 @ X5 ) ) ) ) )
                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                        ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                                       => ( iskpair @ X3 ) )
                                   => ( ! [X1: $i,X2: $i] :
                                          ( ( in @ X2 @ ( setunion @ X1 ) )
                                         => ~ ! [X3: $i] :
                                                ( ( in @ X3 @ X1 )
                                               => ~ ( in @ X2 @ X3 ) ) )
                                     => ( ! [X1: $i] : ( subset @ ( setunion @ ( setadjoin @ X1 @ emptyset ) ) @ X1 )
                                       => ( ! [X1: $i] : ( subset @ X1 @ ( setunion @ ( setadjoin @ X1 @ emptyset ) ) )
                                         => ( ! [X1: $i] :
                                                ( ( setunion @ ( setadjoin @ X1 @ emptyset ) )
                                                = X1 )
                                           => ( ! [X1: $i,X2: $i > $o] :
                                                  ( ! [X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ! [X4: $i] :
                                                          ( ( in @ X4 @ X1 )
                                                         => ( ( X2 @ X3 )
                                                           => ( ( X2 @ X4 )
                                                             => ( X3 = X4 ) ) ) ) )
                                                 => ( ~ ! [X3: $i] :
                                                          ( ( in @ X3 @ X1 )
                                                         => ~ ( X2 @ X3 ) )
                                                   => ( singleton @ ( dsetconstr @ X1 @ X2 ) ) ) )
                                             => ( ! [X1: $i,X2: $i > $o] :
                                                    ( ( ex1 @ X1 @ X2 )
                                                   => ~ ! [X3: $i] :
                                                          ( ( in @ X3 @ X1 )
                                                         => ~ ( X2 @ X3 ) ) )
                                               => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ( ( X2 @ X3 )
                                                       => ( ! [X4: $i] :
                                                              ( ( in @ X4 @ X1 )
                                                             => ( ( X2 @ X4 )
                                                               => ( X4 = X3 ) ) )
                                                         => ( ex1 @ X1 @ X2 ) ) ) )
                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                        ( ! [X3: $i] :
                                                            ( ( in @ X3 @ X1 )
                                                           => ! [X4: $i] :
                                                                ( ( in @ X4 @ X1 )
                                                               => ( ( X2 @ X3 )
                                                                 => ( ( X2 @ X4 )
                                                                   => ( X3 = X4 ) ) ) ) )
                                                       => ( ~ ! [X3: $i] :
                                                                ( ( in @ X3 @ X1 )
                                                               => ~ ( X2 @ X3 ) )
                                                         => ( ex1 @ X1 @ X2 ) ) )
                                                   => ( ! [X1: $i,X2: $i] :
                                                          ( ( ( setadjoin @ X1 @ emptyset )
                                                            = ( setadjoin @ X2 @ emptyset ) )
                                                         => ( X1 = X2 ) )
                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                            ( ( in @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) )
                                                           => ( X1 = X3 ) )
                                                       => ( ! [X1: $i] :
                                                              ( ( iskpair @ X1 )
                                                             => ( singleton
                                                                @ ( dsetconstr @ ( setunion @ X1 )
                                                                  @ ^ [X2: $i] : ( in @ ( setadjoin @ X2 @ emptyset ) @ X1 ) ) ) )
                                                         => ( ! [X1: $i] :
                                                                ( ( singleton @ X1 )
                                                               => ( in @ ( setunion @ X1 ) @ X1 ) )
                                                           => ( ! [X1: $i,X2: $i] :
                                                                  ( ( kfst @ ( kpair @ X1 @ X2 ) )
                                                                  = X1 )
                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                    ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                                                                   => ( in @ ( kfst @ X3 ) @ X1 ) )
                                                               => ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
                                                                      ( ( ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) )
                                                                        = ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) )
                                                                     => ( X1 = X3 ) )
                                                                 => sP1 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP19])]) ).

thf(sP20,plain,
    ( sP20
  <=> ( ! [X1: $i,X2: $i,X3: $i > $i > $o,X4: $i,X5: $i] :
          ( ( in @ ( kpair @ X4 @ X5 ) @ ( dpsetconstr @ X1 @ X2 @ X3 ) )
         => ( X3 @ X4 @ X5 ) )
     => sP15 ) ),
    introduced(definition,[new_symbols(definition,[sP20])]) ).

thf(sP21,plain,
    ( sP21
  <=> ( ! [X1: $i] : ( subset @ ( setunion @ ( setadjoin @ X1 @ emptyset ) ) @ X1 )
     => ( ! [X1: $i] : ( subset @ X1 @ ( setunion @ ( setadjoin @ X1 @ emptyset ) ) )
       => ( ! [X1: $i] :
              ( ( setunion @ ( setadjoin @ X1 @ emptyset ) )
              = X1 )
         => ( ! [X1: $i,X2: $i > $o] :
                ( ! [X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ! [X4: $i] :
                        ( ( in @ X4 @ X1 )
                       => ( ( X2 @ X3 )
                         => ( ( X2 @ X4 )
                           => ( X3 = X4 ) ) ) ) )
               => ( ~ ! [X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ~ ( X2 @ X3 ) )
                 => ( singleton @ ( dsetconstr @ X1 @ X2 ) ) ) )
           => ( ! [X1: $i,X2: $i > $o] :
                  ( ( ex1 @ X1 @ X2 )
                 => ~ ! [X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ~ ( X2 @ X3 ) ) )
             => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ( ( X2 @ X3 )
                     => ( ! [X4: $i] :
                            ( ( in @ X4 @ X1 )
                           => ( ( X2 @ X4 )
                             => ( X4 = X3 ) ) )
                       => ( ex1 @ X1 @ X2 ) ) ) )
               => ( ! [X1: $i,X2: $i > $o] :
                      ( ! [X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ! [X4: $i] :
                              ( ( in @ X4 @ X1 )
                             => ( ( X2 @ X3 )
                               => ( ( X2 @ X4 )
                                 => ( X3 = X4 ) ) ) ) )
                     => ( ~ ! [X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ~ ( X2 @ X3 ) )
                       => ( ex1 @ X1 @ X2 ) ) )
                 => ( ! [X1: $i,X2: $i] :
                        ( ( ( setadjoin @ X1 @ emptyset )
                          = ( setadjoin @ X2 @ emptyset ) )
                       => ( X1 = X2 ) )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( in @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) )
                         => ( X1 = X3 ) )
                     => ( ! [X1: $i] :
                            ( ( iskpair @ X1 )
                           => ( singleton
                              @ ( dsetconstr @ ( setunion @ X1 )
                                @ ^ [X2: $i] : ( in @ ( setadjoin @ X2 @ emptyset ) @ X1 ) ) ) )
                       => ( ! [X1: $i] :
                              ( ( singleton @ X1 )
                             => ( in @ ( setunion @ X1 ) @ X1 ) )
                         => ( ! [X1: $i,X2: $i] :
                                ( ( kfst @ ( kpair @ X1 @ X2 ) )
                                = X1 )
                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                  ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                                 => ( in @ ( kfst @ X3 ) @ X1 ) )
                             => ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
                                    ( ( ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) )
                                      = ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) )
                                   => ( X1 = X3 ) )
                               => sP1 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP21])]) ).

thf(sP22,plain,
    ( sP22
  <=> ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
     => sP19 ) ),
    introduced(definition,[new_symbols(definition,[sP22])]) ).

thf(sP23,plain,
    ( sP23
  <=> ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
       => ( ! [X1: $i,X2: $i > $o] :
              ( ~ ! [X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ~ ( X2 @ X3 ) )
             => ( ( dsetconstr @ X1 @ X2 )
               != emptyset ) )
         => ( ! [X1: $i > $o,X2: $i] :
                ( ( in @ X2 @ emptyset )
               => ( X1 @ X2 ) )
           => ( ! [X1: $i,X2: $i > $o] :
                  ( ~ ! [X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ( X2 @ X3 ) )
                 => ~ ! [X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ( X2 @ X3 ) ) )
             => ( ! [X1: $i,X2: $i > $o] :
                    ( ! [X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ~ ( X2 @ X3 ) )
                   => ! [X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ~ ( X2 @ X3 ) ) )
               => ( ! [X1: $i,X2: $i > $o] :
                      ( ! [X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ~ ( X2 @ X3 ) )
                     => ! [X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ~ ( X2 @ X3 ) ) )
                 => ( ! [X1: $i,X2: $i > $o] :
                        ( ~ ! [X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ( X2 @ X3 ) )
                       => ~ ! [X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ( X2 @ X3 ) ) )
                   => ( ! [X1: $o] :
                          ( X1
                         => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                     => ( ! [X1: $o] :
                            ( X1
                           => ( set2prop @ ( prop2set @ X1 ) ) )
                       => ( ! [X1: $i,X2: $i > $o] :
                              ( ! [X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ~ ( X2 @ X3 ) )
                             => ! [X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ~ ( X2 @ X3 ) ) )
                         => ( ! [X1: $i,X2: $i > $o] :
                                ( ~ ! [X3: $i] :
                                      ( ( in @ X3 @ X1 )
                                     => ( X2 @ X3 ) )
                               => ~ ! [X3: $i] :
                                      ( ( in @ X3 @ X1 )
                                     => ( X2 @ X3 ) ) )
                           => ( ! [X1: $i > $o] :
                                  ( ~ ! [X2: $i] :
                                        ( ( X1 @ X2 )
                                       => ~ ! [X3: $i] :
                                              ( ( X1 @ X3 )
                                             => ( X2 = X3 ) ) )
                                 => ( exu @ X1 ) )
                             => ( ! [X1: $i > $o] :
                                    ( ~ ! [X2: $i] :
                                          ~ ( X1 @ X2 )
                                   => ( ! [X2: $i,X3: $i] :
                                          ( ( X1 @ X2 )
                                         => ( ( X1 @ X3 )
                                           => ( X2 = X3 ) ) )
                                     => ( exu @ X1 ) ) )
                               => ( ! [X1: $i > $o] :
                                      ( ~ ! [X2: $i] :
                                            ~ ! [X3: $i] :
                                                ( ( X1 @ X3 )
                                                = ( X3 = X2 ) )
                                     => ( exu @ X1 ) )
                                 => ( ! [X1: $i,X2: $i] :
                                        ( ( X1 = X2 )
                                       => ! [X3: $i,X4: $i] :
                                            ( ( X3 = X4 )
                                           => ( ( in @ X3 @ X1 )
                                             => ( in @ X4 @ X2 ) ) ) )
                                   => ( ! [X1: $i,X2: $i] :
                                          ( ( X1 = X2 )
                                         => ! [X3: $i,X4: $i] :
                                              ( ( X3 = X4 )
                                             => ( ( in @ X3 @ X1 )
                                                = ( in @ X4 @ X2 ) ) ) )
                                     => ( ! [X1: $i > $o] :
                                            ( ( exu @ X1 )
                                           => ! [X2: $i,X3: $i] :
                                                ( ( X1 @ X2 )
                                               => ( ( X1 @ X3 )
                                                 => ( X2 = X3 ) ) ) )
                                       => ( ! [X1: $i > $o,X2: $i > $o] :
                                              ( ! [X3: $i,X4: $i] :
                                                  ( ( X3 = X4 )
                                                 => ( ( X1 @ X3 )
                                                    = ( X2 @ X4 ) ) )
                                             => ( ( exu @ X1 )
                                                = ( exu @ X2 ) ) )
                                         => sP6 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP23])]) ).

thf(sP24,plain,
    ( sP24
  <=> ( ! [X1: $i,X2: $i] :
          ( ( kfst @ ( kpair @ X1 @ X2 ) )
          = X1 )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
           => ( in @ ( kfst @ X3 ) @ X1 ) )
       => ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
              ( ( ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) )
                = ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) )
             => ( X1 = X3 ) )
         => sP1 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP24])]) ).

thf(sP25,plain,
    ( sP25
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) )
         => ( ~ ( in @ X3 @ X2 )
           => ~ ( in @ X3 @ X1 ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ~ ( in @ X3 @ X1 )
           => ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ X2 )
             => ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) ) )
         => ( ! [X1: $i,X2: $i] : ( subset @ ( setminus @ X1 @ X2 ) @ X1 )
           => ( ! [X1: $i,X2: $i] :
                  ( ( ( setminus @ X1 @ X2 )
                    = emptyset )
                 => ( subset @ X1 @ X2 ) )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( in @ X3 @ ( symdiff @ X1 @ X2 ) )
                   => ! [X4: $o] :
                        ( ( ( in @ X3 @ X1 )
                         => ( ~ ( in @ X3 @ X2 )
                           => X4 ) )
                       => ( ( ~ ( in @ X3 @ X1 )
                           => ( ( in @ X3 @ X2 )
                             => X4 ) )
                         => X4 ) ) )
               => ( ! [X1: $i,X2: $i,X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ( ~ ( in @ X3 @ X2 )
                       => ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                 => ( ! [X1: $i,X2: $i,X3: $i] :
                        ( ~ ( in @ X3 @ X1 )
                       => ( ( in @ X3 @ X2 )
                         => ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ( ( in @ X3 @ X2 )
                           => ~ ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                     => ( ! [X1: $i,X2: $i,X3: $i] :
                            ( ~ ( in @ X3 @ X1 )
                           => ( ~ ( in @ X3 @ X2 )
                             => ~ ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
                       => sP22 ) ) ) ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP25])]) ).

thf(sP26,plain,
    ( sP26
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
         => ( iskpair @ X3 ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( in @ X2 @ ( setunion @ X1 ) )
           => ~ ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ~ ( in @ X2 @ X3 ) ) )
       => sP21 ) ) ),
    introduced(definition,[new_symbols(definition,[sP26])]) ).

thf(sP27,plain,
    ( sP27
  <=> ( ! [X1: $i,X2: $i] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ( in @ X3 @ X2 ) )
         => ( ! [X3: $i] :
                ( ( in @ X3 @ X2 )
               => ( in @ X3 @ X1 ) )
           => ( X1 = X2 ) ) )
     => sP2 ) ),
    introduced(definition,[new_symbols(definition,[sP27])]) ).

thf(sP28,plain,
    ( sP28
  <=> ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
          ( ( ( kpair @ X1 @ X2 )
            = ( kpair @ X3 @ X4 ) )
         => ( X2 = X4 ) )
     => sP4 ) ),
    introduced(definition,[new_symbols(definition,[sP28])]) ).

thf(sP29,plain,
    ( sP29
  <=> ( ! [X1: $o,X2: $i] :
          ( ( in @ X2 @ ( prop2set @ X1 ) )
         => X1 )
     => sP8 ) ),
    introduced(definition,[new_symbols(definition,[sP29])]) ).

thf(sP30,plain,
    ( sP30
  <=> ( ! [X1: $i] :
          ~ ( in @ X1 @ emptyset )
     => ( ! [X1: $i] :
            ~ ( in @ X1 @ emptyset )
       => sP12 ) ) ),
    introduced(definition,[new_symbols(definition,[sP30])]) ).

thf(sP31,plain,
    ( sP31
  <=> ( ! [X1: $i] :
          ( ( dsetconstr @ X1
            @ ^ [X2: $i] : ~ $false )
          = X1 )
     => sP13 ) ),
    introduced(definition,[new_symbols(definition,[sP31])]) ).

thf(sP32,plain,
    ( sP32
  <=> ( ! [X1: $i > $o] :
          ( ~ ! [X2: $i] :
                ~ ( X1 @ X2 )
         => ( ! [X2: $i,X3: $i] :
                ( ( X1 @ X2 )
               => ( ( X1 @ X3 )
                 => ( X2 = X3 ) ) )
           => ( exu @ X1 ) ) )
     => ( ! [X1: $i > $o] :
            ( ~ ! [X2: $i] :
                  ~ ! [X3: $i] :
                      ( ( X1 @ X3 )
                      = ( X3 = X2 ) )
           => ( exu @ X1 ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( X1 = X2 )
             => ! [X3: $i,X4: $i] :
                  ( ( X3 = X4 )
                 => ( ( in @ X3 @ X1 )
                   => ( in @ X4 @ X2 ) ) ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( X1 = X2 )
               => ! [X3: $i,X4: $i] :
                    ( ( X3 = X4 )
                   => ( ( in @ X3 @ X1 )
                      = ( in @ X4 @ X2 ) ) ) )
           => ( ! [X1: $i > $o] :
                  ( ( exu @ X1 )
                 => ! [X2: $i,X3: $i] :
                      ( ( X1 @ X2 )
                     => ( ( X1 @ X3 )
                       => ( X2 = X3 ) ) ) )
             => ( ! [X1: $i > $o,X2: $i > $o] :
                    ( ! [X3: $i,X4: $i] :
                        ( ( X3 = X4 )
                       => ( ( X1 @ X3 )
                          = ( X2 @ X4 ) ) )
                   => ( ( exu @ X1 )
                      = ( exu @ X2 ) ) )
               => sP6 ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP32])]) ).

thf(sP33,plain,
    ( sP33
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( subset @ X1 @ X2 )
         => ( ( subset @ X2 @ X3 )
           => ( subset @ X1 @ X3 ) ) )
     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( subset @ X1 @ X3 )
             => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( subset @ X1 @ X2 )
               => ( in @ X1 @ ( powerset @ X2 ) ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ( subset @ X1 @ X2 )
                 => ( ( subset @ X2 @ X1 )
                   => ( X1 = X2 ) ) )
             => ( ! [X1: $i] :
                    ( ( subset @ X1 @ emptyset )
                   => ( X1 = emptyset ) )
               => sP9 ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP33])]) ).

thf(sP34,plain,
    ( sP34
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ~ ( ( breln @ X1 @ X2 @ X3 )
             => ~ ! [X4: $i] :
                    ( ( in @ X4 @ X1 )
                   => ( ex1 @ X2
                      @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) ) )
         => ! [X4: $i] :
              ( ( in @ X4 @ X1 )
             => ( in
                @ ( setunion
                  @ ( dsetconstr @ X2
                    @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) )
                @ X2 ) ) )
     => sP7 ) ),
    introduced(definition,[new_symbols(definition,[sP34])]) ).

thf(sP35,plain,
    ( sP35
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
          = ( ( X3 != X1 )
           => ( in @ X3 @ X2 ) ) )
     => sP10 ) ),
    introduced(definition,[new_symbols(definition,[sP35])]) ).

thf(sP36,plain,
    ( sP36
  <=> ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ! [X3: $i,X4: $i] :
              ( ( X3 = X4 )
             => ( ( in @ X3 @ X1 )
                = ( in @ X4 @ X2 ) ) ) )
     => ( ! [X1: $i > $o] :
            ( ( exu @ X1 )
           => ! [X2: $i,X3: $i] :
                ( ( X1 @ X2 )
               => ( ( X1 @ X3 )
                 => ( X2 = X3 ) ) ) )
       => ( ! [X1: $i > $o,X2: $i > $o] :
              ( ! [X3: $i,X4: $i] :
                  ( ( X3 = X4 )
                 => ( ( X1 @ X3 )
                    = ( X2 @ X4 ) ) )
             => ( ( exu @ X1 )
                = ( exu @ X2 ) ) )
         => sP6 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP36])]) ).

thf(sP37,plain,
    ( sP37
  <=> ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ X1 )
           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
       => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( in @ X3 @ X2 )
               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
           => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                 => ( ( ( in @ X3 @ X1 )
                     => X4 )
                   => ( ( ( in @ X3 @ X2 )
                       => X4 )
                     => X4 ) ) )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                   => ( ~ ( in @ X3 @ X1 )
                     => ( in @ X3 @ X2 ) ) )
               => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ( ( in @ X3 @ X2 )
                           => ( in @ X3 @ ( binintersect @ X1 @ X2 ) ) ) )
                     => ( ! [X1: $i,X2: $i,X3: $i] :
                            ( ( subset @ X3 @ X1 )
                           => ( ( subset @ X3 @ X2 )
                             => ( subset @ X3 @ ( binintersect @ X1 @ X2 ) ) ) )
                       => ( ! [X1: $i,X2: $i,X3: $i] :
                              ( ( in @ X3 @ ( binintersect @ X1 @ X2 ) )
                             => ( in @ X3 @ X1 ) )
                         => ( ! [X1: $i,X2: $i] : ( subset @ ( binintersect @ X1 @ X2 ) @ X1 )
                           => sP14 ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP37])]) ).

thf(sP38,plain,
    ( sP38
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X2 @ X3 )
         => ( ( in @ X3 @ X1 )
           => ( in @ X2 @ ( setunion @ X1 ) ) ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( in @ X2 @ ( setunion @ X1 ) )
           => ! [X3: $o] :
                ( ! [X4: $i] :
                    ( ( in @ X2 @ X4 )
                   => ( ( in @ X4 @ X1 )
                     => X3 ) )
               => X3 ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( in @ X2 @ X1 )
             => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
         => ( ! [X1: $i > $o] :
                ( ( exu @ X1 )
               => ~ ! [X2: $i] :
                      ~ ! [X3: $i] :
                          ( ( X1 @ X3 )
                          = ( X3 = X2 ) ) )
           => ( ! [X1: $i] :
                  ( ( nonempty @ X1 )
                 => ~ ! [X2: $i] :
                        ~ ( in @ X2 @ X1 ) )
             => ( ! [X1: $i,X2: $i] :
                    ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                   => ( X1 = X2 ) )
               => ( ! [X1: $i,X2: $i] :
                      ( ( X1 != X2 )
                     => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                 => sP3 ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP38])]) ).

thf(sP39,plain,
    ( sP39
  <=> ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
         => ( ( ( in @ X3 @ X1 )
             => X4 )
           => ( ( ( in @ X3 @ X2 )
               => X4 )
             => X4 ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
           => ( ~ ( in @ X3 @ X1 )
             => ( in @ X3 @ X2 ) ) )
       => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ( ( in @ X3 @ X2 )
                   => ( in @ X3 @ ( binintersect @ X1 @ X2 ) ) ) )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( subset @ X3 @ X1 )
                   => ( ( subset @ X3 @ X2 )
                     => ( subset @ X3 @ ( binintersect @ X1 @ X2 ) ) ) )
               => ( ! [X1: $i,X2: $i,X3: $i] :
                      ( ( in @ X3 @ ( binintersect @ X1 @ X2 ) )
                     => ( in @ X3 @ X1 ) )
                 => ( ! [X1: $i,X2: $i] : ( subset @ ( binintersect @ X1 @ X2 ) @ X1 )
                   => sP14 ) ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP39])]) ).

thf(sP40,plain,
    ( sP40
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
         => ( in @ ( kfst @ X3 ) @ X1 ) )
     => ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
            ( ( ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) )
              = ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) )
           => ( X1 = X3 ) )
       => sP1 ) ) ),
    introduced(definition,[new_symbols(definition,[sP40])]) ).

thf(sP41,plain,
    ( sP41
  <=> ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
          ( ( ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) )
            = ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) )
         => ( X2 = X4 ) )
     => sP28 ) ),
    introduced(definition,[new_symbols(definition,[sP41])]) ).

thf(sP42,plain,
    ( sP42
  <=> ( ( !! @ ( subset @ emptyset ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( subset @ X1 @ X2 )
           => ( ( in @ X3 @ X1 )
             => ( in @ X3 @ X2 ) ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( subset @ X1 @ X2 )
             => ( ~ ( in @ X3 @ X2 )
               => ~ ( in @ X3 @ X1 ) ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( ~ ( in @ X3 @ X2 )
                 => ~ ( subset @ X1 @ X2 ) ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ~ ( subset @ X1 @ X2 )
                 => ( X1 != X2 ) )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ( ~ ( in @ X3 @ X2 )
                     => ( X1 != X2 ) ) )
               => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                 => sP33 ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP42])]) ).

thf(sP43,plain,
    ( sP43
  <=> ( ! [X1: $i,X2: $i] : ( iskpair @ ( kpair @ X1 @ X2 ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( in @ X2 @ X1 )
           => ( subset @ ( setadjoin @ X2 @ emptyset ) @ X1 ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( in @ X2 @ X1 )
             => ( in @ ( setadjoin @ X2 @ emptyset ) @ ( powerset @ X1 ) ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( in @ ( setadjoin @ X3 @ emptyset ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                 => ( ( X3 != X1 )
                   => ( X3 = X2 ) ) )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ! [X4: $i] :
                        ( ( in @ X4 @ X2 )
                       => ( subset @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ ( binunion @ X1 @ X2 ) ) ) )
               => ( ! [X1: $i,X2: $i,X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ! [X4: $i] :
                          ( ( in @ X4 @ X2 )
                         => ( in @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) )
                 => ( ! [X1: $i,X2: $i,X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ! [X4: $i] :
                            ( ( in @ X4 @ X2 )
                           => ( subset @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ! [X4: $i] :
                              ( ( in @ X4 @ X2 )
                             => ( in @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
                     => ( ! [X1: $i,X2: $i,X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ! [X4: $i] :
                                ( ( in @ X4 @ X2 )
                               => ( in @ ( kpair @ X3 @ X4 ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
                       => ( ! [X1: $i,X2: $i,X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ! [X4: $i] :
                                  ( ( in @ X4 @ X2 )
                                 => ( in @ ( kpair @ X3 @ X4 ) @ ( cartprod @ X1 @ X2 ) ) ) )
                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                               => ~ ! [X4: $i] :
                                      ( ( in @ X4 @ X1 )
                                     => ! [X5: $i] :
                                          ( ( in @ X5 @ X2 )
                                         => ( X3
                                           != ( kpair @ X4 @ X5 ) ) ) ) )
                           => sP26 ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP43])]) ).

thf(sP44,plain,
    ( sP44
  <=> ( ! [X1: $i,X2: $i] : ( subset @ ( binintersect @ X1 @ X2 ) @ X2 )
     => ( ! [X1: $i,X2: $i] :
            ( ( subset @ X2 @ X1 )
           => ( ( binintersect @ X1 @ X2 )
              = X2 ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( ( binintersect @ X1 @ X2 )
                = X1 )
             => ( subset @ X1 @ X2 ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( binintersect @ X1 @ ( binunion @ X2 @ X3 ) )
                = ( binunion @ ( binintersect @ X1 @ X2 ) @ ( binintersect @ X1 @ X3 ) ) )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ( ~ ( in @ X3 @ X2 )
                   => ( in @ X3 @ ( setminus @ X1 @ X2 ) ) ) )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( in @ X3 @ ( setminus @ X1 @ X2 ) )
                   => ( in @ X3 @ X1 ) )
               => ( ! [X1: $i,X2: $i,X3: $i] :
                      ( ( in @ X3 @ ( setminus @ X1 @ X2 ) )
                     => ~ ( in @ X3 @ X2 ) )
                 => sP18 ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP44])]) ).

thf(sP45,plain,
    ( sP45
  <=> ( ! [X1: $i,X2: $i > $o] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ! [X4: $i] :
                  ( ( in @ X4 @ X1 )
                 => ( ( X2 @ X3 )
                   => ( ( X2 @ X4 )
                     => ( X3 = X4 ) ) ) ) )
         => ( ~ ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ~ ( X2 @ X3 ) )
           => ( singleton @ ( dsetconstr @ X1 @ X2 ) ) ) )
     => ( ! [X1: $i,X2: $i > $o] :
            ( ( ex1 @ X1 @ X2 )
           => ~ ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ~ ( X2 @ X3 ) ) )
       => ( ! [X1: $i,X2: $i > $o,X3: $i] :
              ( ( in @ X3 @ X1 )
             => ( ( X2 @ X3 )
               => ( ! [X4: $i] :
                      ( ( in @ X4 @ X1 )
                     => ( ( X2 @ X4 )
                       => ( X4 = X3 ) ) )
                 => ( ex1 @ X1 @ X2 ) ) ) )
         => ( ! [X1: $i,X2: $i > $o] :
                ( ! [X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ! [X4: $i] :
                        ( ( in @ X4 @ X1 )
                       => ( ( X2 @ X3 )
                         => ( ( X2 @ X4 )
                           => ( X3 = X4 ) ) ) ) )
               => ( ~ ! [X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ~ ( X2 @ X3 ) )
                 => ( ex1 @ X1 @ X2 ) ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ( ( setadjoin @ X1 @ emptyset )
                    = ( setadjoin @ X2 @ emptyset ) )
                 => ( X1 = X2 ) )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( in @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) )
                   => ( X1 = X3 ) )
               => ( ! [X1: $i] :
                      ( ( iskpair @ X1 )
                     => ( singleton
                        @ ( dsetconstr @ ( setunion @ X1 )
                          @ ^ [X2: $i] : ( in @ ( setadjoin @ X2 @ emptyset ) @ X1 ) ) ) )
                 => ( ! [X1: $i] :
                        ( ( singleton @ X1 )
                       => ( in @ ( setunion @ X1 ) @ X1 ) )
                   => sP24 ) ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP45])]) ).

thf(sP46,plain,
    ( sP46
  <=> ( ! [X1: $i,X2: $i,X3: $i > $i > $o,X4: $i] :
          ( ( in @ X4 @ X1 )
         => ! [X5: $i] :
              ( ( in @ X5 @ X2 )
             => ( ( in @ ( kpair @ X4 @ X5 ) @ ( dpsetconstr @ X1 @ X2 @ X3 ) )
               => ( X3 @ X4 @ X5 ) ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i > $i > $o,X4: $i,X5: $i] :
            ( ( in @ ( kpair @ X4 @ X5 ) @ ( dpsetconstr @ X1 @ X2 @ X3 ) )
           => ( in @ X4 @ X1 ) )
       => ( ! [X1: $i,X2: $i,X3: $i > $i > $o,X4: $i,X5: $i] :
              ( ( in @ ( kpair @ X4 @ X5 ) @ ( dpsetconstr @ X1 @ X2 @ X3 ) )
             => ( in @ X5 @ X2 ) )
         => sP20 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP46])]) ).

thf(sP47,plain,
    ( sP47
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X2 @ ( powerset @ X1 ) )
         => ( ( in @ X3 @ X2 )
           => ( in @ X3 @ X1 ) ) )
     => sP38 ) ),
    introduced(definition,[new_symbols(definition,[sP47])]) ).

thf(sP48,plain,
    ( sP48
  <=> ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ( ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) )
            = ( setadjoin @ X1 @ emptyset ) ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( X1 = X2 )
           => ( ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) )
              = ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ emptyset ) ) )
       => ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
              ( ( ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) )
                = ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) )
             => ( ( X3 = X4 )
               => ( X2 = X4 ) ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                  = ( setadjoin @ X3 @ emptyset ) )
               => ( X1 = X2 ) )
           => sP41 ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP48])]) ).

thf(sP49,plain,
    ( sP49
  <=> ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ! [X3: $i > $o,X4: $i > $o] :
              ( ! [X5: $i] :
                  ( ( in @ X5 @ X1 )
                 => ! [X6: $i] :
                      ( ( in @ X6 @ X2 )
                     => ( ( X5 = X6 )
                       => ( ( X3 @ X5 )
                          = ( X4 @ X6 ) ) ) ) )
             => ( ( dsetconstr @ X1 @ X3 )
                = ( dsetconstr @ X2 @ X4 ) ) ) )
     => ( ! [X1: $i,X2: $i] :
            ( ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( in @ X3 @ X2 ) )
           => ( subset @ X1 @ X2 ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( X1 = X2 )
             => ( subset @ X2 @ X1 ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( X1 = X2 )
               => ( subset @ X1 @ X2 ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ! [X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ( in @ X3 @ X2 ) )
                 => ( subset @ X1 @ X2 ) )
             => sP42 ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP49])]) ).

thf(sP50,plain,
    ( sP50
  <=> ( ! [X1: $i,X2: $i] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ( in @ X3 @ X2 ) )
         => ( subset @ X1 @ X2 ) )
     => sP42 ) ),
    introduced(definition,[new_symbols(definition,[sP50])]) ).

thf(sP51,plain,
    ( sP51
  <=> ( ! [X1: $i,X2: $i,X3: $i > $i > $o,X4: $i,X5: $i] :
          ( ( in @ ( kpair @ X4 @ X5 ) @ ( dpsetconstr @ X1 @ X2 @ X3 ) )
         => ( in @ X5 @ X2 ) )
     => sP20 ) ),
    introduced(definition,[new_symbols(definition,[sP51])]) ).

thf(sP52,plain,
    ( sP52
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
         => ~ ! [X4: $i] :
                ( ( in @ X4 @ X1 )
               => ! [X5: $i] :
                    ( ( in @ X5 @ X2 )
                   => ( X3
                     != ( kpair @ X4 @ X5 ) ) ) ) )
     => sP26 ) ),
    introduced(definition,[new_symbols(definition,[sP52])]) ).

thf(sP53,plain,
    ( sP53
  <=> ( ! [X1: $i] :
          ( ( nonempty @ X1 )
         => ~ ! [X2: $i] :
                ~ ( in @ X2 @ X1 ) )
     => ( ! [X1: $i,X2: $i > $o,X3: $i] :
            ( ( in @ X3 @ X1 )
           => ( ( X2 @ X3 )
             => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
       => ( ! [X1: $i] :
              ( ~ ! [X2: $i] :
                    ~ ( in @ X2 @ X1 )
             => ( nonempty @ X1 ) )
         => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
           => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( in @ X3 @ X2 )
                   => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
               => ( ! [X1: $i,X2: $i,X3: $i] :
                      ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                     => ! [X4: $o] :
                          ( ( ( X3 = X1 )
                           => X4 )
                         => ( ( ( in @ X3 @ X2 )
                             => X4 )
                           => X4 ) ) )
                 => ( ! [X1: $i,X2: $i,X3: $i] :
                        ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                       => ( ( X3 != X1 )
                         => ( in @ X3 @ X2 ) ) )
                   => sP31 ) ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP53])]) ).

thf(sP54,plain,
    ( sP54
  <=> ( ! [X1: $i,X2: $i] :
          ( ( ( setminus @ X1 @ X2 )
            = emptyset )
         => ( subset @ X1 @ X2 ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ ( symdiff @ X1 @ X2 ) )
           => ! [X4: $o] :
                ( ( ( in @ X3 @ X1 )
                 => ( ~ ( in @ X3 @ X2 )
                   => X4 ) )
               => ( ( ~ ( in @ X3 @ X1 )
                   => ( ( in @ X3 @ X2 )
                     => X4 ) )
                 => X4 ) ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ X1 )
             => ( ~ ( in @ X3 @ X2 )
               => ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ~ ( in @ X3 @ X1 )
               => ( ( in @ X3 @ X2 )
                 => ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ( ( in @ X3 @ X2 )
                   => ~ ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ~ ( in @ X3 @ X1 )
                   => ( ~ ( in @ X3 @ X2 )
                     => ~ ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
               => sP22 ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP54])]) ).

thf(sP55,plain,
    ( sP55
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ~ ( in @ X3 @ X1 )
         => ( ~ ( in @ X3 @ X2 )
           => ~ ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
     => sP22 ) ),
    introduced(definition,[new_symbols(definition,[sP55])]) ).

thf(sP56,plain,
    ( sP56
  <=> ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ ( setunion @ X1 ) )
         => ! [X3: $o] :
              ( ! [X4: $i] :
                  ( ( in @ X2 @ X4 )
                 => ( ( in @ X4 @ X1 )
                   => X3 ) )
             => X3 ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( in @ X2 @ X1 )
           => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
       => ( ! [X1: $i > $o] :
              ( ( exu @ X1 )
             => ~ ! [X2: $i] :
                    ~ ! [X3: $i] :
                        ( ( X1 @ X3 )
                        = ( X3 = X2 ) ) )
         => ( ! [X1: $i] :
                ( ( nonempty @ X1 )
               => ~ ! [X2: $i] :
                      ~ ( in @ X2 @ X1 ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                 => ( X1 = X2 ) )
             => ( ! [X1: $i,X2: $i] :
                    ( ( X1 != X2 )
                   => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
               => sP3 ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP56])]) ).

thf(sP57,plain,
    ( sP57
  <=> ( ! [X1: $i > $o] :
          ( ~ ! [X2: $i] :
                ( ( X1 @ X2 )
               => ~ ! [X3: $i] :
                      ( ( X1 @ X3 )
                     => ( X2 = X3 ) ) )
         => ( exu @ X1 ) )
     => sP32 ) ),
    introduced(definition,[new_symbols(definition,[sP57])]) ).

thf(sP58,plain,
    ( sP58
  <=> ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( subset @ X1 @ X2 )
           => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
       => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
         => sP37 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP58])]) ).

thf(sP59,plain,
    ( sP59
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X2 )
         => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
           => ! [X4: $o] :
                ( ( ( X3 = X1 )
                 => X4 )
               => ( ( ( in @ X3 @ X2 )
                   => X4 )
                 => X4 ) ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
             => ( ( X3 != X1 )
               => ( in @ X3 @ X2 ) ) )
         => sP31 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP59])]) ).

thf(sP60,plain,
    ( sP60
  <=> ( ! [X1: $i,X2: $i] :
          ( ( X1 != X2 )
         => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
     => sP3 ) ),
    introduced(definition,[new_symbols(definition,[sP60])]) ).

thf(sP61,plain,
    ( sP61
  <=> ( ! [X1: $i,X2: $i] :
          ( ( subset @ X1 @ X2 )
         => ( ( subset @ X2 @ X1 )
           => ( X1 = X2 ) ) )
     => ( ! [X1: $i] :
            ( ( subset @ X1 @ emptyset )
           => ( X1 = emptyset ) )
       => sP9 ) ) ),
    introduced(definition,[new_symbols(definition,[sP61])]) ).

thf(sP62,plain,
    ( sP62
  <=> ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setunion @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) ) )
     => ( ! [X1: $i,X2: $i] : ( iskpair @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) )
       => sP43 ) ) ),
    introduced(definition,[new_symbols(definition,[sP62])]) ).

thf(sP63,plain,
    ( sP63
  <=> ( ! [X1: $i] :
          ~ ( in @ X1 @ emptyset )
     => sP12 ) ),
    introduced(definition,[new_symbols(definition,[sP63])]) ).

thf(sP64,plain,
    ( sP64
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ~ ( in @ X3 @ X2 )
           => ( X1 != X2 ) ) )
     => ( ! [X1: $i] : ( subset @ X1 @ X1 )
       => sP33 ) ) ),
    introduced(definition,[new_symbols(definition,[sP64])]) ).

thf(sP65,plain,
    ( sP65
  <=> ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ( ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) )
            = ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ emptyset ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
            ( ( ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) )
              = ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) )
           => ( ( X3 = X4 )
             => ( X2 = X4 ) ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                = ( setadjoin @ X3 @ emptyset ) )
             => ( X1 = X2 ) )
         => sP41 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP65])]) ).

thf(sP66,plain,
    ( sP66
  <=> ( ! [X1: $i] : ( subset @ X1 @ ( setunion @ ( setadjoin @ X1 @ emptyset ) ) )
     => ( ! [X1: $i] :
            ( ( setunion @ ( setadjoin @ X1 @ emptyset ) )
            = X1 )
       => sP45 ) ) ),
    introduced(definition,[new_symbols(definition,[sP66])]) ).

thf(sP67,plain,
    ( sP67
  <=> ( ! [X1: $i,X2: $i > $o,X3: $i] :
          ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
         => ( in @ X3 @ X1 ) )
     => sP5 ) ),
    introduced(definition,[new_symbols(definition,[sP67])]) ).

thf(sP68,plain,
    ( sP68
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ~ ( in @ X3 @ X2 )
           => ~ ( subset @ X1 @ X2 ) ) )
     => ( ! [X1: $i,X2: $i] :
            ( ~ ( subset @ X1 @ X2 )
           => ( X1 != X2 ) )
       => sP64 ) ) ),
    introduced(definition,[new_symbols(definition,[sP68])]) ).

thf(sP69,plain,
    ( sP69
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( symdiff @ X1 @ X2 ) )
         => ! [X4: $o] :
              ( ( ( in @ X3 @ X1 )
               => ( ~ ( in @ X3 @ X2 )
                 => X4 ) )
             => ( ( ~ ( in @ X3 @ X1 )
                 => ( ( in @ X3 @ X2 )
                   => X4 ) )
               => X4 ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ X1 )
           => ( ~ ( in @ X3 @ X2 )
             => ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ~ ( in @ X3 @ X1 )
             => ( ( in @ X3 @ X2 )
               => ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( ( in @ X3 @ X2 )
                 => ~ ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
           => sP55 ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP69])]) ).

thf(sP70,plain,
    ( sP70
  <=> ( ! [X1: $i > $o] :
          ( ~ ! [X2: $i] :
                ~ ! [X3: $i] :
                    ( ( X1 @ X3 )
                    = ( X3 = X2 ) )
         => ( exu @ X1 ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( X1 = X2 )
           => ! [X3: $i,X4: $i] :
                ( ( X3 = X4 )
               => ( ( in @ X3 @ X1 )
                 => ( in @ X4 @ X2 ) ) ) )
       => sP36 ) ) ),
    introduced(definition,[new_symbols(definition,[sP70])]) ).

thf(sP71,plain,
    ( sP71
  <=> ( ! [X1: $i > $o,X2: $i > $o] :
          ( ! [X3: $i,X4: $i] :
              ( ( X3 = X4 )
             => ( ( X1 @ X3 )
                = ( X2 @ X4 ) ) )
         => ( ( exu @ X1 )
           => ( ( exu @ X2 )
             => ( ( descr @ X1 )
                = ( descr @ X2 ) ) ) ) )
     => sP49 ) ),
    introduced(definition,[new_symbols(definition,[sP71])]) ).

thf(sP72,plain,
    ( sP72
  <=> ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ X1 )
         => ( subset @ ( setadjoin @ X2 @ emptyset ) @ X1 ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( in @ X2 @ X1 )
           => ( in @ ( setadjoin @ X2 @ emptyset ) @ ( powerset @ X1 ) ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ X1 )
             => ( in @ ( setadjoin @ X3 @ emptyset ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
               => ( ( X3 != X1 )
                 => ( X3 = X2 ) ) )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ! [X4: $i] :
                      ( ( in @ X4 @ X2 )
                     => ( subset @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ ( binunion @ X1 @ X2 ) ) ) )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ! [X4: $i] :
                        ( ( in @ X4 @ X2 )
                       => ( in @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) )
               => ( ! [X1: $i,X2: $i,X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ! [X4: $i] :
                          ( ( in @ X4 @ X2 )
                         => ( subset @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) )
                 => ( ! [X1: $i,X2: $i,X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ! [X4: $i] :
                            ( ( in @ X4 @ X2 )
                           => ( in @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ! [X4: $i] :
                              ( ( in @ X4 @ X2 )
                             => ( in @ ( kpair @ X3 @ X4 ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
                     => ( ! [X1: $i,X2: $i,X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ! [X4: $i] :
                                ( ( in @ X4 @ X2 )
                               => ( in @ ( kpair @ X3 @ X4 ) @ ( cartprod @ X1 @ X2 ) ) ) )
                       => sP52 ) ) ) ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP72])]) ).

thf(sP73,plain,
    ( sP73
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ~ ( in @ X3 @ X2 )
           => ( in @ X3 @ ( setminus @ X1 @ X2 ) ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ ( setminus @ X1 @ X2 ) )
           => ( in @ X3 @ X1 ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ ( setminus @ X1 @ X2 ) )
             => ~ ( in @ X3 @ X2 ) )
         => sP18 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP73])]) ).

thf(sP74,plain,
    ( sP74
  <=> ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
          ( ( ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) )
            = ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) )
         => ( ( X3 = X4 )
           => ( X2 = X4 ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) )
              = ( setadjoin @ X3 @ emptyset ) )
           => ( X1 = X2 ) )
       => sP41 ) ) ),
    introduced(definition,[new_symbols(definition,[sP74])]) ).

thf(sP75,plain,
    ( sP75
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
         => ! [X4: $o] :
              ( ( ( X3 = X1 )
               => X4 )
             => ( ( ( in @ X3 @ X2 )
                 => X4 )
               => X4 ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
           => ( ( X3 != X1 )
             => ( in @ X3 @ X2 ) ) )
       => sP31 ) ) ),
    introduced(definition,[new_symbols(definition,[sP75])]) ).

thf(sP76,plain,
    ( sP76
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( subset @ X1 @ X2 )
         => ( ( in @ X3 @ X1 )
           => ( in @ X3 @ X2 ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( subset @ X1 @ X2 )
           => ( ~ ( in @ X3 @ X2 )
             => ~ ( in @ X3 @ X1 ) ) )
       => sP68 ) ) ),
    introduced(definition,[new_symbols(definition,[sP76])]) ).

thf(sP77,plain,
    ( sP77
  <=> ( ! [X1: $i,X2: $i,X3: $i > $i > $o] : ( breln @ X1 @ X2 @ ( dpsetconstr @ X1 @ X2 @ X3 ) )
     => sP46 ) ),
    introduced(definition,[new_symbols(definition,[sP77])]) ).

thf(sP78,plain,
    ( sP78
  <=> ( ! [X1: $i,X2: $i > $o] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( X2 @ X3 ) )
         => ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( X2 @ X3 ) ) )
     => ( ! [X1: $i,X2: $i > $o] :
            ( ~ ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ( X2 @ X3 ) )
           => ~ ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ( X2 @ X3 ) ) )
       => sP57 ) ) ),
    introduced(definition,[new_symbols(definition,[sP78])]) ).

thf(sP79,plain,
    ( sP79
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
         => ( ~ ( in @ X3 @ X1 )
           => ( in @ X3 @ X2 ) ) )
     => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( ( in @ X3 @ X2 )
                 => ( in @ X3 @ ( binintersect @ X1 @ X2 ) ) ) )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( subset @ X3 @ X1 )
                 => ( ( subset @ X3 @ X2 )
                   => ( subset @ X3 @ ( binintersect @ X1 @ X2 ) ) ) )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( in @ X3 @ ( binintersect @ X1 @ X2 ) )
                   => ( in @ X3 @ X1 ) )
               => ( ! [X1: $i,X2: $i] : ( subset @ ( binintersect @ X1 @ X2 ) @ X1 )
                 => sP14 ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP79])]) ).

thf(sP80,plain,
    ( sP80
  <=> ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
          ( ( in @ ( kpair @ X3 @ X4 ) @ ( cartprod @ X1 @ X2 ) )
         => ( in @ X4 @ X2 ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ X1 )
           => ! [X4: $i] :
                ( ( in @ X4 @ X2 )
               => ( ( kpair @ X3 @ X4 )
                  = ( kpair @ X3 @ X4 ) ) ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ X1 )
             => ! [X4: $i] :
                  ( ( in @ X4 @ X2 )
                 => ( ( kfst @ ( kpair @ X3 @ X4 ) )
                    = X3 ) ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( in @ X3 @ X1 )
               => ! [X4: $i] :
                    ( ( in @ X4 @ X2 )
                   => ( ( ksnd @ ( kpair @ X3 @ X4 ) )
                      = X4 ) ) )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
                 => ( ( kpair @ ( kfst @ X3 ) @ ( ksnd @ X3 ) )
                    = X3 ) )
             => ( ! [X1: $i,X2: $i,X3: $i > $i > $o,X4: $i] :
                    ( ( in @ X4 @ X1 )
                   => ! [X5: $i] :
                        ( ( in @ X5 @ X2 )
                       => ( ( X3 @ X4 @ X5 )
                         => ( in @ ( kpair @ X4 @ X5 ) @ ( dpsetconstr @ X1 @ X2 @ X3 ) ) ) ) )
               => ( ! [X1: $i,X2: $i,X3: $i > $i > $o] : ( subset @ ( dpsetconstr @ X1 @ X2 @ X3 ) @ ( cartprod @ X1 @ X2 ) )
                 => sP77 ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP80])]) ).

thf(sP81,plain,
    ( sP81
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ! [X4: $i] :
              ( ( in @ X4 @ X2 )
             => ( ( ksnd @ ( kpair @ X3 @ X4 ) )
                = X4 ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
           => ( ( kpair @ ( kfst @ X3 ) @ ( ksnd @ X3 ) )
              = X3 ) )
       => ( ! [X1: $i,X2: $i,X3: $i > $i > $o,X4: $i] :
              ( ( in @ X4 @ X1 )
             => ! [X5: $i] :
                  ( ( in @ X5 @ X2 )
                 => ( ( X3 @ X4 @ X5 )
                   => ( in @ ( kpair @ X4 @ X5 ) @ ( dpsetconstr @ X1 @ X2 @ X3 ) ) ) ) )
         => ( ! [X1: $i,X2: $i,X3: $i > $i > $o] : ( subset @ ( dpsetconstr @ X1 @ X2 @ X3 ) @ ( cartprod @ X1 @ X2 ) )
           => sP77 ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP81])]) ).

thf(sP82,plain,
    ( sP82
  <=> ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ( ( setunion @ X1 )
            = ( setunion @ X2 ) ) )
     => ( ( omega = omega )
       => sP17 ) ) ),
    introduced(definition,[new_symbols(definition,[sP82])]) ).

thf(sP83,plain,
    ( sP83
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ! [X4: $i] :
              ( ( in @ X4 @ X2 )
             => ( subset @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ ( binunion @ X1 @ X2 ) ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ X1 )
           => ! [X4: $i] :
                ( ( in @ X4 @ X2 )
               => ( in @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ X1 )
             => ! [X4: $i] :
                  ( ( in @ X4 @ X2 )
                 => ( subset @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( in @ X3 @ X1 )
               => ! [X4: $i] :
                    ( ( in @ X4 @ X2 )
                   => ( in @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ! [X4: $i] :
                      ( ( in @ X4 @ X2 )
                     => ( in @ ( kpair @ X3 @ X4 ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ! [X4: $i] :
                        ( ( in @ X4 @ X2 )
                       => ( in @ ( kpair @ X3 @ X4 ) @ ( cartprod @ X1 @ X2 ) ) ) )
               => sP52 ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP83])]) ).

thf(sP84,plain,
    ( sP84
  <=> ( ! [X1: $i,X2: $i > $o] :
          ( ( ex1 @ X1 @ X2 )
         => ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ~ ( X2 @ X3 ) ) )
     => ( ! [X1: $i,X2: $i > $o,X3: $i] :
            ( ( in @ X3 @ X1 )
           => ( ( X2 @ X3 )
             => ( ! [X4: $i] :
                    ( ( in @ X4 @ X1 )
                   => ( ( X2 @ X4 )
                     => ( X4 = X3 ) ) )
               => ( ex1 @ X1 @ X2 ) ) ) )
       => ( ! [X1: $i,X2: $i > $o] :
              ( ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ! [X4: $i] :
                      ( ( in @ X4 @ X1 )
                     => ( ( X2 @ X3 )
                       => ( ( X2 @ X4 )
                         => ( X3 = X4 ) ) ) ) )
             => ( ~ ! [X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ~ ( X2 @ X3 ) )
               => ( ex1 @ X1 @ X2 ) ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( ( setadjoin @ X1 @ emptyset )
                  = ( setadjoin @ X2 @ emptyset ) )
               => ( X1 = X2 ) )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( in @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) )
                 => ( X1 = X3 ) )
             => ( ! [X1: $i] :
                    ( ( iskpair @ X1 )
                   => ( singleton
                      @ ( dsetconstr @ ( setunion @ X1 )
                        @ ^ [X2: $i] : ( in @ ( setadjoin @ X2 @ emptyset ) @ X1 ) ) ) )
               => ( ! [X1: $i] :
                      ( ( singleton @ X1 )
                     => ( in @ ( setunion @ X1 ) @ X1 ) )
                 => sP24 ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP84])]) ).

thf(sP85,plain,
    ( sP85
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ( in @ X3 @ X2 )
           => ( in @ X3 @ ( binintersect @ X1 @ X2 ) ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( subset @ X3 @ X1 )
           => ( ( subset @ X3 @ X2 )
             => ( subset @ X3 @ ( binintersect @ X1 @ X2 ) ) ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ ( binintersect @ X1 @ X2 ) )
             => ( in @ X3 @ X1 ) )
         => ( ! [X1: $i,X2: $i] : ( subset @ ( binintersect @ X1 @ X2 ) @ X1 )
           => sP14 ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP85])]) ).

thf(sP86,plain,
    ( sP86
  <=> ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ X1 )
         => ( in @ ( setadjoin @ X2 @ emptyset ) @ ( powerset @ X1 ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ X1 )
           => ( in @ ( setadjoin @ X3 @ emptyset ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
             => ( ( X3 != X1 )
               => ( X3 = X2 ) ) )
         => sP83 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP86])]) ).

thf(sP87,plain,
    ( sP87
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
         => ( ( X3 != X1 )
           => ( X3 = X2 ) ) )
     => sP83 ) ),
    introduced(definition,[new_symbols(definition,[sP87])]) ).

thf(sP88,plain,
    ( sP88
  <=> ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
          ( ( ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) )
            = ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) )
         => ( X1 = X3 ) )
     => sP1 ) ),
    introduced(definition,[new_symbols(definition,[sP88])]) ).

thf(sP89,plain,
    ( sP89
  <=> ( ! [X1: $i,X2: $i,X3: $i > $i > $o,X4: $i] :
          ( ( in @ X4 @ X1 )
         => ! [X5: $i] :
              ( ( in @ X5 @ X2 )
             => ( ( X3 @ X4 @ X5 )
               => ( in @ ( kpair @ X4 @ X5 ) @ ( dpsetconstr @ X1 @ X2 @ X3 ) ) ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i > $i > $o] : ( subset @ ( dpsetconstr @ X1 @ X2 @ X3 ) @ ( cartprod @ X1 @ X2 ) )
       => sP77 ) ) ),
    introduced(definition,[new_symbols(definition,[sP89])]) ).

thf(sP90,plain,
    ( sP90
  <=> ( ! [X1: $i > $i > $o,X2: $i] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X2 )
             => ( exu @ ( X1 @ X3 ) ) )
         => ~ ! [X3: $i] :
                ~ ! [X4: $i] :
                    ( ( in @ X4 @ X3 )
                    = ( ~ ! [X5: $i] :
                            ( ( in @ X5 @ X2 )
                           => ~ ( X1 @ X5 @ X4 ) ) ) ) )
     => ( ! [X1: $i] :
            ( ~ ! [X2: $i] :
                  ~ ( in @ X2 @ X1 )
           => ~ ! [X2: $i] :
                  ( ( in @ X2 @ X1 )
                 => ~ ! [X3: $i] :
                        ( ( in @ X3 @ X2 )
                       => ~ ( in @ X3 @ X1 ) ) ) )
       => ( ! [X1: $i] :
              ~ ! [X2: $i] :
                  ( ~ ( ~ ( ! [X3: $i] :
                              ( ( in @ X3 @ X2 )
                             => ! [X4: $i] :
                                  ( ( in @ X4 @ X3 )
                                 => ( in @ X4 @ X1 ) ) )
                         => ~ ! [X3: $i,X4: $i] :
                                ( ~ ( ( in @ X3 @ X1 )
                                   => ~ ( in @ X4 @ X1 ) )
                               => ( ! [X5: $i] :
                                      ( ( in @ X5 @ X2 )
                                     => ( ( in @ X3 @ X5 )
                                        = ( in @ X4 @ X5 ) ) )
                                 => ( X3 = X4 ) ) ) )
                     => ~ ! [X3: $i,X4: $i] :
                            ( ~ ( ( in @ X3 @ X2 )
                               => ~ ( in @ X4 @ X2 ) )
                           => ( ~ ! [X5: $i] :
                                    ( ( in @ X5 @ X3 )
                                   => ( in @ X5 @ X4 ) )
                             => ! [X5: $i] :
                                  ( ( in @ X5 @ X4 )
                                 => ( in @ X5 @ X3 ) ) ) ) )
                 => ~ ! [X3: $i] :
                        ( ~ ( ! [X4: $i] :
                                ( ( in @ X4 @ X3 )
                               => ( in @ X4 @ X1 ) )
                           => ! [X4: $i] :
                                ~ ( in @ X4 @ X3 ) )
                       => ~ ! [X4: $i,X5: $i] :
                              ( ~ ( ~ ( ( in @ X4 @ X2 )
                                     => ~ ( in @ X5 @ X3 ) )
                                 => ~ ! [X6: $i] :
                                        ( ( in @ X6 @ X4 )
                                       => ~ ( in @ X6 @ X3 ) ) )
                             => ~ ! [X6: $i] :
                                    ( ( in @ X6 @ X2 )
                                   => ( ~ ! [X7: $i] :
                                            ( ( in @ X7 @ X6 )
                                           => ( in @ X7 @ X4 ) )
                                     => ( in @ X5 @ X6 ) ) ) ) ) )
         => ( ! [X1: $i > $o] :
                ( ( exu @ X1 )
               => ( X1 @ ( descr @ X1 ) ) )
           => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ( ( X2 @ X3 )
                   => ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) ) ) )
             => sP67 ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP90])]) ).

thf(sP91,plain,
    ( sP91
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
         => ( ( X3 != X1 )
           => ( X3 = X2 ) ) )
     => sP23 ) ),
    introduced(definition,[new_symbols(definition,[sP91])]) ).

thf(sP92,plain,
    ( sP92
  <=> ( ! [X1: $i] :
          ( ( subset @ X1 @ emptyset )
         => ( X1 = emptyset ) )
     => sP9 ) ),
    introduced(definition,[new_symbols(definition,[sP92])]) ).

thf(sP93,plain,
    ( sP93
  <=> ( ! [X1: $i,X2: $i] :
          ( ( ksnd @ ( kpair @ X1 @ X2 ) )
          = X2 )
     => ( ! [X1: $i] :
            ( ( iskpair @ X1 )
           => ( ( kpair @ ( kfst @ X1 ) @ ( ksnd @ X1 ) )
              = X1 ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
             => ( in @ ( ksnd @ X3 ) @ X2 ) )
         => ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
                ( ( in @ ( kpair @ X3 @ X4 ) @ ( cartprod @ X1 @ X2 ) )
               => ( in @ X3 @ X1 ) )
           => sP80 ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP93])]) ).

thf(sP94,plain,
    ( sP94
  <=> ( ! [X1: $i] :
          ( ~ ! [X2: $i] :
                ~ ( in @ X2 @ X1 )
         => ~ ! [X2: $i] :
                ( ( in @ X2 @ X1 )
               => ~ ! [X3: $i] :
                      ( ( in @ X3 @ X2 )
                     => ~ ( in @ X3 @ X1 ) ) ) )
     => ( ! [X1: $i] :
            ~ ! [X2: $i] :
                ( ~ ( ~ ( ! [X3: $i] :
                            ( ( in @ X3 @ X2 )
                           => ! [X4: $i] :
                                ( ( in @ X4 @ X3 )
                               => ( in @ X4 @ X1 ) ) )
                       => ~ ! [X3: $i,X4: $i] :
                              ( ~ ( ( in @ X3 @ X1 )
                                 => ~ ( in @ X4 @ X1 ) )
                             => ( ! [X5: $i] :
                                    ( ( in @ X5 @ X2 )
                                   => ( ( in @ X3 @ X5 )
                                      = ( in @ X4 @ X5 ) ) )
                               => ( X3 = X4 ) ) ) )
                   => ~ ! [X3: $i,X4: $i] :
                          ( ~ ( ( in @ X3 @ X2 )
                             => ~ ( in @ X4 @ X2 ) )
                         => ( ~ ! [X5: $i] :
                                  ( ( in @ X5 @ X3 )
                                 => ( in @ X5 @ X4 ) )
                           => ! [X5: $i] :
                                ( ( in @ X5 @ X4 )
                               => ( in @ X5 @ X3 ) ) ) ) )
               => ~ ! [X3: $i] :
                      ( ~ ( ! [X4: $i] :
                              ( ( in @ X4 @ X3 )
                             => ( in @ X4 @ X1 ) )
                         => ! [X4: $i] :
                              ~ ( in @ X4 @ X3 ) )
                     => ~ ! [X4: $i,X5: $i] :
                            ( ~ ( ~ ( ( in @ X4 @ X2 )
                                   => ~ ( in @ X5 @ X3 ) )
                               => ~ ! [X6: $i] :
                                      ( ( in @ X6 @ X4 )
                                     => ~ ( in @ X6 @ X3 ) ) )
                           => ~ ! [X6: $i] :
                                  ( ( in @ X6 @ X2 )
                                 => ( ~ ! [X7: $i] :
                                          ( ( in @ X7 @ X6 )
                                         => ( in @ X7 @ X4 ) )
                                   => ( in @ X5 @ X6 ) ) ) ) ) )
       => ( ! [X1: $i > $o] :
              ( ( exu @ X1 )
             => ( X1 @ ( descr @ X1 ) ) )
         => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( ( X2 @ X3 )
                 => ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) ) ) )
           => sP67 ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP94])]) ).

thf(sP95,plain,
    ( sP95
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( setminus @ X1 @ X2 ) )
         => ~ ( in @ X3 @ X2 ) )
     => sP18 ) ),
    introduced(definition,[new_symbols(definition,[sP95])]) ).

thf(sP96,plain,
    ( sP96
  <=> ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ( subset @ X2 @ X1 ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( X1 = X2 )
           => ( subset @ X1 @ X2 ) )
       => sP50 ) ) ),
    introduced(definition,[new_symbols(definition,[sP96])]) ).

thf(sP97,plain,
    ( sP97
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ( in @ X3 @ X2 )
           => ~ ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
     => sP55 ) ),
    introduced(definition,[new_symbols(definition,[sP97])]) ).

thf(sP98,plain,
    ( sP98
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ! [X4: $i] :
              ( ( in @ X4 @ X2 )
             => ( in @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ X1 )
           => ! [X4: $i] :
                ( ( in @ X4 @ X2 )
               => ( subset @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ X1 )
             => ! [X4: $i] :
                  ( ( in @ X4 @ X2 )
                 => ( in @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( in @ X3 @ X1 )
               => ! [X4: $i] :
                    ( ( in @ X4 @ X2 )
                   => ( in @ ( kpair @ X3 @ X4 ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ! [X4: $i] :
                      ( ( in @ X4 @ X2 )
                     => ( in @ ( kpair @ X3 @ X4 ) @ ( cartprod @ X1 @ X2 ) ) ) )
             => sP52 ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP98])]) ).

thf(sP99,plain,
    ( sP99
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( binintersect @ X1 @ X2 ) )
         => ( in @ X3 @ X2 ) )
     => ( ! [X1: $i,X2: $i] :
            ( ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ~ ( in @ X3 @ X2 ) )
           => ( ( binintersect @ X1 @ X2 )
              = emptyset ) )
       => sP44 ) ) ),
    introduced(definition,[new_symbols(definition,[sP99])]) ).

thf(sP100,plain,
    ( sP100
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
         => ( ( kpair @ ( kfst @ X3 ) @ ( ksnd @ X3 ) )
            = X3 ) )
     => sP89 ) ),
    introduced(definition,[new_symbols(definition,[sP100])]) ).

thf(sP101,plain,
    ( sP101
  <=> ( ! [X1: $i,X2: $i > $o,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ( X2 @ X3 )
           => ( ! [X4: $i] :
                  ( ( in @ X4 @ X1 )
                 => ( ( X2 @ X4 )
                   => ( X4 = X3 ) ) )
             => ( ex1 @ X1 @ X2 ) ) ) )
     => ( ! [X1: $i,X2: $i > $o] :
            ( ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ! [X4: $i] :
                    ( ( in @ X4 @ X1 )
                   => ( ( X2 @ X3 )
                     => ( ( X2 @ X4 )
                       => ( X3 = X4 ) ) ) ) )
           => ( ~ ! [X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ~ ( X2 @ X3 ) )
             => ( ex1 @ X1 @ X2 ) ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( ( setadjoin @ X1 @ emptyset )
                = ( setadjoin @ X2 @ emptyset ) )
             => ( X1 = X2 ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( in @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) )
               => ( X1 = X3 ) )
           => ( ! [X1: $i] :
                  ( ( iskpair @ X1 )
                 => ( singleton
                    @ ( dsetconstr @ ( setunion @ X1 )
                      @ ^ [X2: $i] : ( in @ ( setadjoin @ X2 @ emptyset ) @ X1 ) ) ) )
             => ( ! [X1: $i] :
                    ( ( singleton @ X1 )
                   => ( in @ ( setunion @ X1 ) @ X1 ) )
               => sP24 ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP101])]) ).

thf(sP102,plain,
    ( sP102
  <=> ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ ( powerset @ X1 ) )
         => ( subset @ X2 @ X1 ) )
     => sP58 ) ),
    introduced(definition,[new_symbols(definition,[sP102])]) ).

thf(sP103,plain,
    ( sP103
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ X2 )
             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
         => sP39 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP103])]) ).

thf(sP104,plain,
    ( sP104
  <=> ( ! [X1: $i,X2: $i,X3: $i > $i > $o,X4: $i,X5: $i] :
          ( ( in @ ( kpair @ X4 @ X5 ) @ ( dpsetconstr @ X1 @ X2 @ X3 ) )
         => ( in @ X4 @ X1 ) )
     => sP51 ) ),
    introduced(definition,[new_symbols(definition,[sP104])]) ).

thf(sP105,plain,
    ( sP105
  <=> ( ! [X1: $i] :
          ( ( in @ X1 @ omega )
         => ( in @ ( setadjoin @ X1 @ X1 ) @ omega ) )
     => ( ! [X1: $i] :
            ( ~ ( ( in @ emptyset @ X1 )
               => ~ ! [X2: $i] :
                      ( ~ ( ( in @ X2 @ omega )
                         => ~ ( in @ X2 @ X1 ) )
                     => ( in @ ( setadjoin @ X2 @ X2 ) @ X1 ) ) )
           => ! [X2: $i] :
                ( ( in @ X2 @ omega )
               => ( in @ X2 @ X1 ) ) )
       => sP90 ) ) ),
    introduced(definition,[new_symbols(definition,[sP105])]) ).

thf(sP106,plain,
    ( sP106
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ! [X4: $i] :
              ( ( in @ X4 @ X2 )
             => ( in @ ( kpair @ X3 @ X4 ) @ ( cartprod @ X1 @ X2 ) ) ) )
     => sP52 ) ),
    introduced(definition,[new_symbols(definition,[sP106])]) ).

thf(sP107,plain,
    ( sP107
  <=> ( ! [X1: $i] :
          ( ( singleton @ X1 )
         => ( in @ ( setunion @ X1 ) @ X1 ) )
     => sP24 ) ),
    introduced(definition,[new_symbols(definition,[sP107])]) ).

thf(sP108,plain,
    ( sP108
  <=> ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ ( setunion @ X1 ) )
          = ( ~ ! [X3: $i] :
                  ( ( in @ X2 @ X3 )
                 => ~ ( in @ X3 @ X1 ) ) ) )
     => ( ( in @ emptyset @ omega )
       => sP105 ) ) ),
    introduced(definition,[new_symbols(definition,[sP108])]) ).

thf(sP109,plain,
    ( sP109
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( setminus @ X1 @ X2 ) )
         => ( in @ X3 @ X1 ) )
     => sP95 ) ),
    introduced(definition,[new_symbols(definition,[sP109])]) ).

thf(sP110,plain,
    ( sP110
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ~ ( in @ X3 @ X1 )
         => ( ( in @ X3 @ X2 )
           => ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
     => sP97 ) ),
    introduced(definition,[new_symbols(definition,[sP110])]) ).

thf(sP111,plain,
    ( sP111
  <=> ( ( in @ emptyset @ omega )
     => sP105 ) ),
    introduced(definition,[new_symbols(definition,[sP111])]) ).

thf(sP112,plain,
    ( sP112
  <=> ( ! [X1: $i > $o,X2: $i] :
          ( ( in @ X2 @ emptyset )
         => ( X1 @ X2 ) )
     => ( ! [X1: $i,X2: $i > $o] :
            ( ~ ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ( X2 @ X3 ) )
           => ~ ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ( X2 @ X3 ) ) )
       => ( ! [X1: $i,X2: $i > $o] :
              ( ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ~ ( X2 @ X3 ) )
             => ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ~ ( X2 @ X3 ) ) )
         => ( ! [X1: $i,X2: $i > $o] :
                ( ! [X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ~ ( X2 @ X3 ) )
               => ! [X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ~ ( X2 @ X3 ) ) )
           => ( ! [X1: $i,X2: $i > $o] :
                  ( ~ ! [X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ( X2 @ X3 ) )
                 => ~ ! [X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ( X2 @ X3 ) ) )
             => ( ! [X1: $o] :
                    ( X1
                   => ( in @ emptyset @ ( prop2set @ X1 ) ) )
               => ( ! [X1: $o] :
                      ( X1
                     => ( set2prop @ ( prop2set @ X1 ) ) )
                 => sP78 ) ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP112])]) ).

thf(sP113,plain,
    ( sP113
  <=> ( ! [X1: $i,X2: $i > $o] :
          ( ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( X2 @ X3 ) )
         => ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( X2 @ X3 ) ) )
     => ( ! [X1: $o] :
            ( X1
           => ( in @ emptyset @ ( prop2set @ X1 ) ) )
       => ( ! [X1: $o] :
              ( X1
             => ( set2prop @ ( prop2set @ X1 ) ) )
         => sP78 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP113])]) ).

thf(sP114,plain,
    ( sP114
  <=> ( ! [X1: $i,X2: $i > $o] :
          ( ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( X2 @ X3 ) )
         => ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( X2 @ X3 ) ) )
     => ( ! [X1: $i,X2: $i > $o] :
            ( ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ~ ( X2 @ X3 ) )
           => ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ~ ( X2 @ X3 ) ) )
       => ( ! [X1: $i,X2: $i > $o] :
              ( ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ~ ( X2 @ X3 ) )
             => ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ~ ( X2 @ X3 ) ) )
         => sP113 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP114])]) ).

thf(sP115,plain,
    ( sP115
  <=> ( ! [X1: $i,X2: $i > $o] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ! [X4: $i] :
                  ( ( in @ X4 @ X1 )
                 => ( ( X2 @ X3 )
                   => ( ( X2 @ X4 )
                     => ( X3 = X4 ) ) ) ) )
         => ( ~ ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ~ ( X2 @ X3 ) )
           => ( ex1 @ X1 @ X2 ) ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( ( setadjoin @ X1 @ emptyset )
              = ( setadjoin @ X2 @ emptyset ) )
           => ( X1 = X2 ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) )
             => ( X1 = X3 ) )
         => ( ! [X1: $i] :
                ( ( iskpair @ X1 )
               => ( singleton
                  @ ( dsetconstr @ ( setunion @ X1 )
                    @ ^ [X2: $i] : ( in @ ( setadjoin @ X2 @ emptyset ) @ X1 ) ) ) )
           => sP107 ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP115])]) ).

thf(sP116,plain,
    ( sP116
  <=> ( ! [X1: $i > $o] :
          ( ( exu @ X1 )
         => ! [X2: $i,X3: $i] :
              ( ( X1 @ X2 )
             => ( ( X1 @ X3 )
               => ( X2 = X3 ) ) ) )
     => ( ! [X1: $i > $o,X2: $i > $o] :
            ( ! [X3: $i,X4: $i] :
                ( ( X3 = X4 )
               => ( ( X1 @ X3 )
                  = ( X2 @ X4 ) ) )
           => ( ( exu @ X1 )
              = ( exu @ X2 ) ) )
       => sP6 ) ) ),
    introduced(definition,[new_symbols(definition,[sP116])]) ).

thf(sP117,plain,
    ( sP117
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X2 )
         => ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) ) )
     => ( ! [X1: $i,X2: $i] : ( subset @ ( setminus @ X1 @ X2 ) @ X1 )
       => sP54 ) ) ),
    introduced(definition,[new_symbols(definition,[sP117])]) ).

thf(sP118,plain,
    ( sP118
  <=> ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
     => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
       => sP47 ) ) ),
    introduced(definition,[new_symbols(definition,[sP118])]) ).

thf(sP119,plain,
    ( sP119
  <=> ( ! [X1: $i,X2: $i] :
          ( ~ ( subset @ X1 @ X2 )
         => ( X1 != X2 ) )
     => sP64 ) ),
    introduced(definition,[new_symbols(definition,[sP119])]) ).

thf(sP120,plain,
    ( sP120
  <=> ( ! [X1: $i,X2: $i] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( in @ X3 @ X2 ) )
         => ( ( binintersect @ X1 @ X2 )
            = emptyset ) )
     => sP44 ) ),
    introduced(definition,[new_symbols(definition,[sP120])]) ).

thf(sP121,plain,
    ( sP121
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) )
            = ( setadjoin @ X3 @ emptyset ) )
         => ( X1 = X2 ) )
     => sP41 ) ),
    introduced(definition,[new_symbols(definition,[sP121])]) ).

thf(sP122,plain,
    ( sP122
  <=> ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
     => sP85 ) ),
    introduced(definition,[new_symbols(definition,[sP122])]) ).

thf(sP123,plain,
    ( sP123
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) )
         => ( ( in @ X3 @ X1 )
           => ( in @ X3 @ X2 ) ) )
     => sP25 ) ),
    introduced(definition,[new_symbols(definition,[sP123])]) ).

thf(sP124,plain,
    ( sP124
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ~ ( in @ X3 @ X2 )
           => ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) )
     => sP110 ) ),
    introduced(definition,[new_symbols(definition,[sP124])]) ).

thf(sP125,plain,
    ( sP125
  <=> ( ! [X1: $i] :
          ~ ! [X2: $i] :
              ( ~ ( ~ ( ! [X3: $i] :
                          ( ( in @ X3 @ X2 )
                         => ! [X4: $i] :
                              ( ( in @ X4 @ X3 )
                             => ( in @ X4 @ X1 ) ) )
                     => ~ ! [X3: $i,X4: $i] :
                            ( ~ ( ( in @ X3 @ X1 )
                               => ~ ( in @ X4 @ X1 ) )
                           => ( ! [X5: $i] :
                                  ( ( in @ X5 @ X2 )
                                 => ( ( in @ X3 @ X5 )
                                    = ( in @ X4 @ X5 ) ) )
                             => ( X3 = X4 ) ) ) )
                 => ~ ! [X3: $i,X4: $i] :
                        ( ~ ( ( in @ X3 @ X2 )
                           => ~ ( in @ X4 @ X2 ) )
                       => ( ~ ! [X5: $i] :
                                ( ( in @ X5 @ X3 )
                               => ( in @ X5 @ X4 ) )
                         => ! [X5: $i] :
                              ( ( in @ X5 @ X4 )
                             => ( in @ X5 @ X3 ) ) ) ) )
             => ~ ! [X3: $i] :
                    ( ~ ( ! [X4: $i] :
                            ( ( in @ X4 @ X3 )
                           => ( in @ X4 @ X1 ) )
                       => ! [X4: $i] :
                            ~ ( in @ X4 @ X3 ) )
                   => ~ ! [X4: $i,X5: $i] :
                          ( ~ ( ~ ( ( in @ X4 @ X2 )
                                 => ~ ( in @ X5 @ X3 ) )
                             => ~ ! [X6: $i] :
                                    ( ( in @ X6 @ X4 )
                                   => ~ ( in @ X6 @ X3 ) ) )
                         => ~ ! [X6: $i] :
                                ( ( in @ X6 @ X2 )
                               => ( ~ ! [X7: $i] :
                                        ( ( in @ X7 @ X6 )
                                       => ( in @ X7 @ X4 ) )
                                 => ( in @ X5 @ X6 ) ) ) ) ) )
     => ( ! [X1: $i > $o] :
            ( ( exu @ X1 )
           => ( X1 @ ( descr @ X1 ) ) )
       => ( ! [X1: $i,X2: $i > $o,X3: $i] :
              ( ( in @ X3 @ X1 )
             => ( ( X2 @ X3 )
               => ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) ) ) )
         => sP67 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP125])]) ).

thf(sP126,plain,
    ( sP126
  <=> ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
     => ( ! [X1: $i,X2: $i > $o] :
            ( ~ ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ~ ( X2 @ X3 ) )
           => ( ( dsetconstr @ X1 @ X2 )
             != emptyset ) )
       => sP112 ) ) ),
    introduced(definition,[new_symbols(definition,[sP126])]) ).

thf(sP127,plain,
    ( sP127
  <=> ( ! [X1: $i,X2: $i,X3: $i > $i > $o] : ( subset @ ( dpsetconstr @ X1 @ X2 @ X3 ) @ ( cartprod @ X1 @ X2 ) )
     => sP77 ) ),
    introduced(definition,[new_symbols(definition,[sP127])]) ).

thf(sP128,plain,
    ( sP128
  <=> ( ! [X1: $i] :
          ~ ( in @ X1 @ emptyset )
     => sP35 ) ),
    introduced(definition,[new_symbols(definition,[sP128])]) ).

thf(sP129,plain,
    ( sP129
  <=> ( ( omega = omega )
     => sP17 ) ),
    introduced(definition,[new_symbols(definition,[sP129])]) ).

thf(sP130,plain,
    ( sP130
  <=> ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
          ( ( in @ ( kpair @ X3 @ X4 ) @ ( cartprod @ X1 @ X2 ) )
         => ( in @ X3 @ X1 ) )
     => sP80 ) ),
    introduced(definition,[new_symbols(definition,[sP130])]) ).

thf(sP131,plain,
    ( sP131
  <=> ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
     => sP47 ) ),
    introduced(definition,[new_symbols(definition,[sP131])]) ).

thf(sP132,plain,
    ( sP132
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ! [X4: $i] :
              ( ( in @ X4 @ X2 )
             => ( ( kfst @ ( kpair @ X3 @ X4 ) )
                = X3 ) ) )
     => sP81 ) ),
    introduced(definition,[new_symbols(definition,[sP132])]) ).

thf(sP133,plain,
    ( sP133
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ! [X4: $i] :
              ( ( in @ X4 @ X2 )
             => ( subset @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ X1 )
           => ! [X4: $i] :
                ( ( in @ X4 @ X2 )
               => ( in @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ X1 )
             => ! [X4: $i] :
                  ( ( in @ X4 @ X2 )
                 => ( in @ ( kpair @ X3 @ X4 ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
         => sP106 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP133])]) ).

thf(sP134,plain,
    ( sP134
  <=> ( ! [X1: $i > $o] :
          ( ( exu @ X1 )
         => ( X1 @ ( descr @ X1 ) ) )
     => ( ! [X1: $i,X2: $i > $o,X3: $i] :
            ( ( in @ X3 @ X1 )
           => ( ( X2 @ X3 )
             => ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) ) ) )
       => sP67 ) ) ),
    introduced(definition,[new_symbols(definition,[sP134])]) ).

thf(sP135,plain,
    ( sP135
  <=> ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ X1 )
         => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
     => ( ! [X1: $i > $o] :
            ( ( exu @ X1 )
           => ~ ! [X2: $i] :
                  ~ ! [X3: $i] :
                      ( ( X1 @ X3 )
                      = ( X3 = X2 ) ) )
       => ( ! [X1: $i] :
              ( ( nonempty @ X1 )
             => ~ ! [X2: $i] :
                    ~ ( in @ X2 @ X1 ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
               => ( X1 = X2 ) )
           => sP60 ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP135])]) ).

thf(sP136,plain,
    ( sP136
  <=> ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ ( setunion @ X1 ) )
         => ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ~ ( in @ X2 @ X3 ) ) )
     => sP21 ) ),
    introduced(definition,[new_symbols(definition,[sP136])]) ).

thf(sP137,plain,
    ( sP137
  <=> ( ! [X1: $i,X2: $i] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
              = ( in @ X3 @ X2 ) )
         => ( X1 = X2 ) )
     => sP128 ) ),
    introduced(definition,[new_symbols(definition,[sP137])]) ).

thf(sP138,plain,
    ( sP138
  <=> ( ! [X1: $i] :
          ( ( nonempty @ X1 )
         => ~ ! [X2: $i] :
                ~ ( in @ X2 @ X1 ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
           => ( X1 = X2 ) )
       => sP60 ) ) ),
    introduced(definition,[new_symbols(definition,[sP138])]) ).

thf(sP139,plain,
    ( sP139
  <=> ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ! [X3: $i,X4: $i] :
              ( ( X3 = X4 )
             => ( ( setadjoin @ X1 @ X3 )
                = ( setadjoin @ X2 @ X4 ) ) ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( X1 = X2 )
           => ( ( powerset @ X1 )
              = ( powerset @ X2 ) ) )
       => sP82 ) ) ),
    introduced(definition,[new_symbols(definition,[sP139])]) ).

thf(sP140,plain,
    ( sP140
  <=> ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ! [X3: $i,X4: $i] :
              ( ( X3 = X4 )
             => ( ( in @ X3 @ X1 )
               => ( in @ X4 @ X2 ) ) ) )
     => sP36 ) ),
    introduced(definition,[new_symbols(definition,[sP140])]) ).

thf(sP141,plain,
    ( sP141
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) )
         => ( X1 = X3 ) )
     => ( ! [X1: $i] :
            ( ( iskpair @ X1 )
           => ( singleton
              @ ( dsetconstr @ ( setunion @ X1 )
                @ ^ [X2: $i] : ( in @ ( setadjoin @ X2 @ emptyset ) @ X1 ) ) ) )
       => sP107 ) ) ),
    introduced(definition,[new_symbols(definition,[sP141])]) ).

thf(sP142,plain,
    ( sP142
  <=> ( ! [X1: $i > $o,X2: $i > $o] :
          ( ! [X3: $i,X4: $i] :
              ( ( X3 = X4 )
             => ( ( X1 @ X3 )
                = ( X2 @ X4 ) ) )
         => ( ( exu @ X1 )
            = ( exu @ X2 ) ) )
     => sP6 ) ),
    introduced(definition,[new_symbols(definition,[sP142])]) ).

thf(sP143,plain,
    ( sP143
  <=> ! [X1: $i,X2: $i] :
        ( ( in @ X2
          @ ( dsetconstr @ ( powerset @ ( cartprod @ eigen__0 @ X1 ) )
            @ ^ [X3: $i] :
                ~ ( ( breln @ eigen__0 @ X1 @ X3 )
                 => ~ ! [X4: $i] :
                        ( ( in @ X4 @ eigen__0 )
                       => ( ex1 @ X1
                          @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) ) ) ) )
       => ~ ( ( breln @ eigen__0 @ X1 @ X2 )
           => ~ ! [X3: $i] :
                  ( ( in @ X3 @ eigen__0 )
                 => ( ex1 @ X1
                    @ ^ [X4: $i] : ( in @ ( kpair @ X3 @ X4 ) @ X2 ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP143])]) ).

thf(sP144,plain,
    ( sP144
  <=> ! [X1: $i > $o,X2: $i] :
        ( ( in @ X2 @ ( dsetconstr @ ( powerset @ ( cartprod @ eigen__0 @ eigen__1 ) ) @ X1 ) )
       => ( X1 @ X2 ) ) ),
    introduced(definition,[new_symbols(definition,[sP144])]) ).

thf(sP145,plain,
    ( sP145
  <=> ( ! [X1: $i] :
          ( ! [X2: $i] :
              ~ ( in @ X2 @ X1 )
         => ( X1 = emptyset ) )
     => sP16 ) ),
    introduced(definition,[new_symbols(definition,[sP145])]) ).

thf(sP146,plain,
    ( sP146
  <=> ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
     => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
       => sP59 ) ) ),
    introduced(definition,[new_symbols(definition,[sP146])]) ).

thf(sP147,plain,
    ( sP147
  <=> ( ! [X1: $i] :
          ( ( iskpair @ X1 )
         => ( singleton
            @ ( dsetconstr @ ( setunion @ X1 )
              @ ^ [X2: $i] : ( in @ ( setadjoin @ X2 @ emptyset ) @ X1 ) ) ) )
     => sP107 ) ),
    introduced(definition,[new_symbols(definition,[sP147])]) ).

thf(sP148,plain,
    ( sP148
  <=> ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
     => sP122 ) ),
    introduced(definition,[new_symbols(definition,[sP148])]) ).

thf(sP149,plain,
    ( sP149
  <=> ( ! [X1: $i,X2: $i > $o] :
          ( ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ~ ( X2 @ X3 ) )
         => ( ( dsetconstr @ X1 @ X2 )
           != emptyset ) )
     => sP112 ) ),
    introduced(definition,[new_symbols(definition,[sP149])]) ).

thf(sP150,plain,
    ( sP150
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( binintersect @ X1 @ X2 ) )
         => ( in @ X3 @ X1 ) )
     => ( ! [X1: $i,X2: $i] : ( subset @ ( binintersect @ X1 @ X2 ) @ X1 )
       => sP14 ) ) ),
    introduced(definition,[new_symbols(definition,[sP150])]) ).

thf(sP151,plain,
    ( sP151
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
         => ( in @ ( ksnd @ X3 ) @ X2 ) )
     => sP130 ) ),
    introduced(definition,[new_symbols(definition,[sP151])]) ).

thf(sP152,plain,
    ( sP152
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ~ ( in @ X3 @ X1 )
         => ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) ) )
     => sP117 ) ),
    introduced(definition,[new_symbols(definition,[sP152])]) ).

thf(sP153,plain,
    ( sP153
  <=> ( ! [X1: $i] : ( subset @ X1 @ X1 )
     => sP33 ) ),
    introduced(definition,[new_symbols(definition,[sP153])]) ).

thf(sP154,plain,
    ( sP154
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( subset @ X3 @ X1 )
         => ( ( subset @ X3 @ X2 )
           => ( subset @ X3 @ ( binintersect @ X1 @ X2 ) ) ) )
     => sP150 ) ),
    introduced(definition,[new_symbols(definition,[sP154])]) ).

thf(sP155,plain,
    ( sP155
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( subset @ X1 @ X2 )
         => ( ~ ( in @ X3 @ X2 )
           => ~ ( in @ X3 @ X1 ) ) )
     => sP68 ) ),
    introduced(definition,[new_symbols(definition,[sP155])]) ).

thf(sP156,plain,
    ( sP156
  <=> ( ! [X1: $i,X2: $i] : ( subset @ ( binintersect @ X1 @ X2 ) @ X1 )
     => sP14 ) ),
    introduced(definition,[new_symbols(definition,[sP156])]) ).

thf(sP157,plain,
    ( sP157
  <=> ( ! [X1: $i,X2: $i] :
          ( ( subset @ X1 @ X2 )
         => ( in @ X1 @ ( powerset @ X2 ) ) )
     => sP61 ) ),
    introduced(definition,[new_symbols(definition,[sP157])]) ).

thf(sP158,plain,
    ( sP158
  <=> ( ! [X1: $i,X2: $i] :
          ( ( ( binintersect @ X1 @ X2 )
            = X2 )
         => ( subset @ X2 @ X1 ) )
     => sP99 ) ),
    introduced(definition,[new_symbols(definition,[sP158])]) ).

thf(sP159,plain,
    ( sP159
  <=> ( ! [X1: $i,X2: $i] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ( in @ X3 @ X2 ) )
         => ( subset @ X1 @ X2 ) )
     => sP96 ) ),
    introduced(definition,[new_symbols(definition,[sP159])]) ).

thf(sP160,plain,
    ( sP160
  <=> ( ! [X1: $i > $o] :
          ( ( exu @ X1 )
         => ~ ! [X2: $i] :
                ( ( X1 @ X2 )
               => ~ ! [X3: $i] :
                      ( ( X1 @ X3 )
                     => ( X2 = X3 ) ) ) )
     => sP29 ) ),
    introduced(definition,[new_symbols(definition,[sP160])]) ).

thf(sP161,plain,
    ( sP161
  <=> ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( subset @ X1 @ X3 )
           => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
       => sP157 ) ) ),
    introduced(definition,[new_symbols(definition,[sP161])]) ).

thf(sP162,plain,
    ( sP162
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ! [X4: $i] :
              ( ( in @ X4 @ X2 )
             => ( ( kpair @ X3 @ X4 )
                = ( kpair @ X3 @ X4 ) ) ) )
     => sP132 ) ),
    introduced(definition,[new_symbols(definition,[sP162])]) ).

thf(sP163,plain,
    ( sP163
  <=> ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
     => sP59 ) ),
    introduced(definition,[new_symbols(definition,[sP163])]) ).

thf(sP164,plain,
    ( sP164
  <=> ( ! [X1: $i > $o] :
          ( ( exu @ X1 )
         => ~ ! [X2: $i] :
                ~ ! [X3: $i] :
                    ( ( X1 @ X3 )
                    = ( X3 = X2 ) ) )
     => sP138 ) ),
    introduced(definition,[new_symbols(definition,[sP164])]) ).

thf(sP165,plain,
    ( sP165
  <=> ( ! [X1: $i,X2: $i] :
          ( ( subset @ X2 @ X1 )
         => ( ( binintersect @ X1 @ X2 )
            = X2 ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( ( binintersect @ X1 @ X2 )
              = X1 )
           => ( subset @ X1 @ X2 ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( binintersect @ X1 @ ( binunion @ X2 @ X3 ) )
              = ( binunion @ ( binintersect @ X1 @ X2 ) @ ( binintersect @ X1 @ X3 ) ) )
         => sP73 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP165])]) ).

thf(sP166,plain,
    ( sP166
  <=> ( ! [X1: $i,X2: $i] :
          ( ( subset @ X1 @ X2 )
         => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
     => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
       => sP37 ) ) ),
    introduced(definition,[new_symbols(definition,[sP166])]) ).

thf(sP167,plain,
    ( sP167
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ! [X4: $i] :
              ( ( in @ X4 @ X2 )
             => ( in @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ X1 )
           => ! [X4: $i] :
                ( ( in @ X4 @ X2 )
               => ( in @ ( kpair @ X3 @ X4 ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
       => sP106 ) ) ),
    introduced(definition,[new_symbols(definition,[sP167])]) ).

thf(sP168,plain,
    ( sP168
  <=> ( ! [X1: $i] :
          ( ( setunion @ ( setadjoin @ X1 @ emptyset ) )
          = X1 )
     => sP45 ) ),
    introduced(definition,[new_symbols(definition,[sP168])]) ).

thf(sP169,plain,
    ( sP169
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( binintersect @ X1 @ ( binunion @ X2 @ X3 ) )
          = ( binunion @ ( binintersect @ X1 @ X2 ) @ ( binintersect @ X1 @ X3 ) ) )
     => sP73 ) ),
    introduced(definition,[new_symbols(definition,[sP169])]) ).

thf(sP170,plain,
    ( sP170
  <=> ( ! [X1: $i] :
          ( ~ ( ( in @ emptyset @ X1 )
             => ~ ! [X2: $i] :
                    ( ~ ( ( in @ X2 @ omega )
                       => ~ ( in @ X2 @ X1 ) )
                   => ( in @ ( setadjoin @ X2 @ X2 ) @ X1 ) ) )
         => ! [X2: $i] :
              ( ( in @ X2 @ omega )
             => ( in @ X2 @ X1 ) ) )
     => sP90 ) ),
    introduced(definition,[new_symbols(definition,[sP170])]) ).

thf(sP171,plain,
    ( sP171
  <=> ( ! [X1: $i,X2: $i] :
          ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
         => ( X1 = X2 ) )
     => sP60 ) ),
    introduced(definition,[new_symbols(definition,[sP171])]) ).

thf(sP172,plain,
    ( sP172
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ! [X4: $i] :
              ( ( in @ X4 @ X2 )
             => ( in @ ( kpair @ X3 @ X4 ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) )
     => sP106 ) ),
    introduced(definition,[new_symbols(definition,[sP172])]) ).

thf(sP173,plain,
    ( sP173
  <=> ( ! [X1: $i,X2: $i > $o] :
          ( ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( X2 @ X3 ) )
         => ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( X2 @ X3 ) ) )
     => sP57 ) ),
    introduced(definition,[new_symbols(definition,[sP173])]) ).

thf(sP174,plain,
    ( sP174
  <=> ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ( subset @ X1 @ X2 ) )
     => sP50 ) ),
    introduced(definition,[new_symbols(definition,[sP174])]) ).

thf(sP175,plain,
    ( sP175
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( in @ ( setadjoin @ X3 @ emptyset ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) )
     => sP87 ) ),
    introduced(definition,[new_symbols(definition,[sP175])]) ).

thf(sP176,plain,
    ( sP176
  <=> ( ! [X1: $i,X2: $i > $o] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( X2 @ X3 ) )
         => ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( X2 @ X3 ) ) )
     => ( ! [X1: $i,X2: $i > $o] :
            ( ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ~ ( X2 @ X3 ) )
           => ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ~ ( X2 @ X3 ) ) )
       => sP113 ) ) ),
    introduced(definition,[new_symbols(definition,[sP176])]) ).

thf(sP177,plain,
    ( sP177
  <=> ( ! [X1: $o] :
          ( X1
         => ( in @ emptyset @ ( prop2set @ X1 ) ) )
     => ( ! [X1: $o] :
            ( X1
           => ( set2prop @ ( prop2set @ X1 ) ) )
       => sP78 ) ) ),
    introduced(definition,[new_symbols(definition,[sP177])]) ).

thf(sP178,plain,
    ( sP178
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
         => ( ( X3 != X1 )
           => ( in @ X3 @ X2 ) ) )
     => sP31 ) ),
    introduced(definition,[new_symbols(definition,[sP178])]) ).

thf(sP179,plain,
    ( sP179
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X2 )
         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
     => sP39 ) ),
    introduced(definition,[new_symbols(definition,[sP179])]) ).

thf(sP180,plain,
    ( sP180
  <=> ! [X1: $i,X2: $i > $o,X3: $i] :
        ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
       => ( X2 @ X3 ) ) ),
    introduced(definition,[new_symbols(definition,[sP180])]) ).

thf(sP181,plain,
    ( sP181
  <=> ( ! [X1: $i,X2: $i] :
          ( ( ( binintersect @ X1 @ X2 )
            = X1 )
         => ( subset @ X1 @ X2 ) )
     => sP169 ) ),
    introduced(definition,[new_symbols(definition,[sP181])]) ).

thf(sP182,plain,
    ( sP182
  <=> ( ! [X1: $i,X2: $i] : ( iskpair @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) )
     => sP43 ) ),
    introduced(definition,[new_symbols(definition,[sP182])]) ).

thf(sP183,plain,
    ( sP183
  <=> ( ! [X1: $i] :
          ( ( iskpair @ X1 )
         => ( ( kpair @ ( kfst @ X1 ) @ ( ksnd @ X1 ) )
            = X1 ) )
     => sP151 ) ),
    introduced(definition,[new_symbols(definition,[sP183])]) ).

thf(sP184,plain,
    ( sP184
  <=> ( ! [X1: $i] :
          ( ~ ! [X2: $i] :
                ~ ( in @ X2 @ X1 )
         => ( nonempty @ X1 ) )
     => sP146 ) ),
    introduced(definition,[new_symbols(definition,[sP184])]) ).

thf(sP185,plain,
    ( sP185
  <=> ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
     => sP179 ) ),
    introduced(definition,[new_symbols(definition,[sP185])]) ).

thf(sP186,plain,
    ( sP186
  <=> ! [X1: $i,X2: $i,X3: $i] :
        ( ( in @ X3
          @ ( dsetconstr @ ( powerset @ ( cartprod @ X1 @ X2 ) )
            @ ^ [X4: $i] :
                ~ ( ( breln @ X1 @ X2 @ X4 )
                 => ~ ! [X5: $i] :
                        ( ( in @ X5 @ X1 )
                       => ( ex1 @ X2
                          @ ^ [X6: $i] : ( in @ ( kpair @ X5 @ X6 ) @ X4 ) ) ) ) ) )
       => ~ ( ( breln @ X1 @ X2 @ X3 )
           => ~ ! [X4: $i] :
                  ( ( in @ X4 @ X1 )
                 => ( ex1 @ X2
                    @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP186])]) ).

thf(sP187,plain,
    ( sP187
  <=> ( ! [X1: $i,X2: $i > $o,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ( X2 @ X3 )
           => ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) ) ) )
     => sP67 ) ),
    introduced(definition,[new_symbols(definition,[sP187])]) ).

thf(sP188,plain,
    ( sP188
  <=> ( ! [X1: $i,X2: $i > $o] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( X2 @ X3 ) )
         => ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( X2 @ X3 ) ) )
     => sP113 ) ),
    introduced(definition,[new_symbols(definition,[sP188])]) ).

thf(sP189,plain,
    ( sP189
  <=> ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ( ( powerset @ X1 )
            = ( powerset @ X2 ) ) )
     => sP82 ) ),
    introduced(definition,[new_symbols(definition,[sP189])]) ).

thf(sP190,plain,
    ( sP190
  <=> ! [X1: $i] :
        ( ( in @ X1
          @ ( dsetconstr @ ( powerset @ ( cartprod @ eigen__0 @ eigen__1 ) )
            @ ^ [X2: $i] :
                ~ ( ( breln @ eigen__0 @ eigen__1 @ X2 )
                 => ~ ! [X3: $i] :
                        ( ( in @ X3 @ eigen__0 )
                       => ( ex1 @ eigen__1
                          @ ^ [X4: $i] : ( in @ ( kpair @ X3 @ X4 ) @ X2 ) ) ) ) ) )
       => ~ ( ( breln @ eigen__0 @ eigen__1 @ X1 )
           => ~ ! [X2: $i] :
                  ( ( in @ X2 @ eigen__0 )
                 => ( ex1 @ eigen__1
                    @ ^ [X3: $i] : ( in @ ( kpair @ X2 @ X3 ) @ X1 ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP190])]) ).

thf(sP191,plain,
    ( sP191
  <=> ( ! [X1: $i,X2: $i > $o,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ( X2 @ X3 )
           => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
     => sP184 ) ),
    introduced(definition,[new_symbols(definition,[sP191])]) ).

thf(sP192,plain,
    ( sP192
  <=> ( ! [X1: $o] :
          ( X1
         => ( set2prop @ ( prop2set @ X1 ) ) )
     => sP78 ) ),
    introduced(definition,[new_symbols(definition,[sP192])]) ).

thf(sP193,plain,
    ( sP193
  <=> ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( subset @ X1 @ X3 )
         => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
     => sP157 ) ),
    introduced(definition,[new_symbols(definition,[sP193])]) ).

thf(sP194,plain,
    ( sP194
  <=> ( ! [X1: $i,X2: $i] :
          ( ( ( setadjoin @ X1 @ emptyset )
            = ( setadjoin @ X2 @ emptyset ) )
         => ( X1 = X2 ) )
     => sP141 ) ),
    introduced(definition,[new_symbols(definition,[sP194])]) ).

thf(sP195,plain,
    ( sP195
  <=> ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
     => sP37 ) ),
    introduced(definition,[new_symbols(definition,[sP195])]) ).

thf(sP196,plain,
    ( sP196
  <=> ( ! [X1: $i,X2: $i] : ( subset @ ( setminus @ X1 @ X2 ) @ X1 )
     => sP54 ) ),
    introduced(definition,[new_symbols(definition,[sP196])]) ).

thf(def_setextAx,definition,
    ( setextAx
    = ( ! [X1: $i,X2: $i] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
              = ( in @ X3 @ X2 ) )
         => ( X1 = X2 ) ) ) ) ).

thf(def_emptysetAx,definition,
    ( emptysetAx
    = ( ! [X1: $i] :
          ~ ( in @ X1 @ emptyset ) ) ) ).

thf(def_setadjoinAx,definition,
    ( setadjoinAx
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
          = ( ( X3 != X1 )
           => ( in @ X3 @ X2 ) ) ) ) ) ).

thf(def_powersetAx,definition,
    ( powersetAx
    = ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ ( powerset @ X1 ) )
          = ( ! [X3: $i] :
                ( ( in @ X3 @ X2 )
               => ( in @ X3 @ X1 ) ) ) ) ) ) ).

thf(def_setunionAx,definition,
    ( setunionAx
    = ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ ( setunion @ X1 ) )
          = ( ~ ! [X3: $i] :
                  ( ( in @ X2 @ X3 )
                 => ~ ( in @ X3 @ X1 ) ) ) ) ) ) ).

thf(def_omega0Ax,definition,
    ( omega0Ax
    = ( in @ emptyset @ omega ) ) ).

thf(def_omegaSAx,definition,
    ( omegaSAx
    = ( ! [X1: $i] :
          ( ( in @ X1 @ omega )
         => ( in @ ( setadjoin @ X1 @ X1 ) @ omega ) ) ) ) ).

thf(def_omegaIndAx,definition,
    ( omegaIndAx
    = ( ! [X1: $i] :
          ( ~ ( ( in @ emptyset @ X1 )
             => ~ ! [X2: $i] :
                    ( ~ ( ( in @ X2 @ omega )
                       => ~ ( in @ X2 @ X1 ) )
                   => ( in @ ( setadjoin @ X2 @ X2 ) @ X1 ) ) )
         => ! [X2: $i] :
              ( ( in @ X2 @ omega )
             => ( in @ X2 @ X1 ) ) ) ) ) ).

thf(def_replAx,definition,
    ( replAx
    = ( ! [X1: $i > $i > $o,X2: $i] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X2 )
             => ( exu @ ( X1 @ X3 ) ) )
         => ~ ! [X3: $i] :
                ~ ! [X4: $i] :
                    ( ( in @ X4 @ X3 )
                    = ( ~ ! [X5: $i] :
                            ( ( in @ X5 @ X2 )
                           => ~ ( X1 @ X5 @ X4 ) ) ) ) ) ) ) ).

thf(def_foundationAx,definition,
    ( foundationAx
    = ( ! [X1: $i] :
          ( ~ ! [X2: $i] :
                ~ ( in @ X2 @ X1 )
         => ~ ! [X2: $i] :
                ( ( in @ X2 @ X1 )
               => ~ ! [X3: $i] :
                      ( ( in @ X3 @ X2 )
                     => ~ ( in @ X3 @ X1 ) ) ) ) ) ) ).

thf(def_wellorderingAx,definition,
    ( wellorderingAx
    = ( ! [X1: $i] :
          ~ ! [X2: $i] :
              ( ~ ( ~ ( ! [X3: $i] :
                          ( ( in @ X3 @ X2 )
                         => ! [X4: $i] :
                              ( ( in @ X4 @ X3 )
                             => ( in @ X4 @ X1 ) ) )
                     => ~ ! [X3: $i,X4: $i] :
                            ( ~ ( ( in @ X3 @ X1 )
                               => ~ ( in @ X4 @ X1 ) )
                           => ( ! [X5: $i] :
                                  ( ( in @ X5 @ X2 )
                                 => ( ( in @ X3 @ X5 )
                                    = ( in @ X4 @ X5 ) ) )
                             => ( X3 = X4 ) ) ) )
                 => ~ ! [X3: $i,X4: $i] :
                        ( ~ ( ( in @ X3 @ X2 )
                           => ~ ( in @ X4 @ X2 ) )
                       => ( ~ ! [X5: $i] :
                                ( ( in @ X5 @ X3 )
                               => ( in @ X5 @ X4 ) )
                         => ! [X5: $i] :
                              ( ( in @ X5 @ X4 )
                             => ( in @ X5 @ X3 ) ) ) ) )
             => ~ ! [X3: $i] :
                    ( ~ ( ! [X4: $i] :
                            ( ( in @ X4 @ X3 )
                           => ( in @ X4 @ X1 ) )
                       => ! [X4: $i] :
                            ~ ( in @ X4 @ X3 ) )
                   => ~ ! [X4: $i,X5: $i] :
                          ( ~ ( ~ ( ( in @ X4 @ X2 )
                                 => ~ ( in @ X5 @ X3 ) )
                             => ~ ! [X6: $i] :
                                    ( ( in @ X6 @ X4 )
                                   => ~ ( in @ X6 @ X3 ) ) )
                         => ~ ! [X6: $i] :
                                ( ( in @ X6 @ X2 )
                               => ( ~ ! [X7: $i] :
                                        ( ( in @ X7 @ X6 )
                                       => ( in @ X7 @ X4 ) )
                                 => ( in @ X5 @ X6 ) ) ) ) ) ) ) ) ).

thf(def_descrp,definition,
    ( descrp
    = ( ! [X1: $i > $o] :
          ( ( exu @ X1 )
         => ( X1 @ ( descr @ X1 ) ) ) ) ) ).

thf(def_dsetconstrI,definition,
    ( dsetconstrI
    = ( ! [X1: $i,X2: $i > $o,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ( X2 @ X3 )
           => ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) ) ) ) ) ) ).

thf(def_dsetconstrEL,definition,
    ( dsetconstrEL
    = ( ! [X1: $i,X2: $i > $o,X3: $i] :
          ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
         => ( in @ X3 @ X1 ) ) ) ) ).

thf(def_dsetconstrER,definition,
    dsetconstrER = sP180 ).

thf(def_exuE1,definition,
    ( exuE1
    = ( ! [X1: $i > $o] :
          ( ( exu @ X1 )
         => ~ ! [X2: $i] :
                ( ( X1 @ X2 )
               => ~ ! [X3: $i] :
                      ( ( X1 @ X3 )
                     => ( X2 = X3 ) ) ) ) ) ) ).

thf(def_prop2setE,definition,
    ( prop2setE
    = ( ! [X1: $o,X2: $i] :
          ( ( in @ X2 @ ( prop2set @ X1 ) )
         => X1 ) ) ) ).

thf(def_emptysetE,definition,
    ( emptysetE
    = ( ! [X1: $i] :
          ( ( in @ X1 @ emptyset )
         => ! [X2: $o] : X2 ) ) ) ).

thf(def_emptysetimpfalse,definition,
    ( emptysetimpfalse
    = ( ! [X1: $i] :
          ~ ( in @ X1 @ emptyset ) ) ) ).

thf(def_notinemptyset,definition,
    ( notinemptyset
    = ( ! [X1: $i] :
          ~ ( in @ X1 @ emptyset ) ) ) ).

thf(def_exuE3e,definition,
    ( exuE3e
    = ( ! [X1: $i > $o] :
          ( ( exu @ X1 )
         => ~ ! [X2: $i] :
                ~ ( X1 @ X2 ) ) ) ) ).

thf(def_setext,definition,
    ( setext
    = ( ! [X1: $i,X2: $i] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ( in @ X3 @ X2 ) )
         => ( ! [X3: $i] :
                ( ( in @ X3 @ X2 )
               => ( in @ X3 @ X1 ) )
           => ( X1 = X2 ) ) ) ) ) ).

thf(def_emptyI,definition,
    ( emptyI
    = ( ! [X1: $i] :
          ( ! [X2: $i] :
              ~ ( in @ X2 @ X1 )
         => ( X1 = emptyset ) ) ) ) ).

thf(def_noeltsimpempty,definition,
    ( noeltsimpempty
    = ( ! [X1: $i] :
          ( ! [X2: $i] :
              ~ ( in @ X2 @ X1 )
         => ( X1 = emptyset ) ) ) ) ).

thf(def_setbeta,definition,
    ( setbeta
    = ( ! [X1: $i,X2: $i > $o,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
            = ( X2 @ X3 ) ) ) ) ) ).

thf(def_nonemptyE1,definition,
    ( nonemptyE1
    = ( ! [X1: $i] :
          ( ( nonempty @ X1 )
         => ~ ! [X2: $i] :
                ~ ( in @ X2 @ X1 ) ) ) ) ).

thf(def_nonemptyI,definition,
    ( nonemptyI
    = ( ! [X1: $i,X2: $i > $o,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ( X2 @ X3 )
           => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) ) ) ) ).

thf(def_nonemptyI1,definition,
    ( nonemptyI1
    = ( ! [X1: $i] :
          ( ~ ! [X2: $i] :
                ~ ( in @ X2 @ X1 )
         => ( nonempty @ X1 ) ) ) ) ).

thf(def_setadjoinIL,definition,
    ( setadjoinIL
    = ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) ) ) ) ).

thf(def_emptyinunitempty,definition,
    ( emptyinunitempty
    = ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) ) ) ).

thf(def_setadjoinIR,definition,
    ( setadjoinIR
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X2 )
         => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) ) ) ) ).

thf(def_setadjoinE,definition,
    ( setadjoinE
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
         => ! [X4: $o] :
              ( ( ( X3 = X1 )
               => X4 )
             => ( ( ( in @ X3 @ X2 )
                 => X4 )
               => X4 ) ) ) ) ) ).

thf(def_setadjoinOr,definition,
    ( setadjoinOr
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
         => ( ( X3 != X1 )
           => ( in @ X3 @ X2 ) ) ) ) ) ).

thf(def_setoftrueEq,definition,
    ( setoftrueEq
    = ( ! [X1: $i] :
          ( ( dsetconstr @ X1
            @ ^ [X2: $i] : ~ $false )
          = X1 ) ) ) ).

thf(def_powersetI,definition,
    ( powersetI
    = ( ! [X1: $i,X2: $i] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X2 )
             => ( in @ X3 @ X1 ) )
         => ( in @ X2 @ ( powerset @ X1 ) ) ) ) ) ).

thf(def_emptyinPowerset,definition,
    ( emptyinPowerset
    = ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) ) ) ) ).

thf(def_emptyInPowerset,definition,
    ( emptyInPowerset
    = ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) ) ) ) ).

thf(def_powersetE,definition,
    ( powersetE
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X2 @ ( powerset @ X1 ) )
         => ( ( in @ X3 @ X2 )
           => ( in @ X3 @ X1 ) ) ) ) ) ).

thf(def_setunionI,definition,
    ( setunionI
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X2 @ X3 )
         => ( ( in @ X3 @ X1 )
           => ( in @ X2 @ ( setunion @ X1 ) ) ) ) ) ) ).

thf(def_setunionE,definition,
    ( setunionE
    = ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ ( setunion @ X1 ) )
         => ! [X3: $o] :
              ( ! [X4: $i] :
                  ( ( in @ X2 @ X4 )
                 => ( ( in @ X4 @ X1 )
                   => X3 ) )
             => X3 ) ) ) ) ).

thf(def_subPowSU,definition,
    ( subPowSU
    = ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ X1 )
         => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) ) ) ) ).

thf(def_exuE2,definition,
    ( exuE2
    = ( ! [X1: $i > $o] :
          ( ( exu @ X1 )
         => ~ ! [X2: $i] :
                ~ ! [X3: $i] :
                    ( ( X1 @ X3 )
                    = ( X3 = X2 ) ) ) ) ) ).

thf(def_nonemptyImpWitness,definition,
    ( nonemptyImpWitness
    = ( ! [X1: $i] :
          ( ( nonempty @ X1 )
         => ~ ! [X2: $i] :
                ~ ( in @ X2 @ X1 ) ) ) ) ).

thf(def_uniqinunit,definition,
    ( uniqinunit
    = ( ! [X1: $i,X2: $i] :
          ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
         => ( X1 = X2 ) ) ) ) ).

thf(def_notinsingleton,definition,
    ( notinsingleton
    = ( ! [X1: $i,X2: $i] :
          ( ( X1 != X2 )
         => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) ) ) ) ).

thf(def_eqinunit,definition,
    ( eqinunit
    = ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) ) ) ) ).

thf(def_singletonsswitch,definition,
    ( singletonsswitch
    = ( ! [X1: $i,X2: $i] :
          ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
         => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) ) ) ) ).

thf(def_upairsetE,definition,
    ( upairsetE
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
         => ( ( X3 != X1 )
           => ( X3 = X2 ) ) ) ) ) ).

thf(def_upairsetIL,definition,
    ( upairsetIL
    = ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) ) ) ) ).

thf(def_upairsetIR,definition,
    ( upairsetIR
    = ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) ) ) ) ).

thf(def_emptyE1,definition,
    ( emptyE1
    = ( ! [X1: $i,X2: $i > $o] :
          ( ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ~ ( X2 @ X3 ) )
         => ( ( dsetconstr @ X1 @ X2 )
           != emptyset ) ) ) ) ).

thf(def_vacuousDall,definition,
    ( vacuousDall
    = ( ! [X1: $i > $o,X2: $i] :
          ( ( in @ X2 @ emptyset )
         => ( X1 @ X2 ) ) ) ) ).

thf(def_quantDeMorgan1,definition,
    ( quantDeMorgan1
    = ( ! [X1: $i,X2: $i > $o] :
          ( ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( X2 @ X3 ) )
         => ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( X2 @ X3 ) ) ) ) ) ).

thf(def_quantDeMorgan2,definition,
    ( quantDeMorgan2
    = ( ! [X1: $i,X2: $i > $o] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( X2 @ X3 ) )
         => ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( X2 @ X3 ) ) ) ) ) ).

thf(def_quantDeMorgan3,definition,
    ( quantDeMorgan3
    = ( ! [X1: $i,X2: $i > $o] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( X2 @ X3 ) )
         => ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( X2 @ X3 ) ) ) ) ) ).

thf(def_quantDeMorgan4,definition,
    ( quantDeMorgan4
    = ( ! [X1: $i,X2: $i > $o] :
          ( ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( X2 @ X3 ) )
         => ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( X2 @ X3 ) ) ) ) ) ).

thf(def_prop2setI,definition,
    ( prop2setI
    = ( ! [X1: $o] :
          ( X1
         => ( in @ emptyset @ ( prop2set @ X1 ) ) ) ) ) ).

thf(def_prop2set2propI,definition,
    ( prop2set2propI
    = ( ! [X1: $o] :
          ( X1
         => ( set2prop @ ( prop2set @ X1 ) ) ) ) ) ).

thf(def_notdexE,definition,
    ( notdexE
    = ( ! [X1: $i,X2: $i > $o] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( X2 @ X3 ) )
         => ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( X2 @ X3 ) ) ) ) ) ).

thf(def_notdallE,definition,
    ( notdallE
    = ( ! [X1: $i,X2: $i > $o] :
          ( ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( X2 @ X3 ) )
         => ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( X2 @ X3 ) ) ) ) ) ).

thf(def_exuI1,definition,
    ( exuI1
    = ( ! [X1: $i > $o] :
          ( ~ ! [X2: $i] :
                ( ( X1 @ X2 )
               => ~ ! [X3: $i] :
                      ( ( X1 @ X3 )
                     => ( X2 = X3 ) ) )
         => ( exu @ X1 ) ) ) ) ).

thf(def_exuI3,definition,
    ( exuI3
    = ( ! [X1: $i > $o] :
          ( ~ ! [X2: $i] :
                ~ ( X1 @ X2 )
         => ( ! [X2: $i,X3: $i] :
                ( ( X1 @ X2 )
               => ( ( X1 @ X3 )
                 => ( X2 = X3 ) ) )
           => ( exu @ X1 ) ) ) ) ) ).

thf(def_exuI2,definition,
    ( exuI2
    = ( ! [X1: $i > $o] :
          ( ~ ! [X2: $i] :
                ~ ! [X3: $i] :
                    ( ( X1 @ X3 )
                    = ( X3 = X2 ) )
         => ( exu @ X1 ) ) ) ) ).

thf(def_inCongP,definition,
    ( inCongP
    = ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ! [X3: $i,X4: $i] :
              ( ( X3 = X4 )
             => ( ( in @ X3 @ X1 )
               => ( in @ X4 @ X2 ) ) ) ) ) ) ).

thf(def_in__Cong,definition,
    ( in__Cong
    = ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ! [X3: $i,X4: $i] :
              ( ( X3 = X4 )
             => ( ( in @ X3 @ X1 )
                = ( in @ X4 @ X2 ) ) ) ) ) ) ).

thf(def_exuE3u,definition,
    ( exuE3u
    = ( ! [X1: $i > $o] :
          ( ( exu @ X1 )
         => ! [X2: $i,X3: $i] :
              ( ( X1 @ X2 )
             => ( ( X1 @ X3 )
               => ( X2 = X3 ) ) ) ) ) ) ).

thf(def_exu__Cong,definition,
    ( exu__Cong
    = ( ! [X1: $i > $o,X2: $i > $o] :
          ( ! [X3: $i,X4: $i] :
              ( ( X3 = X4 )
             => ( ( X1 @ X3 )
                = ( X2 @ X4 ) ) )
         => ( ( exu @ X1 )
            = ( exu @ X2 ) ) ) ) ) ).

thf(def_emptyset__Cong,definition,
    ( emptyset__Cong
    = ( emptyset = emptyset ) ) ).

thf(def_setadjoin__Cong,definition,
    ( setadjoin__Cong
    = ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ! [X3: $i,X4: $i] :
              ( ( X3 = X4 )
             => ( ( setadjoin @ X1 @ X3 )
                = ( setadjoin @ X2 @ X4 ) ) ) ) ) ) ).

thf(def_powerset__Cong,definition,
    ( powerset__Cong
    = ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ( ( powerset @ X1 )
            = ( powerset @ X2 ) ) ) ) ) ).

thf(def_setunion__Cong,definition,
    ( setunion__Cong
    = ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ( ( setunion @ X1 )
            = ( setunion @ X2 ) ) ) ) ) ).

thf(def_omega__Cong,definition,
    ( omega__Cong
    = ( omega = omega ) ) ).

thf(def_exuEu,definition,
    ( exuEu
    = ( ! [X1: $i > $o] :
          ( ( exu @ X1 )
         => ! [X2: $i,X3: $i] :
              ( ( X1 @ X2 )
             => ( ( X1 @ X3 )
               => ( X2 = X3 ) ) ) ) ) ) ).

thf(def_descr__Cong,definition,
    ( descr__Cong
    = ( ! [X1: $i > $o,X2: $i > $o] :
          ( ! [X3: $i,X4: $i] :
              ( ( X3 = X4 )
             => ( ( X1 @ X3 )
                = ( X2 @ X4 ) ) )
         => ( ( exu @ X1 )
           => ( ( exu @ X2 )
             => ( ( descr @ X1 )
                = ( descr @ X2 ) ) ) ) ) ) ) ).

thf(def_dsetconstr__Cong,definition,
    ( dsetconstr__Cong
    = ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ! [X3: $i > $o,X4: $i > $o] :
              ( ! [X5: $i] :
                  ( ( in @ X5 @ X1 )
                 => ! [X6: $i] :
                      ( ( in @ X6 @ X2 )
                     => ( ( X5 = X6 )
                       => ( ( X3 @ X5 )
                          = ( X4 @ X6 ) ) ) ) )
             => ( ( dsetconstr @ X1 @ X3 )
                = ( dsetconstr @ X2 @ X4 ) ) ) ) ) ) ).

thf(def_subsetI1,definition,
    ( subsetI1
    = ( ! [X1: $i,X2: $i] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ( in @ X3 @ X2 ) )
         => ( subset @ X1 @ X2 ) ) ) ) ).

thf(def_eqimpsubset2,definition,
    ( eqimpsubset2
    = ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ( subset @ X2 @ X1 ) ) ) ) ).

thf(def_eqimpsubset1,definition,
    ( eqimpsubset1
    = ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ( subset @ X1 @ X2 ) ) ) ) ).

thf(def_subsetI2,definition,
    ( subsetI2
    = ( ! [X1: $i,X2: $i] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ( in @ X3 @ X2 ) )
         => ( subset @ X1 @ X2 ) ) ) ) ).

thf(def_emptysetsubset,definition,
    ( emptysetsubset
    = ( !! @ ( subset @ emptyset ) ) ) ).

thf(def_subsetE,definition,
    ( subsetE
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( subset @ X1 @ X2 )
         => ( ( in @ X3 @ X1 )
           => ( in @ X3 @ X2 ) ) ) ) ) ).

thf(def_subsetE2,definition,
    ( subsetE2
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( subset @ X1 @ X2 )
         => ( ~ ( in @ X3 @ X2 )
           => ~ ( in @ X3 @ X1 ) ) ) ) ) ).

thf(def_notsubsetI,definition,
    ( notsubsetI
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ~ ( in @ X3 @ X2 )
           => ~ ( subset @ X1 @ X2 ) ) ) ) ) ).

thf(def_notequalI1,definition,
    ( notequalI1
    = ( ! [X1: $i,X2: $i] :
          ( ~ ( subset @ X1 @ X2 )
         => ( X1 != X2 ) ) ) ) ).

thf(def_notequalI2,definition,
    ( notequalI2
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ~ ( in @ X3 @ X2 )
           => ( X1 != X2 ) ) ) ) ) ).

thf(def_subsetRefl,definition,
    ( subsetRefl
    = ( ! [X1: $i] : ( subset @ X1 @ X1 ) ) ) ).

thf(def_subsetTrans,definition,
    ( subsetTrans
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( subset @ X1 @ X2 )
         => ( ( subset @ X2 @ X3 )
           => ( subset @ X1 @ X3 ) ) ) ) ) ).

thf(def_setadjoinSub,definition,
    ( setadjoinSub
    = ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) ) ) ) ).

thf(def_setadjoinSub2,definition,
    ( setadjoinSub2
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( subset @ X1 @ X3 )
         => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) ) ) ) ).

thf(def_subset2powerset,definition,
    ( subset2powerset
    = ( ! [X1: $i,X2: $i] :
          ( ( subset @ X1 @ X2 )
         => ( in @ X1 @ ( powerset @ X2 ) ) ) ) ) ).

thf(def_setextsub,definition,
    ( setextsub
    = ( ! [X1: $i,X2: $i] :
          ( ( subset @ X1 @ X2 )
         => ( ( subset @ X2 @ X1 )
           => ( X1 = X2 ) ) ) ) ) ).

thf(def_subsetemptysetimpeq,definition,
    ( subsetemptysetimpeq
    = ( ! [X1: $i] :
          ( ( subset @ X1 @ emptyset )
         => ( X1 = emptyset ) ) ) ) ).

thf(def_powersetI1,definition,
    ( powersetI1
    = ( ! [X1: $i,X2: $i] :
          ( ( subset @ X2 @ X1 )
         => ( in @ X2 @ ( powerset @ X1 ) ) ) ) ) ).

thf(def_powersetE1,definition,
    ( powersetE1
    = ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ ( powerset @ X1 ) )
         => ( subset @ X2 @ X1 ) ) ) ) ).

thf(def_inPowerset,definition,
    ( inPowerset
    = ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) ) ) ) ).

thf(def_powersetsubset,definition,
    ( powersetsubset
    = ( ! [X1: $i,X2: $i] :
          ( ( subset @ X1 @ X2 )
         => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) ) ) ) ).

thf(def_sepInPowerset,definition,
    ( sepInPowerset
    = ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) ) ) ) ).

thf(def_sepSubset,definition,
    ( sepSubset
    = ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 ) ) ) ).

thf(def_binunionIL,definition,
    ( binunionIL
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) ) ) ) ).

thf(def_upairset2IR,definition,
    ( upairset2IR
    = ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) ) ) ) ).

thf(def_binunionIR,definition,
    ( binunionIR
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X2 )
         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) ) ) ) ).

thf(def_binunionEcases,definition,
    ( binunionEcases
    = ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
         => ( ( ( in @ X3 @ X1 )
             => X4 )
           => ( ( ( in @ X3 @ X2 )
               => X4 )
             => X4 ) ) ) ) ) ).

thf(def_binunionE,definition,
    ( binunionE
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
         => ( ~ ( in @ X3 @ X1 )
           => ( in @ X3 @ X2 ) ) ) ) ) ).

thf(def_binunionLsub,definition,
    ( binunionLsub
    = ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) ) ) ) ).

thf(def_binunionRsub,definition,
    ( binunionRsub
    = ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) ) ) ) ).

thf(def_binintersectI,definition,
    ( binintersectI
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ( in @ X3 @ X2 )
           => ( in @ X3 @ ( binintersect @ X1 @ X2 ) ) ) ) ) ) ).

thf(def_binintersectSubset5,definition,
    ( binintersectSubset5
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( subset @ X3 @ X1 )
         => ( ( subset @ X3 @ X2 )
           => ( subset @ X3 @ ( binintersect @ X1 @ X2 ) ) ) ) ) ) ).

thf(def_binintersectEL,definition,
    ( binintersectEL
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( binintersect @ X1 @ X2 ) )
         => ( in @ X3 @ X1 ) ) ) ) ).

thf(def_binintersectLsub,definition,
    ( binintersectLsub
    = ( ! [X1: $i,X2: $i] : ( subset @ ( binintersect @ X1 @ X2 ) @ X1 ) ) ) ).

thf(def_binintersectSubset2,definition,
    ( binintersectSubset2
    = ( ! [X1: $i,X2: $i] :
          ( ( subset @ X1 @ X2 )
         => ( ( binintersect @ X1 @ X2 )
            = X1 ) ) ) ) ).

thf(def_binintersectSubset3,definition,
    ( binintersectSubset3
    = ( ! [X1: $i,X2: $i] :
          ( ( ( binintersect @ X1 @ X2 )
            = X2 )
         => ( subset @ X2 @ X1 ) ) ) ) ).

thf(def_binintersectER,definition,
    ( binintersectER
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( binintersect @ X1 @ X2 ) )
         => ( in @ X3 @ X2 ) ) ) ) ).

thf(def_disjointsetsI1,definition,
    ( disjointsetsI1
    = ( ! [X1: $i,X2: $i] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( in @ X3 @ X2 ) )
         => ( ( binintersect @ X1 @ X2 )
            = emptyset ) ) ) ) ).

thf(def_binintersectRsub,definition,
    ( binintersectRsub
    = ( ! [X1: $i,X2: $i] : ( subset @ ( binintersect @ X1 @ X2 ) @ X2 ) ) ) ).

thf(def_binintersectSubset4,definition,
    ( binintersectSubset4
    = ( ! [X1: $i,X2: $i] :
          ( ( subset @ X2 @ X1 )
         => ( ( binintersect @ X1 @ X2 )
            = X2 ) ) ) ) ).

thf(def_binintersectSubset1,definition,
    ( binintersectSubset1
    = ( ! [X1: $i,X2: $i] :
          ( ( ( binintersect @ X1 @ X2 )
            = X1 )
         => ( subset @ X1 @ X2 ) ) ) ) ).

thf(def_bs114d,definition,
    ( bs114d
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( binintersect @ X1 @ ( binunion @ X2 @ X3 ) )
          = ( binunion @ ( binintersect @ X1 @ X2 ) @ ( binintersect @ X1 @ X3 ) ) ) ) ) ).

thf(def_setminusI,definition,
    ( setminusI
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ~ ( in @ X3 @ X2 )
           => ( in @ X3 @ ( setminus @ X1 @ X2 ) ) ) ) ) ) ).

thf(def_setminusEL,definition,
    ( setminusEL
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( setminus @ X1 @ X2 ) )
         => ( in @ X3 @ X1 ) ) ) ) ).

thf(def_setminusER,definition,
    ( setminusER
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( setminus @ X1 @ X2 ) )
         => ~ ( in @ X3 @ X2 ) ) ) ) ).

thf(def_setminusSubset2,definition,
    ( setminusSubset2
    = ( ! [X1: $i,X2: $i] :
          ( ( subset @ X1 @ X2 )
         => ( ( setminus @ X1 @ X2 )
            = emptyset ) ) ) ) ).

thf(def_setminusERneg,definition,
    ( setminusERneg
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) )
         => ( ( in @ X3 @ X1 )
           => ( in @ X3 @ X2 ) ) ) ) ) ).

thf(def_setminusELneg,definition,
    ( setminusELneg
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) )
         => ( ~ ( in @ X3 @ X2 )
           => ~ ( in @ X3 @ X1 ) ) ) ) ) ).

thf(def_setminusILneg,definition,
    ( setminusILneg
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ~ ( in @ X3 @ X1 )
         => ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) ) ) ) ) ).

thf(def_setminusIRneg,definition,
    ( setminusIRneg
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X2 )
         => ~ ( in @ X3 @ ( setminus @ X1 @ X2 ) ) ) ) ) ).

thf(def_setminusLsub,definition,
    ( setminusLsub
    = ( ! [X1: $i,X2: $i] : ( subset @ ( setminus @ X1 @ X2 ) @ X1 ) ) ) ).

thf(def_setminusSubset1,definition,
    ( setminusSubset1
    = ( ! [X1: $i,X2: $i] :
          ( ( ( setminus @ X1 @ X2 )
            = emptyset )
         => ( subset @ X1 @ X2 ) ) ) ) ).

thf(def_symdiffE,definition,
    ( symdiffE
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( symdiff @ X1 @ X2 ) )
         => ! [X4: $o] :
              ( ( ( in @ X3 @ X1 )
               => ( ~ ( in @ X3 @ X2 )
                 => X4 ) )
             => ( ( ~ ( in @ X3 @ X1 )
                 => ( ( in @ X3 @ X2 )
                   => X4 ) )
               => X4 ) ) ) ) ) ).

thf(def_symdiffI1,definition,
    ( symdiffI1
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ~ ( in @ X3 @ X2 )
           => ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) ) ) ) ).

thf(def_symdiffI2,definition,
    ( symdiffI2
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ~ ( in @ X3 @ X1 )
         => ( ( in @ X3 @ X2 )
           => ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) ) ) ) ).

thf(def_symdiffIneg1,definition,
    ( symdiffIneg1
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ( in @ X3 @ X2 )
           => ~ ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) ) ) ) ).

thf(def_symdiffIneg2,definition,
    ( symdiffIneg2
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ~ ( in @ X3 @ X1 )
         => ( ~ ( in @ X3 @ X2 )
           => ~ ( in @ X3 @ ( symdiff @ X1 @ X2 ) ) ) ) ) ) ).

thf(def_secondinupair,definition,
    ( secondinupair
    = ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) ) ) ) ).

thf(def_setukpairIL,definition,
    ( setukpairIL
    = ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setunion @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) ) ) ) ) ).

thf(def_setukpairIR,definition,
    ( setukpairIR
    = ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setunion @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) ) ) ) ) ).

thf(def_kpairiskpair,definition,
    ( kpairiskpair
    = ( ! [X1: $i,X2: $i] : ( iskpair @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) ) ) ) ).

thf(def_kpairp,definition,
    ( kpairp
    = ( ! [X1: $i,X2: $i] : ( iskpair @ ( kpair @ X1 @ X2 ) ) ) ) ).

thf(def_singletonsubset,definition,
    ( singletonsubset
    = ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ X1 )
         => ( subset @ ( setadjoin @ X2 @ emptyset ) @ X1 ) ) ) ) ).

thf(def_singletoninpowerset,definition,
    ( singletoninpowerset
    = ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ X1 )
         => ( in @ ( setadjoin @ X2 @ emptyset ) @ ( powerset @ X1 ) ) ) ) ) ).

thf(def_singletoninpowunion,definition,
    ( singletoninpowunion
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( in @ ( setadjoin @ X3 @ emptyset ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) ) ).

thf(def_upairset2E,definition,
    ( upairset2E
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
         => ( ( X3 != X1 )
           => ( X3 = X2 ) ) ) ) ) ).

thf(def_upairsubunion,definition,
    ( upairsubunion
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ! [X4: $i] :
              ( ( in @ X4 @ X2 )
             => ( subset @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ ( binunion @ X1 @ X2 ) ) ) ) ) ) ).

thf(def_upairinpowunion,definition,
    ( upairinpowunion
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ! [X4: $i] :
              ( ( in @ X4 @ X2 )
             => ( in @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) ) ) ).

thf(def_ubforcartprodlem1,definition,
    ( ubforcartprodlem1
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ! [X4: $i] :
              ( ( in @ X4 @ X2 )
             => ( subset @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) ) ) ).

thf(def_ubforcartprodlem2,definition,
    ( ubforcartprodlem2
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ! [X4: $i] :
              ( ( in @ X4 @ X2 )
             => ( in @ ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) ) ) ) ).

thf(def_ubforcartprodlem3,definition,
    ( ubforcartprodlem3
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ! [X4: $i] :
              ( ( in @ X4 @ X2 )
             => ( in @ ( kpair @ X3 @ X4 ) @ ( powerset @ ( powerset @ ( binunion @ X1 @ X2 ) ) ) ) ) ) ) ) ).

thf(def_cartprodpairin,definition,
    ( cartprodpairin
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ! [X4: $i] :
              ( ( in @ X4 @ X2 )
             => ( in @ ( kpair @ X3 @ X4 ) @ ( cartprod @ X1 @ X2 ) ) ) ) ) ) ).

thf(def_cartprodmempair1,definition,
    ( cartprodmempair1
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
         => ~ ! [X4: $i] :
                ( ( in @ X4 @ X1 )
               => ! [X5: $i] :
                    ( ( in @ X5 @ X2 )
                   => ( X3
                     != ( kpair @ X4 @ X5 ) ) ) ) ) ) ) ).

thf(def_cartprodmempair,definition,
    ( cartprodmempair
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
         => ( iskpair @ X3 ) ) ) ) ).

thf(def_setunionE2,definition,
    ( setunionE2
    = ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ ( setunion @ X1 ) )
         => ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ~ ( in @ X2 @ X3 ) ) ) ) ) ).

thf(def_setunionsingleton1,definition,
    ( setunionsingleton1
    = ( ! [X1: $i] : ( subset @ ( setunion @ ( setadjoin @ X1 @ emptyset ) ) @ X1 ) ) ) ).

thf(def_setunionsingleton2,definition,
    ( setunionsingleton2
    = ( ! [X1: $i] : ( subset @ X1 @ ( setunion @ ( setadjoin @ X1 @ emptyset ) ) ) ) ) ).

thf(def_setunionsingleton,definition,
    ( setunionsingleton
    = ( ! [X1: $i] :
          ( ( setunion @ ( setadjoin @ X1 @ emptyset ) )
          = X1 ) ) ) ).

thf(def_singletonprop,definition,
    ( singletonprop
    = ( ! [X1: $i,X2: $i > $o] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ! [X4: $i] :
                  ( ( in @ X4 @ X1 )
                 => ( ( X2 @ X3 )
                   => ( ( X2 @ X4 )
                     => ( X3 = X4 ) ) ) ) )
         => ( ~ ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ~ ( X2 @ X3 ) )
           => ( singleton @ ( dsetconstr @ X1 @ X2 ) ) ) ) ) ) ).

thf(def_ex1E1,definition,
    ( ex1E1
    = ( ! [X1: $i,X2: $i > $o] :
          ( ( ex1 @ X1 @ X2 )
         => ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ~ ( X2 @ X3 ) ) ) ) ) ).

thf(def_ex1I,definition,
    ( ex1I
    = ( ! [X1: $i,X2: $i > $o,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ( X2 @ X3 )
           => ( ! [X4: $i] :
                  ( ( in @ X4 @ X1 )
                 => ( ( X2 @ X4 )
                   => ( X4 = X3 ) ) )
             => ( ex1 @ X1 @ X2 ) ) ) ) ) ) ).

thf(def_ex1I2,definition,
    ( ex1I2
    = ( ! [X1: $i,X2: $i > $o] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ! [X4: $i] :
                  ( ( in @ X4 @ X1 )
                 => ( ( X2 @ X3 )
                   => ( ( X2 @ X4 )
                     => ( X3 = X4 ) ) ) ) )
         => ( ~ ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ~ ( X2 @ X3 ) )
           => ( ex1 @ X1 @ X2 ) ) ) ) ) ).

thf(def_singletonsuniq,definition,
    ( singletonsuniq
    = ( ! [X1: $i,X2: $i] :
          ( ( ( setadjoin @ X1 @ emptyset )
            = ( setadjoin @ X2 @ emptyset ) )
         => ( X1 = X2 ) ) ) ) ).

thf(def_setukpairinjL1,definition,
    ( setukpairinjL1
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) ) )
         => ( X1 = X3 ) ) ) ) ).

thf(def_kfstsingleton,definition,
    ( kfstsingleton
    = ( ! [X1: $i] :
          ( ( iskpair @ X1 )
         => ( singleton
            @ ( dsetconstr @ ( setunion @ X1 )
              @ ^ [X2: $i] : ( in @ ( setadjoin @ X2 @ emptyset ) @ X1 ) ) ) ) ) ) ).

thf(def_theprop,definition,
    ( theprop
    = ( ! [X1: $i] :
          ( ( singleton @ X1 )
         => ( in @ ( setunion @ X1 ) @ X1 ) ) ) ) ).

thf(def_kfstpairEq,definition,
    ( kfstpairEq
    = ( ! [X1: $i,X2: $i] :
          ( ( kfst @ ( kpair @ X1 @ X2 ) )
          = X1 ) ) ) ).

thf(def_cartprodfstin,definition,
    ( cartprodfstin
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
         => ( in @ ( kfst @ X3 ) @ X1 ) ) ) ) ).

thf(def_setukpairinjL2,definition,
    ( setukpairinjL2
    = ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
          ( ( ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) )
            = ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) )
         => ( X1 = X3 ) ) ) ) ).

thf(def_setukpairinjL,definition,
    ( setukpairinjL
    = ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
          ( ( ( kpair @ X1 @ X2 )
            = ( kpair @ X3 @ X4 ) )
         => ( X1 = X3 ) ) ) ) ).

thf(def_setukpairinjR11,definition,
    ( setukpairinjR11
    = ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ( ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) )
            = ( setadjoin @ X1 @ emptyset ) ) ) ) ) ).

thf(def_setukpairinjR12,definition,
    ( setukpairinjR12
    = ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ( ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) )
            = ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ emptyset ) ) ) ) ) ).

thf(def_setukpairinjR1,definition,
    ( setukpairinjR1
    = ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
          ( ( ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) )
            = ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) )
         => ( ( X3 = X4 )
           => ( X2 = X4 ) ) ) ) ) ).

thf(def_upairequniteq,definition,
    ( upairequniteq
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) )
            = ( setadjoin @ X3 @ emptyset ) )
         => ( X1 = X2 ) ) ) ) ).

thf(def_setukpairinjR2,definition,
    ( setukpairinjR2
    = ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
          ( ( ( setadjoin @ ( setadjoin @ X1 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) @ emptyset ) )
            = ( setadjoin @ ( setadjoin @ X3 @ emptyset ) @ ( setadjoin @ ( setadjoin @ X3 @ ( setadjoin @ X4 @ emptyset ) ) @ emptyset ) ) )
         => ( X2 = X4 ) ) ) ) ).

thf(def_setukpairinjR,definition,
    ( setukpairinjR
    = ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
          ( ( ( kpair @ X1 @ X2 )
            = ( kpair @ X3 @ X4 ) )
         => ( X2 = X4 ) ) ) ) ).

thf(def_ksndsingleton,definition,
    ( ksndsingleton
    = ( ! [X1: $i] :
          ( ( iskpair @ X1 )
         => ( singleton
            @ ( dsetconstr @ ( setunion @ X1 )
              @ ^ [X2: $i] :
                  ( X1
                  = ( kpair @ ( kfst @ X1 ) @ X2 ) ) ) ) ) ) ) ).

thf(def_ksndpairEq,definition,
    ( ksndpairEq
    = ( ! [X1: $i,X2: $i] :
          ( ( ksnd @ ( kpair @ X1 @ X2 ) )
          = X2 ) ) ) ).

thf(def_kpairsurjEq,definition,
    ( kpairsurjEq
    = ( ! [X1: $i] :
          ( ( iskpair @ X1 )
         => ( ( kpair @ ( kfst @ X1 ) @ ( ksnd @ X1 ) )
            = X1 ) ) ) ) ).

thf(def_cartprodsndin,definition,
    ( cartprodsndin
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
         => ( in @ ( ksnd @ X3 ) @ X2 ) ) ) ) ).

thf(def_cartprodpairmemEL,definition,
    ( cartprodpairmemEL
    = ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
          ( ( in @ ( kpair @ X3 @ X4 ) @ ( cartprod @ X1 @ X2 ) )
         => ( in @ X3 @ X1 ) ) ) ) ).

thf(def_cartprodpairmemER,definition,
    ( cartprodpairmemER
    = ( ! [X1: $i,X2: $i,X3: $i,X4: $i] :
          ( ( in @ ( kpair @ X3 @ X4 ) @ ( cartprod @ X1 @ X2 ) )
         => ( in @ X4 @ X2 ) ) ) ) ).

thf(def_cartprodmempaircEq,definition,
    ( cartprodmempaircEq
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ! [X4: $i] :
              ( ( in @ X4 @ X2 )
             => ( ( kpair @ X3 @ X4 )
                = ( kpair @ X3 @ X4 ) ) ) ) ) ) ).

thf(def_cartprodfstpairEq,definition,
    ( cartprodfstpairEq
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ! [X4: $i] :
              ( ( in @ X4 @ X2 )
             => ( ( kfst @ ( kpair @ X3 @ X4 ) )
                = X3 ) ) ) ) ) ).

thf(def_cartprodsndpairEq,definition,
    ( cartprodsndpairEq
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ! [X4: $i] :
              ( ( in @ X4 @ X2 )
             => ( ( ksnd @ ( kpair @ X3 @ X4 ) )
                = X4 ) ) ) ) ) ).

thf(def_cartprodpairsurjEq,definition,
    ( cartprodpairsurjEq
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( cartprod @ X1 @ X2 ) )
         => ( ( kpair @ ( kfst @ X3 ) @ ( ksnd @ X3 ) )
            = X3 ) ) ) ) ).

thf(def_dpsetconstrI,definition,
    ( dpsetconstrI
    = ( ! [X1: $i,X2: $i,X3: $i > $i > $o,X4: $i] :
          ( ( in @ X4 @ X1 )
         => ! [X5: $i] :
              ( ( in @ X5 @ X2 )
             => ( ( X3 @ X4 @ X5 )
               => ( in @ ( kpair @ X4 @ X5 ) @ ( dpsetconstr @ X1 @ X2 @ X3 ) ) ) ) ) ) ) ).

thf(def_dpsetconstrSub,definition,
    ( dpsetconstrSub
    = ( ! [X1: $i,X2: $i,X3: $i > $i > $o] : ( subset @ ( dpsetconstr @ X1 @ X2 @ X3 ) @ ( cartprod @ X1 @ X2 ) ) ) ) ).

thf(def_setOfPairsIsBReln,definition,
    ( setOfPairsIsBReln
    = ( ! [X1: $i,X2: $i,X3: $i > $i > $o] : ( breln @ X1 @ X2 @ ( dpsetconstr @ X1 @ X2 @ X3 ) ) ) ) ).

thf(def_dpsetconstrERa,definition,
    ( dpsetconstrERa
    = ( ! [X1: $i,X2: $i,X3: $i > $i > $o,X4: $i] :
          ( ( in @ X4 @ X1 )
         => ! [X5: $i] :
              ( ( in @ X5 @ X2 )
             => ( ( in @ ( kpair @ X4 @ X5 ) @ ( dpsetconstr @ X1 @ X2 @ X3 ) )
               => ( X3 @ X4 @ X5 ) ) ) ) ) ) ).

thf(def_dpsetconstrEL1,definition,
    ( dpsetconstrEL1
    = ( ! [X1: $i,X2: $i,X3: $i > $i > $o,X4: $i,X5: $i] :
          ( ( in @ ( kpair @ X4 @ X5 ) @ ( dpsetconstr @ X1 @ X2 @ X3 ) )
         => ( in @ X4 @ X1 ) ) ) ) ).

thf(def_dpsetconstrEL2,definition,
    ( dpsetconstrEL2
    = ( ! [X1: $i,X2: $i,X3: $i > $i > $o,X4: $i,X5: $i] :
          ( ( in @ ( kpair @ X4 @ X5 ) @ ( dpsetconstr @ X1 @ X2 @ X3 ) )
         => ( in @ X5 @ X2 ) ) ) ) ).

thf(def_dpsetconstrER,definition,
    ( dpsetconstrER
    = ( ! [X1: $i,X2: $i,X3: $i > $i > $o,X4: $i,X5: $i] :
          ( ( in @ ( kpair @ X4 @ X5 ) @ ( dpsetconstr @ X1 @ X2 @ X3 ) )
         => ( X3 @ X4 @ X5 ) ) ) ) ).

thf(def_func,definition,
    ( func
    = ( ^ [X1: $i,X2: $i,X3: $i] :
          ~ ( ( breln @ X1 @ X2 @ X3 )
           => ~ ! [X4: $i] :
                  ( ( in @ X4 @ X1 )
                 => ( ex1 @ X2
                    @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) ) ) ) ) ).

thf(def_funcSet,definition,
    ( funcSet
    = ( ^ [X1: $i,X2: $i] : ( dsetconstr @ ( powerset @ ( cartprod @ X1 @ X2 ) ) @ ( func @ X1 @ X2 ) ) ) ) ).

thf(def_funcImageSingleton,definition,
    ( funcImageSingleton
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( func @ X1 @ X2 @ X3 )
         => ! [X4: $i] :
              ( ( in @ X4 @ X1 )
             => ( singleton
                @ ( dsetconstr @ X2
                  @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) ) ) ) ) ) ).

thf(def_apProp,definition,
    ( apProp
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( func @ X1 @ X2 @ X3 )
         => ! [X4: $i] :
              ( ( in @ X4 @ X1 )
             => ( in
                @ ( setunion
                  @ ( dsetconstr @ X2
                    @ ^ [X5: $i] : ( in @ ( kpair @ X4 @ X5 ) @ X3 ) ) )
                @ X2 ) ) ) ) ) ).

thf(def_app,definition,
    ( app
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( func @ X1 @ X2 @ X3 )
         => ! [X4: $i] :
              ( ( in @ X4 @ X1 )
             => ( in @ ( ap @ X1 @ X2 @ X3 @ X4 ) @ X2 ) ) ) ) ) ).

thf(infuncsetfunc,conjecture,
    sP137 ).

thf(h1,negated_conjecture,
    ~ sP137,
    inference(assume_negation,[status(cth)],[infuncsetfunc]) ).

thf(1,plain,
    ( ~ sP180
    | sP144 ),
    inference(all_rule,[status(thm)],]) ).

thf(2,plain,
    ( ~ sP144
    | sP190 ),
    inference(all_rule,[status(thm)],]) ).

thf(3,plain,
    ( sP143
    | ~ sP190 ),
    inference(eigen_choice_rule,[status(thm),assumptions([h0])],[h0,eigendef_eigen__1]) ).

thf(4,plain,
    ( sP186
    | ~ sP143 ),
    inference(eigen_choice_rule,[status(thm),assumptions([h0])],[h0,eigendef_eigen__0]) ).

thf(5,plain,
    ( sP7
    | ~ sP186 ),
    inference(prop_rule,[status(thm)],]) ).

thf(6,plain,
    ( sP34
    | ~ sP7 ),
    inference(prop_rule,[status(thm)],]) ).

thf(7,plain,
    ( sP15
    | ~ sP34 ),
    inference(prop_rule,[status(thm)],]) ).

thf(8,plain,
    ( sP20
    | ~ sP15 ),
    inference(prop_rule,[status(thm)],]) ).

thf(9,plain,
    ( sP51
    | ~ sP20 ),
    inference(prop_rule,[status(thm)],]) ).

thf(10,plain,
    ( sP104
    | ~ sP51 ),
    inference(prop_rule,[status(thm)],]) ).

thf(11,plain,
    ( sP46
    | ~ sP104 ),
    inference(prop_rule,[status(thm)],]) ).

thf(12,plain,
    ( sP77
    | ~ sP46 ),
    inference(prop_rule,[status(thm)],]) ).

thf(13,plain,
    ( sP127
    | ~ sP77 ),
    inference(prop_rule,[status(thm)],]) ).

thf(14,plain,
    ( sP89
    | ~ sP127 ),
    inference(prop_rule,[status(thm)],]) ).

thf(15,plain,
    ( sP100
    | ~ sP89 ),
    inference(prop_rule,[status(thm)],]) ).

thf(16,plain,
    ( sP81
    | ~ sP100 ),
    inference(prop_rule,[status(thm)],]) ).

thf(17,plain,
    ( sP132
    | ~ sP81 ),
    inference(prop_rule,[status(thm)],]) ).

thf(18,plain,
    ( sP162
    | ~ sP132 ),
    inference(prop_rule,[status(thm)],]) ).

thf(19,plain,
    ( sP80
    | ~ sP162 ),
    inference(prop_rule,[status(thm)],]) ).

thf(20,plain,
    ( sP130
    | ~ sP80 ),
    inference(prop_rule,[status(thm)],]) ).

thf(21,plain,
    ( sP151
    | ~ sP130 ),
    inference(prop_rule,[status(thm)],]) ).

thf(22,plain,
    ( sP183
    | ~ sP151 ),
    inference(prop_rule,[status(thm)],]) ).

thf(23,plain,
    ( sP93
    | ~ sP183 ),
    inference(prop_rule,[status(thm)],]) ).

thf(24,plain,
    ( sP4
    | ~ sP93 ),
    inference(prop_rule,[status(thm)],]) ).

thf(25,plain,
    ( sP28
    | ~ sP4 ),
    inference(prop_rule,[status(thm)],]) ).

thf(26,plain,
    ( sP41
    | ~ sP28 ),
    inference(prop_rule,[status(thm)],]) ).

thf(27,plain,
    ( sP121
    | ~ sP41 ),
    inference(prop_rule,[status(thm)],]) ).

thf(28,plain,
    ( sP74
    | ~ sP121 ),
    inference(prop_rule,[status(thm)],]) ).

thf(29,plain,
    ( sP65
    | ~ sP74 ),
    inference(prop_rule,[status(thm)],]) ).

thf(30,plain,
    ( sP48
    | ~ sP65 ),
    inference(prop_rule,[status(thm)],]) ).

thf(31,plain,
    ( sP1
    | ~ sP48 ),
    inference(prop_rule,[status(thm)],]) ).

thf(32,plain,
    ( sP88
    | ~ sP1 ),
    inference(prop_rule,[status(thm)],]) ).

thf(33,plain,
    ( sP40
    | ~ sP88 ),
    inference(prop_rule,[status(thm)],]) ).

thf(34,plain,
    ( sP24
    | ~ sP40 ),
    inference(prop_rule,[status(thm)],]) ).

thf(35,plain,
    ( sP107
    | ~ sP24 ),
    inference(prop_rule,[status(thm)],]) ).

thf(36,plain,
    ( sP147
    | ~ sP107 ),
    inference(prop_rule,[status(thm)],]) ).

thf(37,plain,
    ( sP141
    | ~ sP147 ),
    inference(prop_rule,[status(thm)],]) ).

thf(38,plain,
    ( sP194
    | ~ sP141 ),
    inference(prop_rule,[status(thm)],]) ).

thf(39,plain,
    ( sP115
    | ~ sP194 ),
    inference(prop_rule,[status(thm)],]) ).

thf(40,plain,
    ( sP101
    | ~ sP115 ),
    inference(prop_rule,[status(thm)],]) ).

thf(41,plain,
    ( sP84
    | ~ sP101 ),
    inference(prop_rule,[status(thm)],]) ).

thf(42,plain,
    ( sP45
    | ~ sP84 ),
    inference(prop_rule,[status(thm)],]) ).

thf(43,plain,
    ( sP168
    | ~ sP45 ),
    inference(prop_rule,[status(thm)],]) ).

thf(44,plain,
    ( sP66
    | ~ sP168 ),
    inference(prop_rule,[status(thm)],]) ).

thf(45,plain,
    ( sP21
    | ~ sP66 ),
    inference(prop_rule,[status(thm)],]) ).

thf(46,plain,
    ( sP136
    | ~ sP21 ),
    inference(prop_rule,[status(thm)],]) ).

thf(47,plain,
    ( sP26
    | ~ sP136 ),
    inference(prop_rule,[status(thm)],]) ).

thf(48,plain,
    ( sP52
    | ~ sP26 ),
    inference(prop_rule,[status(thm)],]) ).

thf(49,plain,
    ( sP106
    | ~ sP52 ),
    inference(prop_rule,[status(thm)],]) ).

thf(50,plain,
    ( sP172
    | ~ sP106 ),
    inference(prop_rule,[status(thm)],]) ).

thf(51,plain,
    ( sP167
    | ~ sP172 ),
    inference(prop_rule,[status(thm)],]) ).

thf(52,plain,
    ( sP133
    | ~ sP167 ),
    inference(prop_rule,[status(thm)],]) ).

thf(53,plain,
    ( sP98
    | ~ sP133 ),
    inference(prop_rule,[status(thm)],]) ).

thf(54,plain,
    ( sP83
    | ~ sP98 ),
    inference(prop_rule,[status(thm)],]) ).

thf(55,plain,
    ( sP87
    | ~ sP83 ),
    inference(prop_rule,[status(thm)],]) ).

thf(56,plain,
    ( sP175
    | ~ sP87 ),
    inference(prop_rule,[status(thm)],]) ).

thf(57,plain,
    ( sP86
    | ~ sP175 ),
    inference(prop_rule,[status(thm)],]) ).

thf(58,plain,
    ( sP72
    | ~ sP86 ),
    inference(prop_rule,[status(thm)],]) ).

thf(59,plain,
    ( sP43
    | ~ sP72 ),
    inference(prop_rule,[status(thm)],]) ).

thf(60,plain,
    ( sP182
    | ~ sP43 ),
    inference(prop_rule,[status(thm)],]) ).

thf(61,plain,
    ( sP62
    | ~ sP182 ),
    inference(prop_rule,[status(thm)],]) ).

thf(62,plain,
    ( sP19
    | ~ sP62 ),
    inference(prop_rule,[status(thm)],]) ).

thf(63,plain,
    ( sP22
    | ~ sP19 ),
    inference(prop_rule,[status(thm)],]) ).

thf(64,plain,
    ( sP55
    | ~ sP22 ),
    inference(prop_rule,[status(thm)],]) ).

thf(65,plain,
    ( sP97
    | ~ sP55 ),
    inference(prop_rule,[status(thm)],]) ).

thf(66,plain,
    ( sP110
    | ~ sP97 ),
    inference(prop_rule,[status(thm)],]) ).

thf(67,plain,
    ( sP124
    | ~ sP110 ),
    inference(prop_rule,[status(thm)],]) ).

thf(68,plain,
    ( sP69
    | ~ sP124 ),
    inference(prop_rule,[status(thm)],]) ).

thf(69,plain,
    ( sP54
    | ~ sP69 ),
    inference(prop_rule,[status(thm)],]) ).

thf(70,plain,
    ( sP196
    | ~ sP54 ),
    inference(prop_rule,[status(thm)],]) ).

thf(71,plain,
    ( sP117
    | ~ sP196 ),
    inference(prop_rule,[status(thm)],]) ).

thf(72,plain,
    ( sP152
    | ~ sP117 ),
    inference(prop_rule,[status(thm)],]) ).

thf(73,plain,
    ( sP25
    | ~ sP152 ),
    inference(prop_rule,[status(thm)],]) ).

thf(74,plain,
    ( sP123
    | ~ sP25 ),
    inference(prop_rule,[status(thm)],]) ).

thf(75,plain,
    ( sP18
    | ~ sP123 ),
    inference(prop_rule,[status(thm)],]) ).

thf(76,plain,
    ( sP95
    | ~ sP18 ),
    inference(prop_rule,[status(thm)],]) ).

thf(77,plain,
    ( sP109
    | ~ sP95 ),
    inference(prop_rule,[status(thm)],]) ).

thf(78,plain,
    ( sP73
    | ~ sP109 ),
    inference(prop_rule,[status(thm)],]) ).

thf(79,plain,
    ( sP169
    | ~ sP73 ),
    inference(prop_rule,[status(thm)],]) ).

thf(80,plain,
    ( sP181
    | ~ sP169 ),
    inference(prop_rule,[status(thm)],]) ).

thf(81,plain,
    ( sP165
    | ~ sP181 ),
    inference(prop_rule,[status(thm)],]) ).

thf(82,plain,
    ( sP44
    | ~ sP165 ),
    inference(prop_rule,[status(thm)],]) ).

thf(83,plain,
    ( sP120
    | ~ sP44 ),
    inference(prop_rule,[status(thm)],]) ).

thf(84,plain,
    ( sP99
    | ~ sP120 ),
    inference(prop_rule,[status(thm)],]) ).

thf(85,plain,
    ( sP158
    | ~ sP99 ),
    inference(prop_rule,[status(thm)],]) ).

thf(86,plain,
    ( sP14
    | ~ sP158 ),
    inference(prop_rule,[status(thm)],]) ).

thf(87,plain,
    ( sP156
    | ~ sP14 ),
    inference(prop_rule,[status(thm)],]) ).

thf(88,plain,
    ( sP150
    | ~ sP156 ),
    inference(prop_rule,[status(thm)],]) ).

thf(89,plain,
    ( sP154
    | ~ sP150 ),
    inference(prop_rule,[status(thm)],]) ).

thf(90,plain,
    ( sP85
    | ~ sP154 ),
    inference(prop_rule,[status(thm)],]) ).

thf(91,plain,
    ( sP122
    | ~ sP85 ),
    inference(prop_rule,[status(thm)],]) ).

thf(92,plain,
    ( sP148
    | ~ sP122 ),
    inference(prop_rule,[status(thm)],]) ).

thf(93,plain,
    ( sP79
    | ~ sP148 ),
    inference(prop_rule,[status(thm)],]) ).

thf(94,plain,
    ( sP39
    | ~ sP79 ),
    inference(prop_rule,[status(thm)],]) ).

thf(95,plain,
    ( sP179
    | ~ sP39 ),
    inference(prop_rule,[status(thm)],]) ).

thf(96,plain,
    ( sP185
    | ~ sP179 ),
    inference(prop_rule,[status(thm)],]) ).

thf(97,plain,
    ( sP103
    | ~ sP185 ),
    inference(prop_rule,[status(thm)],]) ).

thf(98,plain,
    ( sP37
    | ~ sP103 ),
    inference(prop_rule,[status(thm)],]) ).

thf(99,plain,
    ( sP195
    | ~ sP37 ),
    inference(prop_rule,[status(thm)],]) ).

thf(100,plain,
    ( sP166
    | ~ sP195 ),
    inference(prop_rule,[status(thm)],]) ).

thf(101,plain,
    ( sP58
    | ~ sP166 ),
    inference(prop_rule,[status(thm)],]) ).

thf(102,plain,
    ( sP102
    | ~ sP58 ),
    inference(prop_rule,[status(thm)],]) ).

thf(103,plain,
    ( sP9
    | ~ sP102 ),
    inference(prop_rule,[status(thm)],]) ).

thf(104,plain,
    ( sP92
    | ~ sP9 ),
    inference(prop_rule,[status(thm)],]) ).

thf(105,plain,
    ( sP61
    | ~ sP92 ),
    inference(prop_rule,[status(thm)],]) ).

thf(106,plain,
    ( sP157
    | ~ sP61 ),
    inference(prop_rule,[status(thm)],]) ).

thf(107,plain,
    ( sP193
    | ~ sP157 ),
    inference(prop_rule,[status(thm)],]) ).

thf(108,plain,
    ( sP161
    | ~ sP193 ),
    inference(prop_rule,[status(thm)],]) ).

thf(109,plain,
    ( sP33
    | ~ sP161 ),
    inference(prop_rule,[status(thm)],]) ).

thf(110,plain,
    ( sP153
    | ~ sP33 ),
    inference(prop_rule,[status(thm)],]) ).

thf(111,plain,
    ( sP64
    | ~ sP153 ),
    inference(prop_rule,[status(thm)],]) ).

thf(112,plain,
    ( sP119
    | ~ sP64 ),
    inference(prop_rule,[status(thm)],]) ).

thf(113,plain,
    ( sP68
    | ~ sP119 ),
    inference(prop_rule,[status(thm)],]) ).

thf(114,plain,
    ( sP155
    | ~ sP68 ),
    inference(prop_rule,[status(thm)],]) ).

thf(115,plain,
    ( sP76
    | ~ sP155 ),
    inference(prop_rule,[status(thm)],]) ).

thf(116,plain,
    ( sP42
    | ~ sP76 ),
    inference(prop_rule,[status(thm)],]) ).

thf(117,plain,
    ( sP50
    | ~ sP42 ),
    inference(prop_rule,[status(thm)],]) ).

thf(118,plain,
    ( sP174
    | ~ sP50 ),
    inference(prop_rule,[status(thm)],]) ).

thf(119,plain,
    ( sP96
    | ~ sP174 ),
    inference(prop_rule,[status(thm)],]) ).

thf(120,plain,
    ( sP159
    | ~ sP96 ),
    inference(prop_rule,[status(thm)],]) ).

thf(121,plain,
    ( sP49
    | ~ sP159 ),
    inference(prop_rule,[status(thm)],]) ).

thf(122,plain,
    ( sP71
    | ~ sP49 ),
    inference(prop_rule,[status(thm)],]) ).

thf(123,plain,
    ( sP17
    | ~ sP71 ),
    inference(prop_rule,[status(thm)],]) ).

thf(124,plain,
    ( sP129
    | ~ sP17 ),
    inference(prop_rule,[status(thm)],]) ).

thf(125,plain,
    ( sP82
    | ~ sP129 ),
    inference(prop_rule,[status(thm)],]) ).

thf(126,plain,
    ( sP189
    | ~ sP82 ),
    inference(prop_rule,[status(thm)],]) ).

thf(127,plain,
    ( sP139
    | ~ sP189 ),
    inference(prop_rule,[status(thm)],]) ).

thf(128,plain,
    ( sP6
    | ~ sP139 ),
    inference(prop_rule,[status(thm)],]) ).

thf(129,plain,
    ( sP142
    | ~ sP6 ),
    inference(prop_rule,[status(thm)],]) ).

thf(130,plain,
    ( sP116
    | ~ sP142 ),
    inference(prop_rule,[status(thm)],]) ).

thf(131,plain,
    ( sP36
    | ~ sP116 ),
    inference(prop_rule,[status(thm)],]) ).

thf(132,plain,
    ( sP140
    | ~ sP36 ),
    inference(prop_rule,[status(thm)],]) ).

thf(133,plain,
    ( sP70
    | ~ sP140 ),
    inference(prop_rule,[status(thm)],]) ).

thf(134,plain,
    ( sP32
    | ~ sP70 ),
    inference(prop_rule,[status(thm)],]) ).

thf(135,plain,
    ( sP57
    | ~ sP32 ),
    inference(prop_rule,[status(thm)],]) ).

thf(136,plain,
    ( sP173
    | ~ sP57 ),
    inference(prop_rule,[status(thm)],]) ).

thf(137,plain,
    ( sP78
    | ~ sP173 ),
    inference(prop_rule,[status(thm)],]) ).

thf(138,plain,
    ( sP192
    | ~ sP78 ),
    inference(prop_rule,[status(thm)],]) ).

thf(139,plain,
    ( sP177
    | ~ sP192 ),
    inference(prop_rule,[status(thm)],]) ).

thf(140,plain,
    ( sP113
    | ~ sP177 ),
    inference(prop_rule,[status(thm)],]) ).

thf(141,plain,
    ( sP188
    | ~ sP113 ),
    inference(prop_rule,[status(thm)],]) ).

thf(142,plain,
    ( sP176
    | ~ sP188 ),
    inference(prop_rule,[status(thm)],]) ).

thf(143,plain,
    ( sP114
    | ~ sP176 ),
    inference(prop_rule,[status(thm)],]) ).

thf(144,plain,
    ( sP112
    | ~ sP114 ),
    inference(prop_rule,[status(thm)],]) ).

thf(145,plain,
    ( sP149
    | ~ sP112 ),
    inference(prop_rule,[status(thm)],]) ).

thf(146,plain,
    ( sP126
    | ~ sP149 ),
    inference(prop_rule,[status(thm)],]) ).

thf(147,plain,
    ( sP23
    | ~ sP126 ),
    inference(prop_rule,[status(thm)],]) ).

thf(148,plain,
    ( sP91
    | ~ sP23 ),
    inference(prop_rule,[status(thm)],]) ).

thf(149,plain,
    ( sP11
    | ~ sP91 ),
    inference(prop_rule,[status(thm)],]) ).

thf(150,plain,
    ( sP3
    | ~ sP11 ),
    inference(prop_rule,[status(thm)],]) ).

thf(151,plain,
    ( sP60
    | ~ sP3 ),
    inference(prop_rule,[status(thm)],]) ).

thf(152,plain,
    ( sP171
    | ~ sP60 ),
    inference(prop_rule,[status(thm)],]) ).

thf(153,plain,
    ( sP138
    | ~ sP171 ),
    inference(prop_rule,[status(thm)],]) ).

thf(154,plain,
    ( sP164
    | ~ sP138 ),
    inference(prop_rule,[status(thm)],]) ).

thf(155,plain,
    ( sP135
    | ~ sP164 ),
    inference(prop_rule,[status(thm)],]) ).

thf(156,plain,
    ( sP56
    | ~ sP135 ),
    inference(prop_rule,[status(thm)],]) ).

thf(157,plain,
    ( sP38
    | ~ sP56 ),
    inference(prop_rule,[status(thm)],]) ).

thf(158,plain,
    ( sP47
    | ~ sP38 ),
    inference(prop_rule,[status(thm)],]) ).

thf(159,plain,
    ( sP131
    | ~ sP47 ),
    inference(prop_rule,[status(thm)],]) ).

thf(160,plain,
    ( sP118
    | ~ sP131 ),
    inference(prop_rule,[status(thm)],]) ).

thf(161,plain,
    ( sP13
    | ~ sP118 ),
    inference(prop_rule,[status(thm)],]) ).

thf(162,plain,
    ( sP31
    | ~ sP13 ),
    inference(prop_rule,[status(thm)],]) ).

thf(163,plain,
    ( sP178
    | ~ sP31 ),
    inference(prop_rule,[status(thm)],]) ).

thf(164,plain,
    ( sP75
    | ~ sP178 ),
    inference(prop_rule,[status(thm)],]) ).

thf(165,plain,
    ( sP59
    | ~ sP75 ),
    inference(prop_rule,[status(thm)],]) ).

thf(166,plain,
    ( sP163
    | ~ sP59 ),
    inference(prop_rule,[status(thm)],]) ).

thf(167,plain,
    ( sP146
    | ~ sP163 ),
    inference(prop_rule,[status(thm)],]) ).

thf(168,plain,
    ( sP184
    | ~ sP146 ),
    inference(prop_rule,[status(thm)],]) ).

thf(169,plain,
    ( sP191
    | ~ sP184 ),
    inference(prop_rule,[status(thm)],]) ).

thf(170,plain,
    ( sP53
    | ~ sP191 ),
    inference(prop_rule,[status(thm)],]) ).

thf(171,plain,
    ( sP16
    | ~ sP53 ),
    inference(prop_rule,[status(thm)],]) ).

thf(172,plain,
    ( sP145
    | ~ sP16 ),
    inference(prop_rule,[status(thm)],]) ).

thf(173,plain,
    ( sP2
    | ~ sP145 ),
    inference(prop_rule,[status(thm)],]) ).

thf(174,plain,
    ( sP27
    | ~ sP2 ),
    inference(prop_rule,[status(thm)],]) ).

thf(175,plain,
    ( sP12
    | ~ sP27 ),
    inference(prop_rule,[status(thm)],]) ).

thf(176,plain,
    ( sP63
    | ~ sP12 ),
    inference(prop_rule,[status(thm)],]) ).

thf(177,plain,
    ( sP30
    | ~ sP63 ),
    inference(prop_rule,[status(thm)],]) ).

thf(178,plain,
    ( sP8
    | ~ sP30 ),
    inference(prop_rule,[status(thm)],]) ).

thf(179,plain,
    ( sP29
    | ~ sP8 ),
    inference(prop_rule,[status(thm)],]) ).

thf(180,plain,
    ( sP160
    | ~ sP29 ),
    inference(prop_rule,[status(thm)],]) ).

thf(181,plain,
    ( sP5
    | ~ sP160 ),
    inference(prop_rule,[status(thm)],]) ).

thf(182,plain,
    ( sP5
    | sP180 ),
    inference(prop_rule,[status(thm)],]) ).

thf(183,plain,
    ( sP67
    | ~ sP5 ),
    inference(prop_rule,[status(thm)],]) ).

thf(184,plain,
    ( sP187
    | ~ sP67 ),
    inference(prop_rule,[status(thm)],]) ).

thf(185,plain,
    ( sP134
    | ~ sP187 ),
    inference(prop_rule,[status(thm)],]) ).

thf(186,plain,
    ( sP125
    | ~ sP134 ),
    inference(prop_rule,[status(thm)],]) ).

thf(187,plain,
    ( sP94
    | ~ sP125 ),
    inference(prop_rule,[status(thm)],]) ).

thf(188,plain,
    ( sP90
    | ~ sP94 ),
    inference(prop_rule,[status(thm)],]) ).

thf(189,plain,
    ( sP170
    | ~ sP90 ),
    inference(prop_rule,[status(thm)],]) ).

thf(190,plain,
    ( sP105
    | ~ sP170 ),
    inference(prop_rule,[status(thm)],]) ).

thf(191,plain,
    ( sP111
    | ~ sP105 ),
    inference(prop_rule,[status(thm)],]) ).

thf(192,plain,
    ( sP108
    | ~ sP111 ),
    inference(prop_rule,[status(thm)],]) ).

thf(193,plain,
    ( sP10
    | ~ sP108 ),
    inference(prop_rule,[status(thm)],]) ).

thf(194,plain,
    ( sP35
    | ~ sP10 ),
    inference(prop_rule,[status(thm)],]) ).

thf(195,plain,
    ( sP128
    | ~ sP35 ),
    inference(prop_rule,[status(thm)],]) ).

thf(196,plain,
    ( sP137
    | ~ sP128 ),
    inference(prop_rule,[status(thm)],]) ).

thf(197,plain,
    $false,
    inference(prop_unsat,[status(thm),assumptions([h1,h0])],[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,h1]) ).

thf(198,plain,
    $false,
    inference(eigenvar_choice,[status(thm),assumptions([h1]),eigenvar_choice(discharge,[h0])],[197,h0]) ).

thf(0,theorem,
    sP137,
    inference(contra,[status(thm),contra(discharge,[h1])],[197,h1]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.12  % Problem  : SEU675^1 : TPTP v8.1.0. Released v3.7.0.
% 0.07/0.13  % Command  : satallax -E eprover-ho -P picomus -M modes -p tstp -t %d %s
% 0.14/0.34  % Computer : n023.cluster.edu
% 0.14/0.34  % Model    : x86_64 x86_64
% 0.14/0.34  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.14/0.34  % Memory   : 8042.1875MB
% 0.14/0.34  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.14/0.34  % CPULimit : 300
% 0.14/0.34  % WCLimit  : 600
% 0.14/0.34  % DateTime : Sat Jun 18 23:28:49 EDT 2022
% 0.14/0.34  % CPUTime  : 
% 222.88/222.35  % SZS status Theorem
% 222.88/222.35  % Mode: mode505:USE_SINE=true:SINE_TOLERANCE=3.0:SINE_GENERALITY_THRESHOLD=256:SINE_RANK_LIMIT=1.:SINE_DEPTH=1
% 222.88/222.35  % Inferences: 379
% 222.88/222.35  % SZS output start Proof
% See solution above
%------------------------------------------------------------------------------