TSTP Solution File: SEU506^1 by Lash---1.13

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%------------------------------------------------------------------------------
% File     : Lash---1.13
% Problem  : SEU506^1 : TPTP v8.1.2. Released v3.7.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : lash -P picomus -M modes -p tstp -t %d %s

% Computer : n027.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  : 300s
% DateTime : Thu Aug 31 17:18:01 EDT 2023

% Result   : Theorem 24.56s 24.54s
% Output   : Proof 24.56s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   26
%            Number of leaves      :  103
% Syntax   : Number of formulae    :  132 (  65 unt;  11 typ;  26 def)
%            Number of atoms       : 1196 ( 186 equ;   4 cnn)
%            Maximal formula atoms :   61 (   9 avg)
%            Number of connectives : 4101 ( 687   ~;  15   |;  18   &;2262   @)
%                                         (  19 <=>;1100  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   33 (   7 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :  134 ( 134   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   52 (  49 usr;  45 con; 0-2 aty)
%            Number of variables   : 1142 ( 106   ^;1022   !;  14   ?;1142   :)

% Comments : 
%------------------------------------------------------------------------------
thf(ty_eigen__10,type,
    eigen__10: $i ).

thf(ty_eigen__13,type,
    eigen__13: $i ).

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

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

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

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

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

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

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

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

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

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

thf(eigendef_eigen__10,definition,
    ( eigen__10
    = ( eps__0
      @ ^ [X1: $i] :
          ~ ( ( in @ X1 @ eigen__0 )
           => ( in @ X1 @ emptyset ) ) ) ),
    introduced(definition,[new_symbols(definition,[eigen__10])]) ).

thf(eigendef_eigen__13,definition,
    ( eigen__13
    = ( eps__0
      @ ^ [X1: $i] :
          ~ ( ( in @ X1 @ emptyset )
           => ( in @ X1 @ eigen__0 ) ) ) ),
    introduced(definition,[new_symbols(definition,[eigen__13])]) ).

thf(sP1,plain,
    ( sP1
  <=> ! [X1: $i] :
        ~ ( in @ X1 @ eigen__0 ) ),
    introduced(definition,[new_symbols(definition,[sP1])]) ).

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

thf(sP3,plain,
    ( sP3
  <=> ( ( in @ eigen__13 @ emptyset )
     => ( in @ eigen__13 @ eigen__0 ) ) ),
    introduced(definition,[new_symbols(definition,[sP3])]) ).

thf(sP4,plain,
    ( sP4
  <=> ( in @ eigen__13 @ emptyset ) ),
    introduced(definition,[new_symbols(definition,[sP4])]) ).

thf(sP5,plain,
    ( sP5
  <=> ( ! [X1: $i] :
          ( ( in @ X1 @ eigen__0 )
         => ( in @ X1 @ emptyset ) )
     => ( ! [X1: $i] :
            ( ( in @ X1 @ emptyset )
           => ( in @ X1 @ eigen__0 ) )
       => ( eigen__0 = emptyset ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP5])]) ).

thf(sP6,plain,
    ( sP6
  <=> ! [X1: $i] :
        ( ( in @ X1 @ emptyset )
       => ( in @ X1 @ eigen__0 ) ) ),
    introduced(definition,[new_symbols(definition,[sP6])]) ).

thf(sP7,plain,
    ( sP7
  <=> ! [X1: $i] :
        ( ( in @ X1 @ eigen__0 )
       => ( in @ X1 @ emptyset ) ) ),
    introduced(definition,[new_symbols(definition,[sP7])]) ).

thf(sP8,plain,
    ( sP8
  <=> ( in @ eigen__10 @ eigen__0 ) ),
    introduced(definition,[new_symbols(definition,[sP8])]) ).

thf(sP9,plain,
    ( sP9
  <=> ( sP6
     => ( eigen__0 = emptyset ) ) ),
    introduced(definition,[new_symbols(definition,[sP9])]) ).

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

thf(sP11,plain,
    ( sP11
  <=> ( eigen__0 = emptyset ) ),
    introduced(definition,[new_symbols(definition,[sP11])]) ).

thf(sP12,plain,
    ( sP12
  <=> ( sP8
     => ( in @ eigen__10 @ emptyset ) ) ),
    introduced(definition,[new_symbols(definition,[sP12])]) ).

thf(sP13,plain,
    ( sP13
  <=> ! [X1: $i] :
        ( ! [X2: $i] :
            ( ( in @ X2 @ eigen__0 )
           => ( in @ X2 @ X1 ) )
       => ( ! [X2: $i] :
              ( ( in @ X2 @ X1 )
             => ( in @ X2 @ eigen__0 ) )
         => ( eigen__0 = X1 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP13])]) ).

thf(def_exu,definition,
    ( exu
    = ( ^ [X1: $i > $o] :
        ? [X2: $i] :
          ( ( X1 @ X2 )
          & ! [X3: $i] :
              ( ^ [X4: $o,X5: $o] :
                  ( X4
                 => X5 )
              @ ( X1 @ X3 )
              @ ( X2 = X3 ) ) ) ) ) ).

thf(def_setextAx,definition,
    ( setextAx
    = ( ! [X1: $i,X2: $i] :
          ( ^ [X3: $o,X4: $o] :
              ( X3
             => X4 )
          @ ! [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] :
              ( ^ [X4: $o,X5: $o] :
                  ( X4
                 => X5 )
              @ ( 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] :
          ( ^ [X2: $o,X3: $o] :
              ( X2
             => X3 )
          @ ( in @ X1 @ omega )
          @ ( in @ ( setadjoin @ X1 @ X1 ) @ omega ) ) ) ) ).

thf(def_omegaIndAx,definition,
    ( omegaIndAx
    = ( ! [X1: $i] :
          ( ^ [X2: $o,X3: $o] :
              ( X2
             => X3 )
          @ ( ( in @ emptyset @ X1 )
            & ! [X2: $i] :
                ( ^ [X3: $o,X4: $o] :
                    ( X3
                   => X4 )
                @ ( ( in @ X2 @ omega )
                  & ( in @ X2 @ X1 ) )
                @ ( in @ ( setadjoin @ X2 @ X2 ) @ X1 ) ) )
          @ ! [X2: $i] :
              ( ^ [X3: $o,X4: $o] :
                  ( X3
                 => X4 )
              @ ( in @ X2 @ omega )
              @ ( in @ X2 @ X1 ) ) ) ) ) ).

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

thf(def_foundationAx,definition,
    ( foundationAx
    = ( ! [X1: $i] :
          ( ^ [X2: $o,X3: $o] :
              ( X2
             => X3 )
          @ ? [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] :
              ( ^ [X4: $o,X5: $o] :
                  ( X4
                 => X5 )
              @ ( in @ X3 @ X2 )
              @ ! [X4: $i] :
                  ( ^ [X5: $o,X6: $o] :
                      ( X5
                     => X6 )
                  @ ( in @ X4 @ X3 )
                  @ ( in @ X4 @ X1 ) ) )
          & ! [X3: $i,X4: $i] :
              ( ^ [X5: $o,X6: $o] :
                  ( X5
                 => X6 )
              @ ( ( in @ X3 @ X1 )
                & ( in @ X4 @ X1 ) )
              @ ( ^ [X5: $o,X6: $o] :
                    ( X5
                   => X6 )
                @ ! [X5: $i] :
                    ( ^ [X6: $o,X7: $o] :
                        ( X6
                       => X7 )
                    @ ( in @ X5 @ X2 )
                    @ ( ( in @ X3 @ X5 )
                    <=> ( in @ X4 @ X5 ) ) )
                @ ( X3 = X4 ) ) )
          & ! [X3: $i,X4: $i] :
              ( ^ [X5: $o,X6: $o] :
                  ( X5
                 => X6 )
              @ ( ( in @ X3 @ X2 )
                & ( in @ X4 @ X2 ) )
              @ ( ! [X5: $i] :
                    ( ^ [X6: $o,X7: $o] :
                        ( X6
                       => X7 )
                    @ ( in @ X5 @ X3 )
                    @ ( in @ X5 @ X4 ) )
                | ! [X5: $i] :
                    ( ^ [X6: $o,X7: $o] :
                        ( X6
                       => X7 )
                    @ ( in @ X5 @ X4 )
                    @ ( in @ X5 @ X3 ) ) ) )
          & ! [X3: $i] :
              ( ^ [X4: $o,X5: $o] :
                  ( X4
                 => X5 )
              @ ( ! [X4: $i] :
                    ( ^ [X5: $o,X6: $o] :
                        ( X5
                       => X6 )
                    @ ( 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] :
                      ( ^ [X7: $o,X8: $o] :
                          ( X7
                         => X8 )
                      @ ( in @ X6 @ X2 )
                      @ ( ! [X7: $i] :
                            ( ^ [X8: $o,X9: $o] :
                                ( X8
                               => X9 )
                            @ ( in @ X7 @ X6 )
                            @ ( in @ X7 @ X4 ) )
                        | ( in @ X5 @ X6 ) ) ) ) ) ) ) ) ).

thf(def_descrp,definition,
    ( descrp
    = ( ! [X1: $i > $o] :
          ( ^ [X2: $o,X3: $o] :
              ( X2
             => X3 )
          @ ( exu
            @ ^ [X2: $i] : ( X1 @ X2 ) )
          @ ( X1
            @ ( descr
              @ ^ [X2: $i] : ( X1 @ X2 ) ) ) ) ) ) ).

thf(def_dsetconstrI,definition,
    ( dsetconstrI
    = ( ! [X1: $i,X2: $i > $o,X3: $i] :
          ( ^ [X4: $o,X5: $o] :
              ( X4
             => X5 )
          @ ( in @ X3 @ X1 )
          @ ( ^ [X4: $o,X5: $o] :
                ( X4
               => X5 )
            @ ( X2 @ X3 )
            @ ( in @ X3
              @ ( dsetconstr @ X1
                @ ^ [X4: $i] : ( X2 @ X4 ) ) ) ) ) ) ) ).

thf(def_dsetconstrEL,definition,
    ( dsetconstrEL
    = ( ! [X1: $i,X2: $i > $o,X3: $i] :
          ( ^ [X4: $o,X5: $o] :
              ( X4
             => X5 )
          @ ( in @ X3
            @ ( dsetconstr @ X1
              @ ^ [X4: $i] : ( X2 @ X4 ) ) )
          @ ( in @ X3 @ X1 ) ) ) ) ).

thf(def_dsetconstrER,definition,
    ( dsetconstrER
    = ( ! [X1: $i,X2: $i > $o,X3: $i] :
          ( ^ [X4: $o,X5: $o] :
              ( X4
             => X5 )
          @ ( in @ X3
            @ ( dsetconstr @ X1
              @ ^ [X4: $i] : ( X2 @ X4 ) ) )
          @ ( X2 @ X3 ) ) ) ) ).

thf(def_exuE1,definition,
    ( exuE1
    = ( ! [X1: $i > $o] :
          ( ^ [X2: $o,X3: $o] :
              ( X2
             => X3 )
          @ ( exu
            @ ^ [X2: $i] : ( X1 @ X2 ) )
          @ ? [X2: $i] :
              ( ( X1 @ X2 )
              & ! [X3: $i] :
                  ( ^ [X4: $o,X5: $o] :
                      ( X4
                     => X5 )
                  @ ( X1 @ X3 )
                  @ ( X2 = X3 ) ) ) ) ) ) ).

thf(def_prop2set,definition,
    ( prop2set
    = ( ^ [X1: $o] :
          ( dsetconstr @ ( powerset @ emptyset )
          @ ^ [X2: $i] : X1 ) ) ) ).

thf(def_prop2setE,definition,
    ( prop2setE
    = ( ! [X1: $o,X2: $i] :
          ( ^ [X3: $o,X4: $o] :
              ( X3
             => X4 )
          @ ( in @ X2 @ ( prop2set @ X1 ) )
          @ X1 ) ) ) ).

thf(def_emptysetE,definition,
    ( emptysetE
    = ( ! [X1: $i] :
          ( ^ [X2: $o,X3: $o] :
              ( X2
             => X3 )
          @ ( in @ X1 @ emptyset )
          @ ! [X2: $o] : X2 ) ) ) ).

thf(def_emptysetimpfalse,definition,
    ( emptysetimpfalse
    = ( ! [X1: $i] :
          ( ^ [X2: $o,X3: $o] :
              ( X2
             => X3 )
          @ ( in @ X1 @ emptyset )
          @ $false ) ) ) ).

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

thf(def_exuE3e,definition,
    ( exuE3e
    = ( ! [X1: $i > $o] :
          ( ^ [X2: $o,X3: $o] :
              ( X2
             => X3 )
          @ ( exu
            @ ^ [X2: $i] : ( X1 @ X2 ) )
          @ ? [X2: $i] : ( X1 @ X2 ) ) ) ) ).

thf(def_setext,definition,
    ( setext
    = ( ! [X1: $i,X2: $i] :
          ( ^ [X3: $o,X4: $o] :
              ( X3
             => X4 )
          @ ! [X3: $i] :
              ( ^ [X4: $o,X5: $o] :
                  ( X4
                 => X5 )
              @ ( in @ X3 @ X1 )
              @ ( in @ X3 @ X2 ) )
          @ ( ^ [X3: $o,X4: $o] :
                ( X3
               => X4 )
            @ ! [X3: $i] :
                ( ^ [X4: $o,X5: $o] :
                    ( X4
                   => X5 )
                @ ( in @ X3 @ X2 )
                @ ( in @ X3 @ X1 ) )
            @ ( X1 = X2 ) ) ) ) ) ).

thf(emptyI,conjecture,
    ( ! [X1: $i,X2: $i] :
        ( ! [X3: $i] :
            ( ( in @ X3 @ X1 )
            = ( in @ X3 @ X2 ) )
       => ( X1 = X2 ) )
   => ( sP2
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
            = ( ( X3 != X1 )
             => ( in @ X3 @ X2 ) ) )
       => ( ! [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 )
                           => ~ ! [X4: $i] :
                                  ( ( X1 @ X3 @ X4 )
                                 => ~ ! [X5: $i] :
                                        ( ( X1 @ X3 @ X5 )
                                       => ( X4 = X5 ) ) ) )
                       => ~ ! [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] :
                              ( ~ ! [X2: $i] :
                                    ( ( X1 @ X2 )
                                   => ~ ! [X3: $i] :
                                          ( ( X1 @ X3 )
                                         => ( X2 = X3 ) ) )
                             => ( 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 ) )
                             => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                    ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                   => ( X2 @ X3 ) )
                               => ( ! [X1: $o,X2: $i] :
                                      ( ( in @ X2
                                        @ ( dsetconstr @ ( powerset @ emptyset )
                                          @ ^ [X3: $i] : X1 ) )
                                     => X1 )
                                 => ( ! [X1: $i] :
                                        ( ( in @ X1 @ emptyset )
                                       => ! [X2: $o] : X2 )
                                   => ( sP2
                                     => ( sP2
                                       => ( ! [X1: $i > $o] :
                                              ( ~ ! [X2: $i] :
                                                    ( ( X1 @ X2 )
                                                   => ~ ! [X3: $i] :
                                                          ( ( X1 @ X3 )
                                                         => ( X2 = X3 ) ) )
                                             => ~ ! [X2: $i] :
                                                    ~ ( X1 @ X2 ) )
                                         => ( sP10
                                           => ! [X1: $i] :
                                                ( ! [X2: $i] :
                                                    ~ ( in @ X2 @ X1 )
                                               => ( X1 = emptyset ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ).

thf(h1,negated_conjecture,
    ~ ( ! [X1: $i,X2: $i] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
              = ( in @ X3 @ X2 ) )
         => ( X1 = X2 ) )
     => ( sP2
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
              = ( ( X3 != X1 )
               => ( in @ X3 @ X2 ) ) )
         => ( ! [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 )
                             => ~ ! [X4: $i] :
                                    ( ( X1 @ X3 @ X4 )
                                   => ~ ! [X5: $i] :
                                          ( ( X1 @ X3 @ X5 )
                                         => ( X4 = X5 ) ) ) )
                         => ~ ! [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] :
                                ( ~ ! [X2: $i] :
                                      ( ( X1 @ X2 )
                                     => ~ ! [X3: $i] :
                                            ( ( X1 @ X3 )
                                           => ( X2 = X3 ) ) )
                               => ( 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 ) )
                               => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                      ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                     => ( X2 @ X3 ) )
                                 => ( ! [X1: $o,X2: $i] :
                                        ( ( in @ X2
                                          @ ( dsetconstr @ ( powerset @ emptyset )
                                            @ ^ [X3: $i] : X1 ) )
                                       => X1 )
                                   => ( ! [X1: $i] :
                                          ( ( in @ X1 @ emptyset )
                                         => ! [X2: $o] : X2 )
                                     => ( sP2
                                       => ( sP2
                                         => ( ! [X1: $i > $o] :
                                                ( ~ ! [X2: $i] :
                                                      ( ( X1 @ X2 )
                                                     => ~ ! [X3: $i] :
                                                            ( ( X1 @ X3 )
                                                           => ( X2 = X3 ) ) )
                                               => ~ ! [X2: $i] :
                                                      ~ ( X1 @ X2 ) )
                                           => ( sP10
                                             => ! [X1: $i] :
                                                  ( ! [X2: $i] :
                                                      ~ ( in @ X2 @ X1 )
                                                 => ( X1 = emptyset ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    inference(assume_negation,[status(cth)],[emptyI]) ).

thf(h2,assumption,
    ! [X1: $i,X2: $i] :
      ( ! [X3: $i] :
          ( ( in @ X3 @ X1 )
          = ( in @ X3 @ X2 ) )
     => ( X1 = X2 ) ),
    introduced(assumption,[]) ).

thf(h3,assumption,
    ~ ( sP2
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
            = ( ( X3 != X1 )
             => ( in @ X3 @ X2 ) ) )
       => ( ! [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 )
                           => ~ ! [X4: $i] :
                                  ( ( X1 @ X3 @ X4 )
                                 => ~ ! [X5: $i] :
                                        ( ( X1 @ X3 @ X5 )
                                       => ( X4 = X5 ) ) ) )
                       => ~ ! [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] :
                              ( ~ ! [X2: $i] :
                                    ( ( X1 @ X2 )
                                   => ~ ! [X3: $i] :
                                          ( ( X1 @ X3 )
                                         => ( X2 = X3 ) ) )
                             => ( 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 ) )
                             => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                    ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                   => ( X2 @ X3 ) )
                               => ( ! [X1: $o,X2: $i] :
                                      ( ( in @ X2
                                        @ ( dsetconstr @ ( powerset @ emptyset )
                                          @ ^ [X3: $i] : X1 ) )
                                     => X1 )
                                 => ( ! [X1: $i] :
                                        ( ( in @ X1 @ emptyset )
                                       => ! [X2: $o] : X2 )
                                   => ( sP2
                                     => ( sP2
                                       => ( ! [X1: $i > $o] :
                                              ( ~ ! [X2: $i] :
                                                    ( ( X1 @ X2 )
                                                   => ~ ! [X3: $i] :
                                                          ( ( X1 @ X3 )
                                                         => ( X2 = X3 ) ) )
                                             => ~ ! [X2: $i] :
                                                    ~ ( X1 @ X2 ) )
                                         => ( sP10
                                           => ! [X1: $i] :
                                                ( ! [X2: $i] :
                                                    ~ ( in @ X2 @ X1 )
                                               => ( X1 = emptyset ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h4,assumption,
    sP2,
    introduced(assumption,[]) ).

thf(h5,assumption,
    ~ ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
          = ( ( X3 != X1 )
           => ( in @ X3 @ X2 ) ) )
     => ( ! [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 )
                         => ~ ! [X4: $i] :
                                ( ( X1 @ X3 @ X4 )
                               => ~ ! [X5: $i] :
                                      ( ( X1 @ X3 @ X5 )
                                     => ( X4 = X5 ) ) ) )
                     => ~ ! [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] :
                            ( ~ ! [X2: $i] :
                                  ( ( X1 @ X2 )
                                 => ~ ! [X3: $i] :
                                        ( ( X1 @ X3 )
                                       => ( X2 = X3 ) ) )
                           => ( 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 ) )
                           => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                  ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                 => ( X2 @ X3 ) )
                             => ( ! [X1: $o,X2: $i] :
                                    ( ( in @ X2
                                      @ ( dsetconstr @ ( powerset @ emptyset )
                                        @ ^ [X3: $i] : X1 ) )
                                   => X1 )
                               => ( ! [X1: $i] :
                                      ( ( in @ X1 @ emptyset )
                                     => ! [X2: $o] : X2 )
                                 => ( sP2
                                   => ( sP2
                                     => ( ! [X1: $i > $o] :
                                            ( ~ ! [X2: $i] :
                                                  ( ( X1 @ X2 )
                                                 => ~ ! [X3: $i] :
                                                        ( ( X1 @ X3 )
                                                       => ( X2 = X3 ) ) )
                                           => ~ ! [X2: $i] :
                                                  ~ ( X1 @ X2 ) )
                                       => ( sP10
                                         => ! [X1: $i] :
                                              ( ! [X2: $i] :
                                                  ~ ( in @ X2 @ X1 )
                                             => ( X1 = emptyset ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h6,assumption,
    ! [X1: $i,X2: $i,X3: $i] :
      ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
      = ( ( X3 != X1 )
       => ( in @ X3 @ X2 ) ) ),
    introduced(assumption,[]) ).

thf(h7,assumption,
    ~ ( ! [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 )
                       => ~ ! [X4: $i] :
                              ( ( X1 @ X3 @ X4 )
                             => ~ ! [X5: $i] :
                                    ( ( X1 @ X3 @ X5 )
                                   => ( X4 = X5 ) ) ) )
                   => ~ ! [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] :
                          ( ~ ! [X2: $i] :
                                ( ( X1 @ X2 )
                               => ~ ! [X3: $i] :
                                      ( ( X1 @ X3 )
                                     => ( X2 = X3 ) ) )
                         => ( 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 ) )
                         => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                               => ( X2 @ X3 ) )
                           => ( ! [X1: $o,X2: $i] :
                                  ( ( in @ X2
                                    @ ( dsetconstr @ ( powerset @ emptyset )
                                      @ ^ [X3: $i] : X1 ) )
                                 => X1 )
                             => ( ! [X1: $i] :
                                    ( ( in @ X1 @ emptyset )
                                   => ! [X2: $o] : X2 )
                               => ( sP2
                                 => ( sP2
                                   => ( ! [X1: $i > $o] :
                                          ( ~ ! [X2: $i] :
                                                ( ( X1 @ X2 )
                                               => ~ ! [X3: $i] :
                                                      ( ( X1 @ X3 )
                                                     => ( X2 = X3 ) ) )
                                         => ~ ! [X2: $i] :
                                                ~ ( X1 @ X2 ) )
                                     => ( sP10
                                       => ! [X1: $i] :
                                            ( ! [X2: $i] :
                                                ~ ( in @ X2 @ X1 )
                                           => ( X1 = emptyset ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h8,assumption,
    ! [X1: $i,X2: $i] :
      ( ( in @ X2 @ ( powerset @ X1 ) )
      = ( ! [X3: $i] :
            ( ( in @ X3 @ X2 )
           => ( in @ X3 @ X1 ) ) ) ),
    introduced(assumption,[]) ).

thf(h9,assumption,
    ~ ( ! [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 )
                     => ~ ! [X4: $i] :
                            ( ( X1 @ X3 @ X4 )
                           => ~ ! [X5: $i] :
                                  ( ( X1 @ X3 @ X5 )
                                 => ( X4 = X5 ) ) ) )
                 => ~ ! [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] :
                        ( ~ ! [X2: $i] :
                              ( ( X1 @ X2 )
                             => ~ ! [X3: $i] :
                                    ( ( X1 @ X3 )
                                   => ( X2 = X3 ) ) )
                       => ( 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 ) )
                       => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                              ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                             => ( X2 @ X3 ) )
                         => ( ! [X1: $o,X2: $i] :
                                ( ( in @ X2
                                  @ ( dsetconstr @ ( powerset @ emptyset )
                                    @ ^ [X3: $i] : X1 ) )
                               => X1 )
                           => ( ! [X1: $i] :
                                  ( ( in @ X1 @ emptyset )
                                 => ! [X2: $o] : X2 )
                             => ( sP2
                               => ( sP2
                                 => ( ! [X1: $i > $o] :
                                        ( ~ ! [X2: $i] :
                                              ( ( X1 @ X2 )
                                             => ~ ! [X3: $i] :
                                                    ( ( X1 @ X3 )
                                                   => ( X2 = X3 ) ) )
                                       => ~ ! [X2: $i] :
                                              ~ ( X1 @ X2 ) )
                                   => ( sP10
                                     => ! [X1: $i] :
                                          ( ! [X2: $i] :
                                              ~ ( in @ X2 @ X1 )
                                         => ( X1 = emptyset ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h10,assumption,
    ! [X1: $i,X2: $i] :
      ( ( in @ X2 @ ( setunion @ X1 ) )
      = ( ~ ! [X3: $i] :
              ( ( in @ X2 @ X3 )
             => ~ ( in @ X3 @ X1 ) ) ) ),
    introduced(assumption,[]) ).

thf(h11,assumption,
    ~ ( ( 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 )
                   => ~ ! [X4: $i] :
                          ( ( X1 @ X3 @ X4 )
                         => ~ ! [X5: $i] :
                                ( ( X1 @ X3 @ X5 )
                               => ( X4 = X5 ) ) ) )
               => ~ ! [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] :
                      ( ~ ! [X2: $i] :
                            ( ( X1 @ X2 )
                           => ~ ! [X3: $i] :
                                  ( ( X1 @ X3 )
                                 => ( X2 = X3 ) ) )
                     => ( 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 ) )
                     => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                            ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                           => ( X2 @ X3 ) )
                       => ( ! [X1: $o,X2: $i] :
                              ( ( in @ X2
                                @ ( dsetconstr @ ( powerset @ emptyset )
                                  @ ^ [X3: $i] : X1 ) )
                             => X1 )
                         => ( ! [X1: $i] :
                                ( ( in @ X1 @ emptyset )
                               => ! [X2: $o] : X2 )
                           => ( sP2
                             => ( sP2
                               => ( ! [X1: $i > $o] :
                                      ( ~ ! [X2: $i] :
                                            ( ( X1 @ X2 )
                                           => ~ ! [X3: $i] :
                                                  ( ( X1 @ X3 )
                                                 => ( X2 = X3 ) ) )
                                     => ~ ! [X2: $i] :
                                            ~ ( X1 @ X2 ) )
                                 => ( sP10
                                   => ! [X1: $i] :
                                        ( ! [X2: $i] :
                                            ~ ( in @ X2 @ X1 )
                                       => ( X1 = emptyset ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h12,assumption,
    in @ emptyset @ omega,
    introduced(assumption,[]) ).

thf(h13,assumption,
    ~ ( ! [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 )
                 => ~ ! [X4: $i] :
                        ( ( X1 @ X3 @ X4 )
                       => ~ ! [X5: $i] :
                              ( ( X1 @ X3 @ X5 )
                             => ( X4 = X5 ) ) ) )
             => ~ ! [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] :
                    ( ~ ! [X2: $i] :
                          ( ( X1 @ X2 )
                         => ~ ! [X3: $i] :
                                ( ( X1 @ X3 )
                               => ( X2 = X3 ) ) )
                   => ( 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 ) )
                   => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                          ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                         => ( X2 @ X3 ) )
                     => ( ! [X1: $o,X2: $i] :
                            ( ( in @ X2
                              @ ( dsetconstr @ ( powerset @ emptyset )
                                @ ^ [X3: $i] : X1 ) )
                           => X1 )
                       => ( ! [X1: $i] :
                              ( ( in @ X1 @ emptyset )
                             => ! [X2: $o] : X2 )
                         => ( sP2
                           => ( sP2
                             => ( ! [X1: $i > $o] :
                                    ( ~ ! [X2: $i] :
                                          ( ( X1 @ X2 )
                                         => ~ ! [X3: $i] :
                                                ( ( X1 @ X3 )
                                               => ( X2 = X3 ) ) )
                                   => ~ ! [X2: $i] :
                                          ~ ( X1 @ X2 ) )
                               => ( sP10
                                 => ! [X1: $i] :
                                      ( ! [X2: $i] :
                                          ~ ( in @ X2 @ X1 )
                                     => ( X1 = emptyset ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h14,assumption,
    ! [X1: $i] :
      ( ( in @ X1 @ omega )
     => ( in @ ( setadjoin @ X1 @ X1 ) @ omega ) ),
    introduced(assumption,[]) ).

thf(h15,assumption,
    ~ ( ! [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 )
               => ~ ! [X4: $i] :
                      ( ( X1 @ X3 @ X4 )
                     => ~ ! [X5: $i] :
                            ( ( X1 @ X3 @ X5 )
                           => ( X4 = X5 ) ) ) )
           => ~ ! [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] :
                  ( ~ ! [X2: $i] :
                        ( ( X1 @ X2 )
                       => ~ ! [X3: $i] :
                              ( ( X1 @ X3 )
                             => ( X2 = X3 ) ) )
                 => ( 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 ) )
                 => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                        ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                       => ( X2 @ X3 ) )
                   => ( ! [X1: $o,X2: $i] :
                          ( ( in @ X2
                            @ ( dsetconstr @ ( powerset @ emptyset )
                              @ ^ [X3: $i] : X1 ) )
                         => X1 )
                     => ( ! [X1: $i] :
                            ( ( in @ X1 @ emptyset )
                           => ! [X2: $o] : X2 )
                       => ( sP2
                         => ( sP2
                           => ( ! [X1: $i > $o] :
                                  ( ~ ! [X2: $i] :
                                        ( ( X1 @ X2 )
                                       => ~ ! [X3: $i] :
                                              ( ( X1 @ X3 )
                                             => ( X2 = X3 ) ) )
                                 => ~ ! [X2: $i] :
                                        ~ ( X1 @ X2 ) )
                             => ( sP10
                               => ! [X1: $i] :
                                    ( ! [X2: $i] :
                                        ~ ( in @ X2 @ X1 )
                                   => ( X1 = emptyset ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h16,assumption,
    ! [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 ) ) ),
    introduced(assumption,[]) ).

thf(h17,assumption,
    ~ ( ! [X1: $i > $i > $o,X2: $i] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X2 )
             => ~ ! [X4: $i] :
                    ( ( X1 @ X3 @ X4 )
                   => ~ ! [X5: $i] :
                          ( ( X1 @ X3 @ X5 )
                         => ( X4 = X5 ) ) ) )
         => ~ ! [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] :
                ( ~ ! [X2: $i] :
                      ( ( X1 @ X2 )
                     => ~ ! [X3: $i] :
                            ( ( X1 @ X3 )
                           => ( X2 = X3 ) ) )
               => ( 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 ) )
               => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                      ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                     => ( X2 @ X3 ) )
                 => ( ! [X1: $o,X2: $i] :
                        ( ( in @ X2
                          @ ( dsetconstr @ ( powerset @ emptyset )
                            @ ^ [X3: $i] : X1 ) )
                       => X1 )
                   => ( ! [X1: $i] :
                          ( ( in @ X1 @ emptyset )
                         => ! [X2: $o] : X2 )
                     => ( sP2
                       => ( sP2
                         => ( ! [X1: $i > $o] :
                                ( ~ ! [X2: $i] :
                                      ( ( X1 @ X2 )
                                     => ~ ! [X3: $i] :
                                            ( ( X1 @ X3 )
                                           => ( X2 = X3 ) ) )
                               => ~ ! [X2: $i] :
                                      ~ ( X1 @ X2 ) )
                           => ( sP10
                             => ! [X1: $i] :
                                  ( ! [X2: $i] :
                                      ~ ( in @ X2 @ X1 )
                                 => ( X1 = emptyset ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h18,assumption,
    ! [X1: $i > $i > $o,X2: $i] :
      ( ! [X3: $i] :
          ( ( in @ X3 @ X2 )
         => ~ ! [X4: $i] :
                ( ( X1 @ X3 @ X4 )
               => ~ ! [X5: $i] :
                      ( ( X1 @ X3 @ X5 )
                     => ( X4 = X5 ) ) ) )
     => ~ ! [X3: $i] :
            ~ ! [X4: $i] :
                ( ( in @ X4 @ X3 )
                = ( ~ ! [X5: $i] :
                        ( ( in @ X5 @ X2 )
                       => ~ ( X1 @ X5 @ X4 ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h19,assumption,
    ~ ( ! [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] :
              ( ~ ! [X2: $i] :
                    ( ( X1 @ X2 )
                   => ~ ! [X3: $i] :
                          ( ( X1 @ X3 )
                         => ( X2 = X3 ) ) )
             => ( 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 ) )
             => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                    ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                   => ( X2 @ X3 ) )
               => ( ! [X1: $o,X2: $i] :
                      ( ( in @ X2
                        @ ( dsetconstr @ ( powerset @ emptyset )
                          @ ^ [X3: $i] : X1 ) )
                     => X1 )
                 => ( ! [X1: $i] :
                        ( ( in @ X1 @ emptyset )
                       => ! [X2: $o] : X2 )
                   => ( sP2
                     => ( sP2
                       => ( ! [X1: $i > $o] :
                              ( ~ ! [X2: $i] :
                                    ( ( X1 @ X2 )
                                   => ~ ! [X3: $i] :
                                          ( ( X1 @ X3 )
                                         => ( X2 = X3 ) ) )
                             => ~ ! [X2: $i] :
                                    ~ ( X1 @ X2 ) )
                         => ( sP10
                           => ! [X1: $i] :
                                ( ! [X2: $i] :
                                    ~ ( in @ X2 @ X1 )
                               => ( X1 = emptyset ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h20,assumption,
    ! [X1: $i] :
      ( ~ ! [X2: $i] :
            ~ ( in @ X2 @ X1 )
     => ~ ! [X2: $i] :
            ( ( in @ X2 @ X1 )
           => ~ ! [X3: $i] :
                  ( ( in @ X3 @ X2 )
                 => ~ ( in @ X3 @ X1 ) ) ) ),
    introduced(assumption,[]) ).

thf(h21,assumption,
    ~ ( ! [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] :
            ( ~ ! [X2: $i] :
                  ( ( X1 @ X2 )
                 => ~ ! [X3: $i] :
                        ( ( X1 @ X3 )
                       => ( X2 = X3 ) ) )
           => ( 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 ) )
           => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                  ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                 => ( X2 @ X3 ) )
             => ( ! [X1: $o,X2: $i] :
                    ( ( in @ X2
                      @ ( dsetconstr @ ( powerset @ emptyset )
                        @ ^ [X3: $i] : X1 ) )
                   => X1 )
               => ( ! [X1: $i] :
                      ( ( in @ X1 @ emptyset )
                     => ! [X2: $o] : X2 )
                 => ( sP2
                   => ( sP2
                     => ( ! [X1: $i > $o] :
                            ( ~ ! [X2: $i] :
                                  ( ( X1 @ X2 )
                                 => ~ ! [X3: $i] :
                                        ( ( X1 @ X3 )
                                       => ( X2 = X3 ) ) )
                           => ~ ! [X2: $i] :
                                  ~ ( X1 @ X2 ) )
                       => ( sP10
                         => ! [X1: $i] :
                              ( ! [X2: $i] :
                                  ~ ( in @ X2 @ X1 )
                             => ( X1 = emptyset ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h22,assumption,
    ! [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 ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h23,assumption,
    ~ ( ! [X1: $i > $o] :
          ( ~ ! [X2: $i] :
                ( ( X1 @ X2 )
               => ~ ! [X3: $i] :
                      ( ( X1 @ X3 )
                     => ( X2 = X3 ) ) )
         => ( 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 ) )
         => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
               => ( X2 @ X3 ) )
           => ( ! [X1: $o,X2: $i] :
                  ( ( in @ X2
                    @ ( dsetconstr @ ( powerset @ emptyset )
                      @ ^ [X3: $i] : X1 ) )
                 => X1 )
             => ( ! [X1: $i] :
                    ( ( in @ X1 @ emptyset )
                   => ! [X2: $o] : X2 )
               => ( sP2
                 => ( sP2
                   => ( ! [X1: $i > $o] :
                          ( ~ ! [X2: $i] :
                                ( ( X1 @ X2 )
                               => ~ ! [X3: $i] :
                                      ( ( X1 @ X3 )
                                     => ( X2 = X3 ) ) )
                         => ~ ! [X2: $i] :
                                ~ ( X1 @ X2 ) )
                     => ( sP10
                       => ! [X1: $i] :
                            ( ! [X2: $i] :
                                ~ ( in @ X2 @ X1 )
                           => ( X1 = emptyset ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h24,assumption,
    ! [X1: $i > $o] :
      ( ~ ! [X2: $i] :
            ( ( X1 @ X2 )
           => ~ ! [X3: $i] :
                  ( ( X1 @ X3 )
                 => ( X2 = X3 ) ) )
     => ( X1 @ ( descr @ X1 ) ) ),
    introduced(assumption,[]) ).

thf(h25,assumption,
    ~ ( ! [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 ) )
       => ( ! [X1: $i,X2: $i > $o,X3: $i] :
              ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
             => ( X2 @ X3 ) )
         => ( ! [X1: $o,X2: $i] :
                ( ( in @ X2
                  @ ( dsetconstr @ ( powerset @ emptyset )
                    @ ^ [X3: $i] : X1 ) )
               => X1 )
           => ( ! [X1: $i] :
                  ( ( in @ X1 @ emptyset )
                 => ! [X2: $o] : X2 )
             => ( sP2
               => ( sP2
                 => ( ! [X1: $i > $o] :
                        ( ~ ! [X2: $i] :
                              ( ( X1 @ X2 )
                             => ~ ! [X3: $i] :
                                    ( ( X1 @ X3 )
                                   => ( X2 = X3 ) ) )
                       => ~ ! [X2: $i] :
                              ~ ( X1 @ X2 ) )
                   => ( sP10
                     => ! [X1: $i] :
                          ( ! [X2: $i] :
                              ~ ( in @ X2 @ X1 )
                         => ( X1 = emptyset ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h26,assumption,
    ! [X1: $i,X2: $i > $o,X3: $i] :
      ( ( in @ X3 @ X1 )
     => ( ( X2 @ X3 )
       => ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) ) ) ),
    introduced(assumption,[]) ).

thf(h27,assumption,
    ~ ( ! [X1: $i,X2: $i > $o,X3: $i] :
          ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
         => ( in @ X3 @ X1 ) )
     => ( ! [X1: $i,X2: $i > $o,X3: $i] :
            ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
           => ( X2 @ X3 ) )
       => ( ! [X1: $o,X2: $i] :
              ( ( in @ X2
                @ ( dsetconstr @ ( powerset @ emptyset )
                  @ ^ [X3: $i] : X1 ) )
             => X1 )
         => ( ! [X1: $i] :
                ( ( in @ X1 @ emptyset )
               => ! [X2: $o] : X2 )
           => ( sP2
             => ( sP2
               => ( ! [X1: $i > $o] :
                      ( ~ ! [X2: $i] :
                            ( ( X1 @ X2 )
                           => ~ ! [X3: $i] :
                                  ( ( X1 @ X3 )
                                 => ( X2 = X3 ) ) )
                     => ~ ! [X2: $i] :
                            ~ ( X1 @ X2 ) )
                 => ( sP10
                   => ! [X1: $i] :
                        ( ! [X2: $i] :
                            ~ ( in @ X2 @ X1 )
                       => ( X1 = emptyset ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h28,assumption,
    ! [X1: $i,X2: $i > $o,X3: $i] :
      ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
     => ( in @ X3 @ X1 ) ),
    introduced(assumption,[]) ).

thf(h29,assumption,
    ~ ( ! [X1: $i,X2: $i > $o,X3: $i] :
          ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
         => ( X2 @ X3 ) )
     => ( ! [X1: $o,X2: $i] :
            ( ( in @ X2
              @ ( dsetconstr @ ( powerset @ emptyset )
                @ ^ [X3: $i] : X1 ) )
           => X1 )
       => ( ! [X1: $i] :
              ( ( in @ X1 @ emptyset )
             => ! [X2: $o] : X2 )
         => ( sP2
           => ( sP2
             => ( ! [X1: $i > $o] :
                    ( ~ ! [X2: $i] :
                          ( ( X1 @ X2 )
                         => ~ ! [X3: $i] :
                                ( ( X1 @ X3 )
                               => ( X2 = X3 ) ) )
                   => ~ ! [X2: $i] :
                          ~ ( X1 @ X2 ) )
               => ( sP10
                 => ! [X1: $i] :
                      ( ! [X2: $i] :
                          ~ ( in @ X2 @ X1 )
                     => ( X1 = emptyset ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h30,assumption,
    ! [X1: $i,X2: $i > $o,X3: $i] :
      ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
     => ( X2 @ X3 ) ),
    introduced(assumption,[]) ).

thf(h31,assumption,
    ~ ( ! [X1: $o,X2: $i] :
          ( ( in @ X2
            @ ( dsetconstr @ ( powerset @ emptyset )
              @ ^ [X3: $i] : X1 ) )
         => X1 )
     => ( ! [X1: $i] :
            ( ( in @ X1 @ emptyset )
           => ! [X2: $o] : X2 )
       => ( sP2
         => ( sP2
           => ( ! [X1: $i > $o] :
                  ( ~ ! [X2: $i] :
                        ( ( X1 @ X2 )
                       => ~ ! [X3: $i] :
                              ( ( X1 @ X3 )
                             => ( X2 = X3 ) ) )
                 => ~ ! [X2: $i] :
                        ~ ( X1 @ X2 ) )
             => ( sP10
               => ! [X1: $i] :
                    ( ! [X2: $i] :
                        ~ ( in @ X2 @ X1 )
                   => ( X1 = emptyset ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h32,assumption,
    ! [X1: $o,X2: $i] :
      ( ( in @ X2
        @ ( dsetconstr @ ( powerset @ emptyset )
          @ ^ [X3: $i] : X1 ) )
     => X1 ),
    introduced(assumption,[]) ).

thf(h33,assumption,
    ~ ( ! [X1: $i] :
          ( ( in @ X1 @ emptyset )
         => ! [X2: $o] : X2 )
     => ( sP2
       => ( sP2
         => ( ! [X1: $i > $o] :
                ( ~ ! [X2: $i] :
                      ( ( X1 @ X2 )
                     => ~ ! [X3: $i] :
                            ( ( X1 @ X3 )
                           => ( X2 = X3 ) ) )
               => ~ ! [X2: $i] :
                      ~ ( X1 @ X2 ) )
           => ( sP10
             => ! [X1: $i] :
                  ( ! [X2: $i] :
                      ~ ( in @ X2 @ X1 )
                 => ( X1 = emptyset ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h34,assumption,
    ! [X1: $i] :
      ( ( in @ X1 @ emptyset )
     => ! [X2: $o] : X2 ),
    introduced(assumption,[]) ).

thf(h35,assumption,
    ~ ( sP2
     => ( sP2
       => ( ! [X1: $i > $o] :
              ( ~ ! [X2: $i] :
                    ( ( X1 @ X2 )
                   => ~ ! [X3: $i] :
                          ( ( X1 @ X3 )
                         => ( X2 = X3 ) ) )
             => ~ ! [X2: $i] :
                    ~ ( X1 @ X2 ) )
         => ( sP10
           => ! [X1: $i] :
                ( ! [X2: $i] :
                    ~ ( in @ X2 @ X1 )
               => ( X1 = emptyset ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h36,assumption,
    ~ ( sP2
     => ( ! [X1: $i > $o] :
            ( ~ ! [X2: $i] :
                  ( ( X1 @ X2 )
                 => ~ ! [X3: $i] :
                        ( ( X1 @ X3 )
                       => ( X2 = X3 ) ) )
           => ~ ! [X2: $i] :
                  ~ ( X1 @ X2 ) )
       => ( sP10
         => ! [X1: $i] :
              ( ! [X2: $i] :
                  ~ ( in @ X2 @ X1 )
             => ( X1 = emptyset ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h37,assumption,
    ~ ( ! [X1: $i > $o] :
          ( ~ ! [X2: $i] :
                ( ( X1 @ X2 )
               => ~ ! [X3: $i] :
                      ( ( X1 @ X3 )
                     => ( X2 = X3 ) ) )
         => ~ ! [X2: $i] :
                ~ ( X1 @ X2 ) )
     => ( sP10
       => ! [X1: $i] :
            ( ! [X2: $i] :
                ~ ( in @ X2 @ X1 )
           => ( X1 = emptyset ) ) ) ),
    introduced(assumption,[]) ).

thf(h38,assumption,
    ! [X1: $i > $o] :
      ( ~ ! [X2: $i] :
            ( ( X1 @ X2 )
           => ~ ! [X3: $i] :
                  ( ( X1 @ X3 )
                 => ( X2 = X3 ) ) )
     => ~ ! [X2: $i] :
            ~ ( X1 @ X2 ) ),
    introduced(assumption,[]) ).

thf(h39,assumption,
    ~ ( sP10
     => ! [X1: $i] :
          ( ! [X2: $i] :
              ~ ( in @ X2 @ X1 )
         => ( X1 = emptyset ) ) ),
    introduced(assumption,[]) ).

thf(h40,assumption,
    sP10,
    introduced(assumption,[]) ).

thf(h41,assumption,
    ~ ! [X1: $i] :
        ( ! [X2: $i] :
            ~ ( in @ X2 @ X1 )
       => ( X1 = emptyset ) ),
    introduced(assumption,[]) ).

thf(h42,assumption,
    ~ ( sP1
     => sP11 ),
    introduced(assumption,[]) ).

thf(h43,assumption,
    sP1,
    introduced(assumption,[]) ).

thf(h44,assumption,
    ~ sP11,
    introduced(assumption,[]) ).

thf(1,plain,
    ( ~ sP2
    | ~ sP4 ),
    inference(all_rule,[status(thm)],]) ).

thf(2,plain,
    ( ~ sP1
    | ~ sP8 ),
    inference(all_rule,[status(thm)],]) ).

thf(3,plain,
    ( sP3
    | sP4 ),
    inference(prop_rule,[status(thm)],]) ).

thf(4,plain,
    ( sP12
    | sP8 ),
    inference(prop_rule,[status(thm)],]) ).

thf(5,plain,
    ( sP6
    | ~ sP3 ),
    inference(eigen_choice_rule,[status(thm),assumptions([h0])],[h0,eigendef_eigen__13]) ).

thf(6,plain,
    ( ~ sP9
    | ~ sP6
    | sP11 ),
    inference(prop_rule,[status(thm)],]) ).

thf(7,plain,
    ( sP7
    | ~ sP12 ),
    inference(eigen_choice_rule,[status(thm),assumptions([h0])],[h0,eigendef_eigen__10]) ).

thf(8,plain,
    ( ~ sP5
    | ~ sP7
    | sP9 ),
    inference(prop_rule,[status(thm)],]) ).

thf(9,plain,
    ( ~ sP13
    | sP5 ),
    inference(all_rule,[status(thm)],]) ).

thf(10,plain,
    ( ~ sP10
    | sP13 ),
    inference(all_rule,[status(thm)],]) ).

thf(11,plain,
    $false,
    inference(prop_unsat,[status(thm),assumptions([h43,h44,h42,h40,h41,h38,h39,h4,h37,h4,h36,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0])],[1,2,3,4,5,6,7,8,9,10,h4,h40,h43,h44]) ).

thf(12,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h42,h40,h41,h38,h39,h4,h37,h4,h36,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h43,h44])],[h42,11,h43,h44]) ).

thf(13,plain,
    $false,
    inference(tab_negall,[status(thm),assumptions([h40,h41,h38,h39,h4,h37,h4,h36,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negall(discharge,[h42]),tab_negall(eigenvar,eigen__0)],[h41,12,h42]) ).

thf(14,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h38,h39,h4,h37,h4,h36,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h40,h41])],[h39,13,h40,h41]) ).

thf(15,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h4,h37,h4,h36,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h38,h39])],[h37,14,h38,h39]) ).

thf(16,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h4,h36,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h4,h37])],[h36,15,h4,h37]) ).

thf(17,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h4,h36])],[h35,16,h4,h36]) ).

thf(18,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h34,h35])],[h33,17,h34,h35]) ).

thf(19,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h32,h33])],[h31,18,h32,h33]) ).

thf(20,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h30,h31])],[h29,19,h30,h31]) ).

thf(21,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h28,h29])],[h27,20,h28,h29]) ).

thf(22,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h26,h27])],[h25,21,h26,h27]) ).

thf(23,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h24,h25])],[h23,22,h24,h25]) ).

thf(24,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h22,h23])],[h21,23,h22,h23]) ).

thf(25,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h20,h21])],[h19,24,h20,h21]) ).

thf(26,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h18,h19])],[h17,25,h18,h19]) ).

thf(27,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h16,h17])],[h15,26,h16,h17]) ).

thf(28,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h14,h15])],[h13,27,h14,h15]) ).

thf(29,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h12,h13])],[h11,28,h12,h13]) ).

thf(30,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h10,h11])],[h9,29,h10,h11]) ).

thf(31,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h8,h9])],[h7,30,h8,h9]) ).

thf(32,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h6,h7])],[h5,31,h6,h7]) ).

thf(33,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h2,h3,h1,h0]),tab_negimp(discharge,[h4,h5])],[h3,32,h4,h5]) ).

thf(34,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h1,h0]),tab_negimp(discharge,[h2,h3])],[h1,33,h2,h3]) ).

thf(35,plain,
    $false,
    inference(eigenvar_choice,[status(thm),assumptions([h1]),eigenvar_choice(discharge,[h0])],[34,h0]) ).

thf(0,theorem,
    ( ! [X1: $i,X2: $i] :
        ( ! [X3: $i] :
            ( ( in @ X3 @ X1 )
            = ( in @ X3 @ X2 ) )
       => ( X1 = X2 ) )
   => ( sP2
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
            = ( ( X3 != X1 )
             => ( in @ X3 @ X2 ) ) )
       => ( ! [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 )
                           => ~ ! [X4: $i] :
                                  ( ( X1 @ X3 @ X4 )
                                 => ~ ! [X5: $i] :
                                        ( ( X1 @ X3 @ X5 )
                                       => ( X4 = X5 ) ) ) )
                       => ~ ! [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] :
                              ( ~ ! [X2: $i] :
                                    ( ( X1 @ X2 )
                                   => ~ ! [X3: $i] :
                                          ( ( X1 @ X3 )
                                         => ( X2 = X3 ) ) )
                             => ( 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 ) )
                             => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                    ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                   => ( X2 @ X3 ) )
                               => ( ! [X1: $o,X2: $i] :
                                      ( ( in @ X2
                                        @ ( dsetconstr @ ( powerset @ emptyset )
                                          @ ^ [X3: $i] : X1 ) )
                                     => X1 )
                                 => ( ! [X1: $i] :
                                        ( ( in @ X1 @ emptyset )
                                       => ! [X2: $o] : X2 )
                                   => ( sP2
                                     => ( sP2
                                       => ( ! [X1: $i > $o] :
                                              ( ~ ! [X2: $i] :
                                                    ( ( X1 @ X2 )
                                                   => ~ ! [X3: $i] :
                                                          ( ( X1 @ X3 )
                                                         => ( X2 = X3 ) ) )
                                             => ~ ! [X2: $i] :
                                                    ~ ( X1 @ X2 ) )
                                         => ( sP10
                                           => ! [X1: $i] :
                                                ( ! [X2: $i] :
                                                    ~ ( in @ X2 @ X1 )
                                               => ( X1 = emptyset ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    inference(contra,[status(thm),contra(discharge,[h1])],[34,h1]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.11/0.12  % Problem  : SEU506^1 : TPTP v8.1.2. Released v3.7.0.
% 0.11/0.12  % Command  : lash -P picomus -M modes -p tstp -t %d %s
% 0.13/0.33  % Computer : n027.cluster.edu
% 0.13/0.33  % Model    : x86_64 x86_64
% 0.13/0.33  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.33  % Memory   : 8042.1875MB
% 0.13/0.33  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.13/0.33  % CPULimit : 300
% 0.13/0.33  % WCLimit  : 300
% 0.13/0.33  % DateTime : Wed Aug 23 20:28:47 EDT 2023
% 0.13/0.34  % CPUTime  : 
% 24.56/24.54  % SZS status Theorem
% 24.56/24.54  % Mode: cade22grackle2x798d
% 24.56/24.54  % Steps: 83465
% 24.56/24.54  % SZS output start Proof
% See solution above
%------------------------------------------------------------------------------