TPTP Problem File: SLH0782^1.p

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%------------------------------------------------------------------------------
% File     : SLH0000^1 : TPTP v8.2.0. Released v8.2.0.
% Domain   : Archive of Formal Proofs
% Problem  :
% Version  : Especial.
% English  :

% Refs     : [Des23] Desharnais (2023), Email to Geoff Sutcliffe
% Source   : [Des23]
% Names    : Pluennecke_Ruzsa_Inequality/0003_Pluennecke_Ruzsa_Inequality/prob_00329_011339__12185874_1 [Des23]

% Status   : Theorem
% Rating   : ? v8.2.0
% Syntax   : Number of formulae    : 1351 ( 497 unt;  84 typ;   0 def)
%            Number of atoms       : 3654 (1112 equ;   0 cnn)
%            Maximal formula atoms :   13 (   2 avg)
%            Number of connectives : 12620 ( 401   ~;  54   |; 264   &;10071   @)
%                                         (   0 <=>;1830  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   19 (   7 avg)
%            Number of types       :    7 (   6 usr)
%            Number of type conns  :  810 ( 810   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   79 (  78 usr;  13 con; 0-5 aty)
%            Number of variables   : 3686 ( 159   ^;3422   !; 105   ?;3686   :)
% SPC      : TH0_THM_EQU_NAR

% Comments : This file was generated by Isabelle (most likely Sledgehammer)
%            2023-01-18 16:20:37.920
%------------------------------------------------------------------------------
% Could-be-implicit typings (6)
thf(ty_n_t__Set__Oset_It__Set__Oset_It__Nat__Onat_J_J,type,
    set_set_nat: $tType ).

thf(ty_n_t__Set__Oset_It__Set__Oset_Itf__a_J_J,type,
    set_set_a: $tType ).

thf(ty_n_t__Set__Oset_It__Nat__Onat_J,type,
    set_nat: $tType ).

thf(ty_n_t__Set__Oset_Itf__a_J,type,
    set_a: $tType ).

thf(ty_n_t__Nat__Onat,type,
    nat: $tType ).

thf(ty_n_tf__a,type,
    a: $tType ).

% Explicit typings (78)
thf(sy_c_Finite__Set_Ocard_001t__Nat__Onat,type,
    finite_card_nat: set_nat > nat ).

thf(sy_c_Finite__Set_Ocard_001tf__a,type,
    finite_card_a: set_a > nat ).

thf(sy_c_Finite__Set_Ofinite_001t__Nat__Onat,type,
    finite_finite_nat: set_nat > $o ).

thf(sy_c_Finite__Set_Ofinite_001t__Set__Oset_Itf__a_J,type,
    finite_finite_set_a: set_set_a > $o ).

thf(sy_c_Finite__Set_Ofinite_001tf__a,type,
    finite_finite_a: set_a > $o ).

thf(sy_c_Group__Theory_Oabelian__group_001tf__a,type,
    group_201663378560352916roup_a: set_a > ( a > a > a ) > a > $o ).

thf(sy_c_Group__Theory_Ocommutative__monoid_001t__Nat__Onat,type,
    group_6791354081887936081id_nat: set_nat > ( nat > nat > nat ) > nat > $o ).

thf(sy_c_Group__Theory_Ocommutative__monoid_001tf__a,type,
    group_4866109990395492029noid_a: set_a > ( a > a > a ) > a > $o ).

thf(sy_c_Group__Theory_Ogroup_001t__Nat__Onat,type,
    group_group_nat: set_nat > ( nat > nat > nat ) > nat > $o ).

thf(sy_c_Group__Theory_Ogroup_001tf__a,type,
    group_group_a: set_a > ( a > a > a ) > a > $o ).

thf(sy_c_Group__Theory_Omonoid_001t__Nat__Onat,type,
    group_monoid_nat: set_nat > ( nat > nat > nat ) > nat > $o ).

thf(sy_c_Group__Theory_Omonoid_001tf__a,type,
    group_monoid_a: set_a > ( a > a > a ) > a > $o ).

thf(sy_c_Group__Theory_Omonoid_OUnits_001t__Nat__Onat,type,
    group_Units_nat: set_nat > ( nat > nat > nat ) > nat > set_nat ).

thf(sy_c_Group__Theory_Omonoid_OUnits_001tf__a,type,
    group_Units_a: set_a > ( a > a > a ) > a > set_a ).

thf(sy_c_Group__Theory_Omonoid_Oinverse_001t__Nat__Onat,type,
    group_inverse_nat: set_nat > ( nat > nat > nat ) > nat > nat > nat ).

thf(sy_c_Group__Theory_Omonoid_Oinverse_001tf__a,type,
    group_inverse_a: set_a > ( a > a > a ) > a > a > a ).

thf(sy_c_Group__Theory_Omonoid_Oinvertible_001t__Nat__Onat,type,
    group_invertible_nat: set_nat > ( nat > nat > nat ) > nat > nat > $o ).

thf(sy_c_Group__Theory_Omonoid_Oinvertible_001tf__a,type,
    group_invertible_a: set_a > ( a > a > a ) > a > a > $o ).

thf(sy_c_Group__Theory_Osubgroup_001t__Nat__Onat,type,
    group_subgroup_nat: set_nat > set_nat > ( nat > nat > nat ) > nat > $o ).

thf(sy_c_Group__Theory_Osubgroup_001tf__a,type,
    group_subgroup_a: set_a > set_a > ( a > a > a ) > a > $o ).

thf(sy_c_Groups_Ominus__class_Ominus_001t__Nat__Onat,type,
    minus_minus_nat: nat > nat > nat ).

thf(sy_c_Groups_Ominus__class_Ominus_001t__Set__Oset_It__Nat__Onat_J,type,
    minus_minus_set_nat: set_nat > set_nat > set_nat ).

thf(sy_c_Groups_Ominus__class_Ominus_001t__Set__Oset_Itf__a_J,type,
    minus_minus_set_a: set_a > set_a > set_a ).

thf(sy_c_Groups_Oone__class_Oone_001t__Nat__Onat,type,
    one_one_nat: nat ).

thf(sy_c_Groups_Ozero__class_Ozero_001t__Nat__Onat,type,
    zero_zero_nat: nat ).

thf(sy_c_HOL_ONO__MATCH_001t__Set__Oset_Itf__a_J_001t__Set__Oset_Itf__a_J,type,
    nO_MATCH_set_a_set_a: set_a > set_a > $o ).

thf(sy_c_HOL_Oundefined_001tf__a,type,
    undefined_a: a ).

thf(sy_c_Lattices_Oinf__class_Oinf_001t__Nat__Onat,type,
    inf_inf_nat: nat > nat > nat ).

thf(sy_c_Lattices_Oinf__class_Oinf_001t__Set__Oset_It__Nat__Onat_J,type,
    inf_inf_set_nat: set_nat > set_nat > set_nat ).

thf(sy_c_Lattices_Oinf__class_Oinf_001t__Set__Oset_Itf__a_J,type,
    inf_inf_set_a: set_a > set_a > set_a ).

thf(sy_c_Lattices_Osup__class_Osup_001t__Nat__Onat,type,
    sup_sup_nat: nat > nat > nat ).

thf(sy_c_Lattices_Osup__class_Osup_001t__Set__Oset_It__Nat__Onat_J,type,
    sup_sup_set_nat: set_nat > set_nat > set_nat ).

thf(sy_c_Lattices_Osup__class_Osup_001t__Set__Oset_Itf__a_J,type,
    sup_sup_set_a: set_a > set_a > set_a ).

thf(sy_c_Nat_OSuc,type,
    suc: nat > nat ).

thf(sy_c_Orderings_Obot__class_Obot_001_062_Itf__a_M_Eo_J,type,
    bot_bot_a_o: a > $o ).

thf(sy_c_Orderings_Obot__class_Obot_001t__Nat__Onat,type,
    bot_bot_nat: nat ).

thf(sy_c_Orderings_Obot__class_Obot_001t__Set__Oset_It__Nat__Onat_J,type,
    bot_bot_set_nat: set_nat ).

thf(sy_c_Orderings_Obot__class_Obot_001t__Set__Oset_It__Set__Oset_Itf__a_J_J,type,
    bot_bot_set_set_a: set_set_a ).

thf(sy_c_Orderings_Obot__class_Obot_001t__Set__Oset_Itf__a_J,type,
    bot_bot_set_a: set_a ).

thf(sy_c_Orderings_Oord__class_Oless_001t__Nat__Onat,type,
    ord_less_nat: nat > nat > $o ).

thf(sy_c_Orderings_Oord__class_Oless_001t__Set__Oset_It__Nat__Onat_J,type,
    ord_less_set_nat: set_nat > set_nat > $o ).

thf(sy_c_Orderings_Oord__class_Oless_001t__Set__Oset_Itf__a_J,type,
    ord_less_set_a: set_a > set_a > $o ).

thf(sy_c_Orderings_Oord__class_Oless__eq_001t__Nat__Onat,type,
    ord_less_eq_nat: nat > nat > $o ).

thf(sy_c_Orderings_Oord__class_Oless__eq_001t__Set__Oset_It__Nat__Onat_J,type,
    ord_less_eq_set_nat: set_nat > set_nat > $o ).

thf(sy_c_Orderings_Oord__class_Oless__eq_001t__Set__Oset_Itf__a_J,type,
    ord_less_eq_set_a: set_a > set_a > $o ).

thf(sy_c_Pluennecke__Ruzsa__Inequality_Oadditive__abelian__group_001t__Nat__Onat,type,
    pluenn2073725187428264546up_nat: set_nat > ( nat > nat > nat ) > nat > $o ).

thf(sy_c_Pluennecke__Ruzsa__Inequality_Oadditive__abelian__group_001tf__a,type,
    pluenn1164192988769422572roup_a: set_a > ( a > a > a ) > a > $o ).

thf(sy_c_Pluennecke__Ruzsa__Inequality_Oadditive__abelian__group_Ominusset_001t__Nat__Onat,type,
    pluenn7323955030898006884et_nat: set_nat > ( nat > nat > nat ) > nat > set_nat > set_nat ).

thf(sy_c_Pluennecke__Ruzsa__Inequality_Oadditive__abelian__group_Ominusset_001tf__a,type,
    pluenn2534204936789923946sset_a: set_a > ( a > a > a ) > a > set_a > set_a ).

thf(sy_c_Pluennecke__Ruzsa__Inequality_Oadditive__abelian__group_Ominussetp_001t__Nat__Onat,type,
    pluenn8372939692575285934tp_nat: set_nat > ( nat > nat > nat ) > nat > ( nat > $o ) > nat > $o ).

thf(sy_c_Pluennecke__Ruzsa__Inequality_Oadditive__abelian__group_Ominussetp_001tf__a,type,
    pluenn1126946703085653920setp_a: set_a > ( a > a > a ) > a > ( a > $o ) > a > $o ).

thf(sy_c_Pluennecke__Ruzsa__Inequality_Oadditive__abelian__group_Osumset_001t__Nat__Onat,type,
    pluenn3669378163024332905et_nat: set_nat > ( nat > nat > nat ) > set_nat > set_nat > set_nat ).

thf(sy_c_Pluennecke__Ruzsa__Inequality_Oadditive__abelian__group_Osumset_001tf__a,type,
    pluenn3038260743871226533mset_a: set_a > ( a > a > a ) > set_a > set_a > set_a ).

thf(sy_c_Pluennecke__Ruzsa__Inequality_Oadditive__abelian__group_Osumset__iterated_001t__Nat__Onat,type,
    pluenn7055013279391836755ed_nat: set_nat > ( nat > nat > nat ) > nat > set_nat > nat > set_nat ).

thf(sy_c_Pluennecke__Ruzsa__Inequality_Oadditive__abelian__group_Osumset__iterated_001tf__a,type,
    pluenn1960970773371692859ated_a: set_a > ( a > a > a ) > a > set_a > nat > set_a ).

thf(sy_c_Pluennecke__Ruzsa__Inequality_Oadditive__abelian__group_Osumsetp_001t__Nat__Onat,type,
    pluenn5670965976768739049tp_nat: set_nat > ( nat > nat > nat ) > ( nat > $o ) > ( nat > $o ) > nat > $o ).

thf(sy_c_Pluennecke__Ruzsa__Inequality_Oadditive__abelian__group_Osumsetp_001tf__a,type,
    pluenn895083305082786853setp_a: set_a > ( a > a > a ) > ( a > $o ) > ( a > $o ) > a > $o ).

thf(sy_c_Set_OCollect_001t__Nat__Onat,type,
    collect_nat: ( nat > $o ) > set_nat ).

thf(sy_c_Set_OCollect_001tf__a,type,
    collect_a: ( a > $o ) > set_a ).

thf(sy_c_Set_Oimage_001t__Nat__Onat_001t__Nat__Onat,type,
    image_nat_nat: ( nat > nat ) > set_nat > set_nat ).

thf(sy_c_Set_Oimage_001t__Nat__Onat_001tf__a,type,
    image_nat_a: ( nat > a ) > set_nat > set_a ).

thf(sy_c_Set_Oimage_001t__Set__Oset_It__Nat__Onat_J_001t__Set__Oset_It__Nat__Onat_J,type,
    image_7916887816326733075et_nat: ( set_nat > set_nat ) > set_set_nat > set_set_nat ).

thf(sy_c_Set_Oimage_001t__Set__Oset_Itf__a_J_001t__Set__Oset_Itf__a_J,type,
    image_set_a_set_a: ( set_a > set_a ) > set_set_a > set_set_a ).

thf(sy_c_Set_Oimage_001tf__a_001t__Nat__Onat,type,
    image_a_nat: ( a > nat ) > set_a > set_nat ).

thf(sy_c_Set_Oimage_001tf__a_001tf__a,type,
    image_a_a: ( a > a ) > set_a > set_a ).

thf(sy_c_Set_Oinsert_001t__Nat__Onat,type,
    insert_nat: nat > set_nat > set_nat ).

thf(sy_c_Set_Oinsert_001tf__a,type,
    insert_a: a > set_a > set_a ).

thf(sy_c_member_001t__Nat__Onat,type,
    member_nat: nat > set_nat > $o ).

thf(sy_c_member_001t__Set__Oset_It__Nat__Onat_J,type,
    member_set_nat: set_nat > set_set_nat > $o ).

thf(sy_c_member_001t__Set__Oset_Itf__a_J,type,
    member_set_a: set_a > set_set_a > $o ).

thf(sy_c_member_001tf__a,type,
    member_a: a > set_a > $o ).

thf(sy_v_G,type,
    g: set_a ).

thf(sy_v_U,type,
    u: set_a ).

thf(sy_v_V,type,
    v: set_a ).

thf(sy_v_W,type,
    w: set_a ).

thf(sy_v_addition,type,
    addition: a > a > a ).

thf(sy_v_thesis____,type,
    thesis: $o ).

thf(sy_v_zero,type,
    zero: a ).

% Relevant facts (1265)
thf(fact_0_commutative,axiom,
    ! [X: a,Y: a] :
      ( ( member_a @ X @ g )
     => ( ( member_a @ Y @ g )
       => ( ( addition @ X @ Y )
          = ( addition @ Y @ X ) ) ) ) ).

% commutative
thf(fact_1_sumset_Ocases,axiom,
    ! [A: a,A2: set_a,B: set_a] :
      ( ( member_a @ A @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) )
     => ~ ! [A3: a,B2: a] :
            ( ( A
              = ( addition @ A3 @ B2 ) )
           => ( ( member_a @ A3 @ A2 )
             => ( ( member_a @ A3 @ g )
               => ( ( member_a @ B2 @ B )
                 => ~ ( member_a @ B2 @ g ) ) ) ) ) ) ).

% sumset.cases
thf(fact_2_sumset_Osimps,axiom,
    ! [A: a,A2: set_a,B: set_a] :
      ( ( member_a @ A @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) )
      = ( ? [A4: a,B3: a] :
            ( ( A
              = ( addition @ A4 @ B3 ) )
            & ( member_a @ A4 @ A2 )
            & ( member_a @ A4 @ g )
            & ( member_a @ B3 @ B )
            & ( member_a @ B3 @ g ) ) ) ) ).

% sumset.simps
thf(fact_3_sumset_OsumsetI,axiom,
    ! [A: a,A2: set_a,B4: a,B: set_a] :
      ( ( member_a @ A @ A2 )
     => ( ( member_a @ A @ g )
       => ( ( member_a @ B4 @ B )
         => ( ( member_a @ B4 @ g )
           => ( member_a @ ( addition @ A @ B4 ) @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) ) ) ) ) ) ).

% sumset.sumsetI
thf(fact_4_sumset__assoc,axiom,
    ! [A2: set_a,B: set_a,C: set_a] :
      ( ( pluenn3038260743871226533mset_a @ g @ addition @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) @ C )
      = ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ ( pluenn3038260743871226533mset_a @ g @ addition @ B @ C ) ) ) ).

% sumset_assoc
thf(fact_5_sumset__commute,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B )
      = ( pluenn3038260743871226533mset_a @ g @ addition @ B @ A2 ) ) ).

% sumset_commute
thf(fact_6__092_060open_062_092_060And_062x_O_Ax_A_092_060in_062_Adifferenceset_AV_AW_A_092_060Longrightarrow_062_A_092_060exists_062v_Aw_O_Av_A_092_060in_062_AV_A_092_060and_062_Aw_A_092_060in_062_AW_A_092_060and_062_Ax_A_061_Av_A_092_060ominus_062_Aw_092_060close_062,axiom,
    ! [X: a] :
      ( ( member_a @ X @ ( pluenn3038260743871226533mset_a @ g @ addition @ v @ ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ w ) ) )
     => ? [V: a,W: a] :
          ( ( member_a @ V @ v )
          & ( member_a @ W @ w )
          & ( X
            = ( addition @ V @ ( group_inverse_a @ g @ addition @ zero @ W ) ) ) ) ) ).

% \<open>\<And>x. x \<in> differenceset V W \<Longrightarrow> \<exists>v w. v \<in> V \<and> w \<in> W \<and> x = v \<ominus> w\<close>
thf(fact_7_local_Oinverse__unique,axiom,
    ! [U: a,V2: a,V3: a] :
      ( ( ( addition @ U @ V2 )
        = zero )
     => ( ( ( addition @ V3 @ U )
          = zero )
       => ( ( member_a @ U @ g )
         => ( ( member_a @ V3 @ g )
           => ( ( member_a @ V2 @ g )
             => ( V3 = V2 ) ) ) ) ) ) ).

% local.inverse_unique
thf(fact_8_inverse__closed,axiom,
    ! [X: a] :
      ( ( member_a @ X @ g )
     => ( member_a @ ( group_inverse_a @ g @ addition @ zero @ X ) @ g ) ) ).

% inverse_closed
thf(fact_9_inverse__equality,axiom,
    ! [U: a,V3: a] :
      ( ( ( addition @ U @ V3 )
        = zero )
     => ( ( ( addition @ V3 @ U )
          = zero )
       => ( ( member_a @ U @ g )
         => ( ( member_a @ V3 @ g )
           => ( ( group_inverse_a @ g @ addition @ zero @ U )
              = V3 ) ) ) ) ) ).

% inverse_equality
thf(fact_10_minusset__distrib__sum,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) )
      = ( pluenn3038260743871226533mset_a @ g @ addition @ ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ A2 ) @ ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ B ) ) ) ).

% minusset_distrib_sum
thf(fact_11_minusset_Ocases,axiom,
    ! [A: a,A2: set_a] :
      ( ( member_a @ A @ ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ A2 ) )
     => ~ ! [A3: a] :
            ( ( A
              = ( group_inverse_a @ g @ addition @ zero @ A3 ) )
           => ( ( member_a @ A3 @ A2 )
             => ~ ( member_a @ A3 @ g ) ) ) ) ).

% minusset.cases
thf(fact_12_minusset_OminussetI,axiom,
    ! [A: a,A2: set_a] :
      ( ( member_a @ A @ A2 )
     => ( ( member_a @ A @ g )
       => ( member_a @ ( group_inverse_a @ g @ addition @ zero @ A ) @ ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ A2 ) ) ) ) ).

% minusset.minussetI
thf(fact_13_minusset_Osimps,axiom,
    ! [A: a,A2: set_a] :
      ( ( member_a @ A @ ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ A2 ) )
      = ( ? [A4: a] :
            ( ( A
              = ( group_inverse_a @ g @ addition @ zero @ A4 ) )
            & ( member_a @ A4 @ A2 )
            & ( member_a @ A4 @ g ) ) ) ) ).

% minusset.simps
thf(fact_14_assms_I5_J,axiom,
    finite_finite_a @ w ).

% assms(5)
thf(fact_15_assms_I3_J,axiom,
    finite_finite_a @ v ).

% assms(3)
thf(fact_16_associative,axiom,
    ! [A: a,B4: a,C2: a] :
      ( ( member_a @ A @ g )
     => ( ( member_a @ B4 @ g )
       => ( ( member_a @ C2 @ g )
         => ( ( addition @ ( addition @ A @ B4 ) @ C2 )
            = ( addition @ A @ ( addition @ B4 @ C2 ) ) ) ) ) ) ).

% associative
thf(fact_17_composition__closed,axiom,
    ! [A: a,B4: a] :
      ( ( member_a @ A @ g )
     => ( ( member_a @ B4 @ g )
       => ( member_a @ ( addition @ A @ B4 ) @ g ) ) ) ).

% composition_closed
thf(fact_18_unit__closed,axiom,
    member_a @ zero @ g ).

% unit_closed
thf(fact_19_assms_I6_J,axiom,
    ord_less_eq_set_a @ w @ g ).

% assms(6)
thf(fact_20_assms_I4_J,axiom,
    ord_less_eq_set_a @ v @ g ).

% assms(4)
thf(fact_21_left__unit,axiom,
    ! [A: a] :
      ( ( member_a @ A @ g )
     => ( ( addition @ zero @ A )
        = A ) ) ).

% left_unit
thf(fact_22_right__unit,axiom,
    ! [A: a] :
      ( ( member_a @ A @ g )
     => ( ( addition @ A @ zero )
        = A ) ) ).

% right_unit
thf(fact_23_inverse__unit,axiom,
    ( ( group_inverse_a @ g @ addition @ zero @ zero )
    = zero ) ).

% inverse_unit
thf(fact_24_differenceset__commute,axiom,
    ! [B: set_a,A2: set_a] :
      ( ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ ( pluenn3038260743871226533mset_a @ g @ addition @ B @ ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ A2 ) ) )
      = ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ B ) ) ) ).

% differenceset_commute
thf(fact_25_additive__abelian__group__axioms,axiom,
    pluenn1164192988769422572roup_a @ g @ addition @ zero ).

% additive_abelian_group_axioms
thf(fact_26_commutative__monoid__axioms,axiom,
    group_4866109990395492029noid_a @ g @ addition @ zero ).

% commutative_monoid_axioms
thf(fact_27_additive__abelian__group_Osumset_Ocong,axiom,
    pluenn3038260743871226533mset_a = pluenn3038260743871226533mset_a ).

% additive_abelian_group.sumset.cong
thf(fact_28_additive__abelian__group_Ominusset_Ocong,axiom,
    pluenn2534204936789923946sset_a = pluenn2534204936789923946sset_a ).

% additive_abelian_group.minusset.cong
thf(fact_29_minussetp_Ocases,axiom,
    ! [A2: a > $o,A: a] :
      ( ( pluenn1126946703085653920setp_a @ g @ addition @ zero @ A2 @ A )
     => ~ ! [A3: a] :
            ( ( A
              = ( group_inverse_a @ g @ addition @ zero @ A3 ) )
           => ( ( A2 @ A3 )
             => ~ ( member_a @ A3 @ g ) ) ) ) ).

% minussetp.cases
thf(fact_30_minussetp_OminussetI,axiom,
    ! [A2: a > $o,A: a] :
      ( ( A2 @ A )
     => ( ( member_a @ A @ g )
       => ( pluenn1126946703085653920setp_a @ g @ addition @ zero @ A2 @ ( group_inverse_a @ g @ addition @ zero @ A ) ) ) ) ).

% minussetp.minussetI
thf(fact_31_minussetp_Osimps,axiom,
    ! [A2: a > $o,A: a] :
      ( ( pluenn1126946703085653920setp_a @ g @ addition @ zero @ A2 @ A )
      = ( ? [A4: a] :
            ( ( A
              = ( group_inverse_a @ g @ addition @ zero @ A4 ) )
            & ( A2 @ A4 )
            & ( member_a @ A4 @ g ) ) ) ) ).

% minussetp.simps
thf(fact_32_abelian__group__axioms,axiom,
    group_201663378560352916roup_a @ g @ addition @ zero ).

% abelian_group_axioms
thf(fact_33_sumsetp_Ocases,axiom,
    ! [A2: a > $o,B: a > $o,A: a] :
      ( ( pluenn895083305082786853setp_a @ g @ addition @ A2 @ B @ A )
     => ~ ! [A3: a,B2: a] :
            ( ( A
              = ( addition @ A3 @ B2 ) )
           => ( ( A2 @ A3 )
             => ( ( member_a @ A3 @ g )
               => ( ( B @ B2 )
                 => ~ ( member_a @ B2 @ g ) ) ) ) ) ) ).

% sumsetp.cases
thf(fact_34_sumsetp_Osimps,axiom,
    ! [A2: a > $o,B: a > $o,A: a] :
      ( ( pluenn895083305082786853setp_a @ g @ addition @ A2 @ B @ A )
      = ( ? [A4: a,B3: a] :
            ( ( A
              = ( addition @ A4 @ B3 ) )
            & ( A2 @ A4 )
            & ( member_a @ A4 @ g )
            & ( B @ B3 )
            & ( member_a @ B3 @ g ) ) ) ) ).

% sumsetp.simps
thf(fact_35_sumsetp_OsumsetI,axiom,
    ! [A2: a > $o,A: a,B: a > $o,B4: a] :
      ( ( A2 @ A )
     => ( ( member_a @ A @ g )
       => ( ( B @ B4 )
         => ( ( member_a @ B4 @ g )
           => ( pluenn895083305082786853setp_a @ g @ addition @ A2 @ B @ ( addition @ A @ B4 ) ) ) ) ) ) ).

% sumsetp.sumsetI
thf(fact_36_minusset__iterated__minusset,axiom,
    ! [A2: set_a,K: nat] :
      ( ( pluenn1960970773371692859ated_a @ g @ addition @ zero @ ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ A2 ) @ K )
      = ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ ( pluenn1960970773371692859ated_a @ g @ addition @ zero @ A2 @ K ) ) ) ).

% minusset_iterated_minusset
thf(fact_37_finite__differenceset,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( finite_finite_a @ A2 )
     => ( ( finite_finite_a @ B )
       => ( finite_finite_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ B ) ) ) ) ) ).

% finite_differenceset
thf(fact_38_minusset__subset__carrier,axiom,
    ! [A2: set_a] : ( ord_less_eq_set_a @ ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ A2 ) @ g ) ).

% minusset_subset_carrier
thf(fact_39_assms_I1_J,axiom,
    finite_finite_a @ u ).

% assms(1)
thf(fact_40_assms_I2_J,axiom,
    ord_less_eq_set_a @ u @ g ).

% assms(2)
thf(fact_41_mem__Collect__eq,axiom,
    ! [A: a,P: a > $o] :
      ( ( member_a @ A @ ( collect_a @ P ) )
      = ( P @ A ) ) ).

% mem_Collect_eq
thf(fact_42_mem__Collect__eq,axiom,
    ! [A: nat,P: nat > $o] :
      ( ( member_nat @ A @ ( collect_nat @ P ) )
      = ( P @ A ) ) ).

% mem_Collect_eq
thf(fact_43_Collect__mem__eq,axiom,
    ! [A2: set_a] :
      ( ( collect_a
        @ ^ [X2: a] : ( member_a @ X2 @ A2 ) )
      = A2 ) ).

% Collect_mem_eq
thf(fact_44_Collect__mem__eq,axiom,
    ! [A2: set_nat] :
      ( ( collect_nat
        @ ^ [X2: nat] : ( member_nat @ X2 @ A2 ) )
      = A2 ) ).

% Collect_mem_eq
thf(fact_45_finite__sumset,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( finite_finite_a @ A2 )
     => ( ( finite_finite_a @ B )
       => ( finite_finite_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) ) ) ) ).

% finite_sumset
thf(fact_46_sumset__subset__carrier,axiom,
    ! [A2: set_a,B: set_a] : ( ord_less_eq_set_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) @ g ) ).

% sumset_subset_carrier
thf(fact_47_sumset__mono,axiom,
    ! [A5: set_a,A2: set_a,B5: set_a,B: set_a] :
      ( ( ord_less_eq_set_a @ A5 @ A2 )
     => ( ( ord_less_eq_set_a @ B5 @ B )
       => ( ord_less_eq_set_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ A5 @ B5 ) @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) ) ) ) ).

% sumset_mono
thf(fact_48_finite__minusset,axiom,
    ! [A2: set_a] :
      ( ( finite_finite_a @ A2 )
     => ( finite_finite_a @ ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ A2 ) ) ) ).

% finite_minusset
thf(fact_49_finite__sumset__iterated,axiom,
    ! [A2: set_a,R: nat] :
      ( ( finite_finite_a @ A2 )
     => ( finite_finite_a @ ( pluenn1960970773371692859ated_a @ g @ addition @ zero @ A2 @ R ) ) ) ).

% finite_sumset_iterated
thf(fact_50_sumset__iterated__subset__carrier,axiom,
    ! [A2: set_a,K: nat] : ( ord_less_eq_set_a @ ( pluenn1960970773371692859ated_a @ g @ addition @ zero @ A2 @ K ) @ g ) ).

% sumset_iterated_subset_carrier
thf(fact_51_fin_I1_J,axiom,
    finite_finite_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ u @ ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ v ) ) ).

% fin(1)
thf(fact_52_fin_I2_J,axiom,
    finite_finite_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ u @ ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ w ) ) ).

% fin(2)
thf(fact_53_additive__abelian__group_Ointro,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a] :
      ( ( group_201663378560352916roup_a @ G @ Addition @ Zero )
     => ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero ) ) ).

% additive_abelian_group.intro
thf(fact_54_additive__abelian__group_Oaxioms,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( group_201663378560352916roup_a @ G @ Addition @ Zero ) ) ).

% additive_abelian_group.axioms
thf(fact_55_additive__abelian__group_Osumsetp_Ocases,axiom,
    ! [G: set_nat,Addition: nat > nat > nat,Zero: nat,A2: nat > $o,B: nat > $o,A: nat] :
      ( ( pluenn2073725187428264546up_nat @ G @ Addition @ Zero )
     => ( ( pluenn5670965976768739049tp_nat @ G @ Addition @ A2 @ B @ A )
       => ~ ! [A3: nat,B2: nat] :
              ( ( A
                = ( Addition @ A3 @ B2 ) )
             => ( ( A2 @ A3 )
               => ( ( member_nat @ A3 @ G )
                 => ( ( B @ B2 )
                   => ~ ( member_nat @ B2 @ G ) ) ) ) ) ) ) ).

% additive_abelian_group.sumsetp.cases
thf(fact_56_additive__abelian__group_Osumsetp_Ocases,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: a > $o,B: a > $o,A: a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( pluenn895083305082786853setp_a @ G @ Addition @ A2 @ B @ A )
       => ~ ! [A3: a,B2: a] :
              ( ( A
                = ( Addition @ A3 @ B2 ) )
             => ( ( A2 @ A3 )
               => ( ( member_a @ A3 @ G )
                 => ( ( B @ B2 )
                   => ~ ( member_a @ B2 @ G ) ) ) ) ) ) ) ).

% additive_abelian_group.sumsetp.cases
thf(fact_57_additive__abelian__group_Osumsetp_Osimps,axiom,
    ! [G: set_nat,Addition: nat > nat > nat,Zero: nat,A2: nat > $o,B: nat > $o,A: nat] :
      ( ( pluenn2073725187428264546up_nat @ G @ Addition @ Zero )
     => ( ( pluenn5670965976768739049tp_nat @ G @ Addition @ A2 @ B @ A )
        = ( ? [A4: nat,B3: nat] :
              ( ( A
                = ( Addition @ A4 @ B3 ) )
              & ( A2 @ A4 )
              & ( member_nat @ A4 @ G )
              & ( B @ B3 )
              & ( member_nat @ B3 @ G ) ) ) ) ) ).

% additive_abelian_group.sumsetp.simps
thf(fact_58_additive__abelian__group_Osumsetp_Osimps,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: a > $o,B: a > $o,A: a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( pluenn895083305082786853setp_a @ G @ Addition @ A2 @ B @ A )
        = ( ? [A4: a,B3: a] :
              ( ( A
                = ( Addition @ A4 @ B3 ) )
              & ( A2 @ A4 )
              & ( member_a @ A4 @ G )
              & ( B @ B3 )
              & ( member_a @ B3 @ G ) ) ) ) ) ).

% additive_abelian_group.sumsetp.simps
thf(fact_59_additive__abelian__group_Osumsetp_OsumsetI,axiom,
    ! [G: set_nat,Addition: nat > nat > nat,Zero: nat,A2: nat > $o,A: nat,B: nat > $o,B4: nat] :
      ( ( pluenn2073725187428264546up_nat @ G @ Addition @ Zero )
     => ( ( A2 @ A )
       => ( ( member_nat @ A @ G )
         => ( ( B @ B4 )
           => ( ( member_nat @ B4 @ G )
             => ( pluenn5670965976768739049tp_nat @ G @ Addition @ A2 @ B @ ( Addition @ A @ B4 ) ) ) ) ) ) ) ).

% additive_abelian_group.sumsetp.sumsetI
thf(fact_60_additive__abelian__group_Osumsetp_OsumsetI,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: a > $o,A: a,B: a > $o,B4: a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( A2 @ A )
       => ( ( member_a @ A @ G )
         => ( ( B @ B4 )
           => ( ( member_a @ B4 @ G )
             => ( pluenn895083305082786853setp_a @ G @ Addition @ A2 @ B @ ( Addition @ A @ B4 ) ) ) ) ) ) ) ).

% additive_abelian_group.sumsetp.sumsetI
thf(fact_61_additive__abelian__group_Osumset__iterated_Ocong,axiom,
    pluenn1960970773371692859ated_a = pluenn1960970773371692859ated_a ).

% additive_abelian_group.sumset_iterated.cong
thf(fact_62_additive__abelian__group_Ofinite__sumset__iterated,axiom,
    ! [G: set_nat,Addition: nat > nat > nat,Zero: nat,A2: set_nat,R: nat] :
      ( ( pluenn2073725187428264546up_nat @ G @ Addition @ Zero )
     => ( ( finite_finite_nat @ A2 )
       => ( finite_finite_nat @ ( pluenn7055013279391836755ed_nat @ G @ Addition @ Zero @ A2 @ R ) ) ) ) ).

% additive_abelian_group.finite_sumset_iterated
thf(fact_63_additive__abelian__group_Ofinite__sumset__iterated,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,R: nat] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( finite_finite_a @ A2 )
       => ( finite_finite_a @ ( pluenn1960970773371692859ated_a @ G @ Addition @ Zero @ A2 @ R ) ) ) ) ).

% additive_abelian_group.finite_sumset_iterated
thf(fact_64_additive__abelian__group_Osumset__iterated__subset__carrier,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,K: nat] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ord_less_eq_set_a @ ( pluenn1960970773371692859ated_a @ G @ Addition @ Zero @ A2 @ K ) @ G ) ) ).

% additive_abelian_group.sumset_iterated_subset_carrier
thf(fact_65_additive__abelian__group__def,axiom,
    pluenn1164192988769422572roup_a = group_201663378560352916roup_a ).

% additive_abelian_group_def
thf(fact_66_additive__abelian__group_Ofinite__sumset,axiom,
    ! [G: set_nat,Addition: nat > nat > nat,Zero: nat,A2: set_nat,B: set_nat] :
      ( ( pluenn2073725187428264546up_nat @ G @ Addition @ Zero )
     => ( ( finite_finite_nat @ A2 )
       => ( ( finite_finite_nat @ B )
         => ( finite_finite_nat @ ( pluenn3669378163024332905et_nat @ G @ Addition @ A2 @ B ) ) ) ) ) ).

% additive_abelian_group.finite_sumset
thf(fact_67_additive__abelian__group_Ofinite__sumset,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,B: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( finite_finite_a @ A2 )
       => ( ( finite_finite_a @ B )
         => ( finite_finite_a @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) ) ) ) ) ).

% additive_abelian_group.finite_sumset
thf(fact_68_additive__abelian__group_Ominussetp_Ocong,axiom,
    pluenn1126946703085653920setp_a = pluenn1126946703085653920setp_a ).

% additive_abelian_group.minussetp.cong
thf(fact_69_additive__abelian__group_Osumsetp_Ocong,axiom,
    pluenn895083305082786853setp_a = pluenn895083305082786853setp_a ).

% additive_abelian_group.sumsetp.cong
thf(fact_70_additive__abelian__group_Osumset__subset__carrier,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,B: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ord_less_eq_set_a @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) @ G ) ) ).

% additive_abelian_group.sumset_subset_carrier
thf(fact_71_additive__abelian__group_Osumset__mono,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A5: set_a,A2: set_a,B5: set_a,B: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( ord_less_eq_set_a @ A5 @ A2 )
       => ( ( ord_less_eq_set_a @ B5 @ B )
         => ( ord_less_eq_set_a @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A5 @ B5 ) @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) ) ) ) ) ).

% additive_abelian_group.sumset_mono
thf(fact_72_additive__abelian__group_Ofinite__minusset,axiom,
    ! [G: set_nat,Addition: nat > nat > nat,Zero: nat,A2: set_nat] :
      ( ( pluenn2073725187428264546up_nat @ G @ Addition @ Zero )
     => ( ( finite_finite_nat @ A2 )
       => ( finite_finite_nat @ ( pluenn7323955030898006884et_nat @ G @ Addition @ Zero @ A2 ) ) ) ) ).

% additive_abelian_group.finite_minusset
thf(fact_73_additive__abelian__group_Ofinite__minusset,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( finite_finite_a @ A2 )
       => ( finite_finite_a @ ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ A2 ) ) ) ) ).

% additive_abelian_group.finite_minusset
thf(fact_74_additive__abelian__group_Ominusset__subset__carrier,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ord_less_eq_set_a @ ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ A2 ) @ G ) ) ).

% additive_abelian_group.minusset_subset_carrier
thf(fact_75_additive__abelian__group_Ominusset__iterated__minusset,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,K: nat] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( pluenn1960970773371692859ated_a @ G @ Addition @ Zero @ ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ A2 ) @ K )
        = ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ ( pluenn1960970773371692859ated_a @ G @ Addition @ Zero @ A2 @ K ) ) ) ) ).

% additive_abelian_group.minusset_iterated_minusset
thf(fact_76_additive__abelian__group_Ominussetp_OminussetI,axiom,
    ! [G: set_nat,Addition: nat > nat > nat,Zero: nat,A2: nat > $o,A: nat] :
      ( ( pluenn2073725187428264546up_nat @ G @ Addition @ Zero )
     => ( ( A2 @ A )
       => ( ( member_nat @ A @ G )
         => ( pluenn8372939692575285934tp_nat @ G @ Addition @ Zero @ A2 @ ( group_inverse_nat @ G @ Addition @ Zero @ A ) ) ) ) ) ).

% additive_abelian_group.minussetp.minussetI
thf(fact_77_additive__abelian__group_Ominussetp_OminussetI,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: a > $o,A: a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( A2 @ A )
       => ( ( member_a @ A @ G )
         => ( pluenn1126946703085653920setp_a @ G @ Addition @ Zero @ A2 @ ( group_inverse_a @ G @ Addition @ Zero @ A ) ) ) ) ) ).

% additive_abelian_group.minussetp.minussetI
thf(fact_78_additive__abelian__group_Ominussetp_Osimps,axiom,
    ! [G: set_nat,Addition: nat > nat > nat,Zero: nat,A2: nat > $o,A: nat] :
      ( ( pluenn2073725187428264546up_nat @ G @ Addition @ Zero )
     => ( ( pluenn8372939692575285934tp_nat @ G @ Addition @ Zero @ A2 @ A )
        = ( ? [A4: nat] :
              ( ( A
                = ( group_inverse_nat @ G @ Addition @ Zero @ A4 ) )
              & ( A2 @ A4 )
              & ( member_nat @ A4 @ G ) ) ) ) ) ).

% additive_abelian_group.minussetp.simps
thf(fact_79_additive__abelian__group_Ominussetp_Osimps,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: a > $o,A: a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( pluenn1126946703085653920setp_a @ G @ Addition @ Zero @ A2 @ A )
        = ( ? [A4: a] :
              ( ( A
                = ( group_inverse_a @ G @ Addition @ Zero @ A4 ) )
              & ( A2 @ A4 )
              & ( member_a @ A4 @ G ) ) ) ) ) ).

% additive_abelian_group.minussetp.simps
thf(fact_80_additive__abelian__group_Ominussetp_Ocases,axiom,
    ! [G: set_nat,Addition: nat > nat > nat,Zero: nat,A2: nat > $o,A: nat] :
      ( ( pluenn2073725187428264546up_nat @ G @ Addition @ Zero )
     => ( ( pluenn8372939692575285934tp_nat @ G @ Addition @ Zero @ A2 @ A )
       => ~ ! [A3: nat] :
              ( ( A
                = ( group_inverse_nat @ G @ Addition @ Zero @ A3 ) )
             => ( ( A2 @ A3 )
               => ~ ( member_nat @ A3 @ G ) ) ) ) ) ).

% additive_abelian_group.minussetp.cases
thf(fact_81_additive__abelian__group_Ominussetp_Ocases,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: a > $o,A: a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( pluenn1126946703085653920setp_a @ G @ Addition @ Zero @ A2 @ A )
       => ~ ! [A3: a] :
              ( ( A
                = ( group_inverse_a @ G @ Addition @ Zero @ A3 ) )
             => ( ( A2 @ A3 )
               => ~ ( member_a @ A3 @ G ) ) ) ) ) ).

% additive_abelian_group.minussetp.cases
thf(fact_82_additive__abelian__group_Ofinite__differenceset,axiom,
    ! [G: set_nat,Addition: nat > nat > nat,Zero: nat,A2: set_nat,B: set_nat] :
      ( ( pluenn2073725187428264546up_nat @ G @ Addition @ Zero )
     => ( ( finite_finite_nat @ A2 )
       => ( ( finite_finite_nat @ B )
         => ( finite_finite_nat @ ( pluenn3669378163024332905et_nat @ G @ Addition @ A2 @ ( pluenn7323955030898006884et_nat @ G @ Addition @ Zero @ B ) ) ) ) ) ) ).

% additive_abelian_group.finite_differenceset
thf(fact_83_additive__abelian__group_Ofinite__differenceset,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,B: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( finite_finite_a @ A2 )
       => ( ( finite_finite_a @ B )
         => ( finite_finite_a @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ B ) ) ) ) ) ) ).

% additive_abelian_group.finite_differenceset
thf(fact_84_additive__abelian__group_Osumset__commute,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,B: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B )
        = ( pluenn3038260743871226533mset_a @ G @ Addition @ B @ A2 ) ) ) ).

% additive_abelian_group.sumset_commute
thf(fact_85_additive__abelian__group_Osumset_OsumsetI,axiom,
    ! [G: set_nat,Addition: nat > nat > nat,Zero: nat,A: nat,A2: set_nat,B4: nat,B: set_nat] :
      ( ( pluenn2073725187428264546up_nat @ G @ Addition @ Zero )
     => ( ( member_nat @ A @ A2 )
       => ( ( member_nat @ A @ G )
         => ( ( member_nat @ B4 @ B )
           => ( ( member_nat @ B4 @ G )
             => ( member_nat @ ( Addition @ A @ B4 ) @ ( pluenn3669378163024332905et_nat @ G @ Addition @ A2 @ B ) ) ) ) ) ) ) ).

% additive_abelian_group.sumset.sumsetI
thf(fact_86_additive__abelian__group_Osumset_OsumsetI,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A: a,A2: set_a,B4: a,B: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( member_a @ A @ A2 )
       => ( ( member_a @ A @ G )
         => ( ( member_a @ B4 @ B )
           => ( ( member_a @ B4 @ G )
             => ( member_a @ ( Addition @ A @ B4 ) @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) ) ) ) ) ) ) ).

% additive_abelian_group.sumset.sumsetI
thf(fact_87_additive__abelian__group_Osumset__assoc,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,B: set_a,C: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( pluenn3038260743871226533mset_a @ G @ Addition @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) @ C )
        = ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ ( pluenn3038260743871226533mset_a @ G @ Addition @ B @ C ) ) ) ) ).

% additive_abelian_group.sumset_assoc
thf(fact_88_additive__abelian__group_Osumset_Osimps,axiom,
    ! [G: set_nat,Addition: nat > nat > nat,Zero: nat,A: nat,A2: set_nat,B: set_nat] :
      ( ( pluenn2073725187428264546up_nat @ G @ Addition @ Zero )
     => ( ( member_nat @ A @ ( pluenn3669378163024332905et_nat @ G @ Addition @ A2 @ B ) )
        = ( ? [A4: nat,B3: nat] :
              ( ( A
                = ( Addition @ A4 @ B3 ) )
              & ( member_nat @ A4 @ A2 )
              & ( member_nat @ A4 @ G )
              & ( member_nat @ B3 @ B )
              & ( member_nat @ B3 @ G ) ) ) ) ) ).

% additive_abelian_group.sumset.simps
thf(fact_89_additive__abelian__group_Osumset_Osimps,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A: a,A2: set_a,B: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( member_a @ A @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) )
        = ( ? [A4: a,B3: a] :
              ( ( A
                = ( Addition @ A4 @ B3 ) )
              & ( member_a @ A4 @ A2 )
              & ( member_a @ A4 @ G )
              & ( member_a @ B3 @ B )
              & ( member_a @ B3 @ G ) ) ) ) ) ).

% additive_abelian_group.sumset.simps
thf(fact_90_additive__abelian__group_Osumset_Ocases,axiom,
    ! [G: set_nat,Addition: nat > nat > nat,Zero: nat,A: nat,A2: set_nat,B: set_nat] :
      ( ( pluenn2073725187428264546up_nat @ G @ Addition @ Zero )
     => ( ( member_nat @ A @ ( pluenn3669378163024332905et_nat @ G @ Addition @ A2 @ B ) )
       => ~ ! [A3: nat,B2: nat] :
              ( ( A
                = ( Addition @ A3 @ B2 ) )
             => ( ( member_nat @ A3 @ A2 )
               => ( ( member_nat @ A3 @ G )
                 => ( ( member_nat @ B2 @ B )
                   => ~ ( member_nat @ B2 @ G ) ) ) ) ) ) ) ).

% additive_abelian_group.sumset.cases
thf(fact_91_additive__abelian__group_Osumset_Ocases,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A: a,A2: set_a,B: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( member_a @ A @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) )
       => ~ ! [A3: a,B2: a] :
              ( ( A
                = ( Addition @ A3 @ B2 ) )
             => ( ( member_a @ A3 @ A2 )
               => ( ( member_a @ A3 @ G )
                 => ( ( member_a @ B2 @ B )
                   => ~ ( member_a @ B2 @ G ) ) ) ) ) ) ) ).

% additive_abelian_group.sumset.cases
thf(fact_92_additive__abelian__group_Oinverse__closed,axiom,
    ! [G: set_nat,Addition: nat > nat > nat,Zero: nat,X: nat] :
      ( ( pluenn2073725187428264546up_nat @ G @ Addition @ Zero )
     => ( ( member_nat @ X @ G )
       => ( member_nat @ ( group_inverse_nat @ G @ Addition @ Zero @ X ) @ G ) ) ) ).

% additive_abelian_group.inverse_closed
thf(fact_93_additive__abelian__group_Oinverse__closed,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,X: a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( member_a @ X @ G )
       => ( member_a @ ( group_inverse_a @ G @ Addition @ Zero @ X ) @ G ) ) ) ).

% additive_abelian_group.inverse_closed
thf(fact_94_additive__abelian__group_Odifferenceset__commute,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,B: set_a,A2: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ ( pluenn3038260743871226533mset_a @ G @ Addition @ B @ ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ A2 ) ) )
        = ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ B ) ) ) ) ).

% additive_abelian_group.differenceset_commute
thf(fact_95_additive__abelian__group_Ominusset__distrib__sum,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,B: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) )
        = ( pluenn3038260743871226533mset_a @ G @ Addition @ ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ A2 ) @ ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ B ) ) ) ) ).

% additive_abelian_group.minusset_distrib_sum
thf(fact_96_additive__abelian__group_Odiff__minus__set,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,B: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( pluenn3038260743871226533mset_a @ G @ Addition @ ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ A2 ) @ ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ B ) )
        = ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) ) ) ) ).

% additive_abelian_group.diff_minus_set
thf(fact_97_additive__abelian__group_Ominusset_OminussetI,axiom,
    ! [G: set_nat,Addition: nat > nat > nat,Zero: nat,A: nat,A2: set_nat] :
      ( ( pluenn2073725187428264546up_nat @ G @ Addition @ Zero )
     => ( ( member_nat @ A @ A2 )
       => ( ( member_nat @ A @ G )
         => ( member_nat @ ( group_inverse_nat @ G @ Addition @ Zero @ A ) @ ( pluenn7323955030898006884et_nat @ G @ Addition @ Zero @ A2 ) ) ) ) ) ).

% additive_abelian_group.minusset.minussetI
thf(fact_98_additive__abelian__group_Ominusset_OminussetI,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A: a,A2: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( member_a @ A @ A2 )
       => ( ( member_a @ A @ G )
         => ( member_a @ ( group_inverse_a @ G @ Addition @ Zero @ A ) @ ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ A2 ) ) ) ) ) ).

% additive_abelian_group.minusset.minussetI
thf(fact_99_additive__abelian__group_Ominusset_Osimps,axiom,
    ! [G: set_nat,Addition: nat > nat > nat,Zero: nat,A: nat,A2: set_nat] :
      ( ( pluenn2073725187428264546up_nat @ G @ Addition @ Zero )
     => ( ( member_nat @ A @ ( pluenn7323955030898006884et_nat @ G @ Addition @ Zero @ A2 ) )
        = ( ? [A4: nat] :
              ( ( A
                = ( group_inverse_nat @ G @ Addition @ Zero @ A4 ) )
              & ( member_nat @ A4 @ A2 )
              & ( member_nat @ A4 @ G ) ) ) ) ) ).

% additive_abelian_group.minusset.simps
thf(fact_100_additive__abelian__group_Ominusset_Osimps,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A: a,A2: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( member_a @ A @ ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ A2 ) )
        = ( ? [A4: a] :
              ( ( A
                = ( group_inverse_a @ G @ Addition @ Zero @ A4 ) )
              & ( member_a @ A4 @ A2 )
              & ( member_a @ A4 @ G ) ) ) ) ) ).

% additive_abelian_group.minusset.simps
thf(fact_101_additive__abelian__group_Ominusset_Ocases,axiom,
    ! [G: set_nat,Addition: nat > nat > nat,Zero: nat,A: nat,A2: set_nat] :
      ( ( pluenn2073725187428264546up_nat @ G @ Addition @ Zero )
     => ( ( member_nat @ A @ ( pluenn7323955030898006884et_nat @ G @ Addition @ Zero @ A2 ) )
       => ~ ! [A3: nat] :
              ( ( A
                = ( group_inverse_nat @ G @ Addition @ Zero @ A3 ) )
             => ( ( member_nat @ A3 @ A2 )
               => ~ ( member_nat @ A3 @ G ) ) ) ) ) ).

% additive_abelian_group.minusset.cases
thf(fact_102_additive__abelian__group_Ominusset_Ocases,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A: a,A2: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( member_a @ A @ ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ A2 ) )
       => ~ ! [A3: a] :
              ( ( A
                = ( group_inverse_a @ G @ Addition @ Zero @ A3 ) )
             => ( ( member_a @ A3 @ A2 )
               => ~ ( member_a @ A3 @ G ) ) ) ) ) ).

% additive_abelian_group.minusset.cases
thf(fact_103_card__sumset__iterated__minusset,axiom,
    ! [A2: set_a,K: nat] :
      ( ( finite_card_a @ ( pluenn1960970773371692859ated_a @ g @ addition @ zero @ ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ A2 ) @ K ) )
      = ( finite_card_a @ ( pluenn1960970773371692859ated_a @ g @ addition @ zero @ A2 @ K ) ) ) ).

% card_sumset_iterated_minusset
thf(fact_104_card__minusset_H,axiom,
    ! [A2: set_a] :
      ( ( ord_less_eq_set_a @ A2 @ g )
     => ( ( finite_card_a @ ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ A2 ) )
        = ( finite_card_a @ A2 ) ) ) ).

% card_minusset'
thf(fact_105_card__differenceset__commute,axiom,
    ! [B: set_a,A2: set_a] :
      ( ( finite_card_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ B @ ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ A2 ) ) )
      = ( finite_card_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ B ) ) ) ) ).

% card_differenceset_commute
thf(fact_106_group__axioms,axiom,
    group_group_a @ g @ addition @ zero ).

% group_axioms
thf(fact_107_sumset__subset__insert_I1_J,axiom,
    ! [A2: set_a,B: set_a,X: a] : ( ord_less_eq_set_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ ( insert_a @ X @ B ) ) ) ).

% sumset_subset_insert(1)
thf(fact_108_sumset__subset__insert_I2_J,axiom,
    ! [A2: set_a,B: set_a,X: a] : ( ord_less_eq_set_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) @ ( pluenn3038260743871226533mset_a @ g @ addition @ ( insert_a @ X @ A2 ) @ B ) ) ).

% sumset_subset_insert(2)
thf(fact_109_finite__sumset_H,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( finite_finite_a @ ( inf_inf_set_a @ A2 @ g ) )
     => ( ( finite_finite_a @ ( inf_inf_set_a @ B @ g ) )
       => ( finite_finite_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) ) ) ) ).

% finite_sumset'
thf(fact_110_invertible__right__inverse2,axiom,
    ! [U: a,V3: a] :
      ( ( group_invertible_a @ g @ addition @ zero @ U )
     => ( ( member_a @ U @ g )
       => ( ( member_a @ V3 @ g )
         => ( ( addition @ U @ ( addition @ ( group_inverse_a @ g @ addition @ zero @ U ) @ V3 ) )
            = V3 ) ) ) ) ).

% invertible_right_inverse2
thf(fact_111_invertible__left__inverse2,axiom,
    ! [U: a,V3: a] :
      ( ( group_invertible_a @ g @ addition @ zero @ U )
     => ( ( member_a @ U @ g )
       => ( ( member_a @ V3 @ g )
         => ( ( addition @ ( group_inverse_a @ g @ addition @ zero @ U ) @ ( addition @ U @ V3 ) )
            = V3 ) ) ) ) ).

% invertible_left_inverse2
thf(fact_112_inverse__composition__commute,axiom,
    ! [X: a,Y: a] :
      ( ( group_invertible_a @ g @ addition @ zero @ X )
     => ( ( group_invertible_a @ g @ addition @ zero @ Y )
       => ( ( member_a @ X @ g )
         => ( ( member_a @ Y @ g )
           => ( ( group_inverse_a @ g @ addition @ zero @ ( addition @ X @ Y ) )
              = ( addition @ ( group_inverse_a @ g @ addition @ zero @ Y ) @ ( group_inverse_a @ g @ addition @ zero @ X ) ) ) ) ) ) ) ).

% inverse_composition_commute
thf(fact_113_sumset__subset__Un_I1_J,axiom,
    ! [A2: set_a,B: set_a,C: set_a] : ( ord_less_eq_set_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ ( sup_sup_set_a @ B @ C ) ) ) ).

% sumset_subset_Un(1)
thf(fact_114_sumset__subset__Un1,axiom,
    ! [A2: set_a,A5: set_a,B: set_a] :
      ( ( pluenn3038260743871226533mset_a @ g @ addition @ ( sup_sup_set_a @ A2 @ A5 ) @ B )
      = ( sup_sup_set_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) @ ( pluenn3038260743871226533mset_a @ g @ addition @ A5 @ B ) ) ) ).

% sumset_subset_Un1
thf(fact_115_sumset__subset__Un2,axiom,
    ! [A2: set_a,B: set_a,B5: set_a] :
      ( ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ ( sup_sup_set_a @ B @ B5 ) )
      = ( sup_sup_set_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B5 ) ) ) ).

% sumset_subset_Un2
thf(fact_116_invertibleE,axiom,
    ! [U: a] :
      ( ( group_invertible_a @ g @ addition @ zero @ U )
     => ( ! [V: a] :
            ( ( ( ( addition @ U @ V )
                = zero )
              & ( ( addition @ V @ U )
                = zero ) )
           => ~ ( member_a @ V @ g ) )
       => ~ ( member_a @ U @ g ) ) ) ).

% invertibleE
thf(fact_117_invertible__def,axiom,
    ! [U: a] :
      ( ( member_a @ U @ g )
     => ( ( group_invertible_a @ g @ addition @ zero @ U )
        = ( ? [X2: a] :
              ( ( member_a @ X2 @ g )
              & ( ( addition @ U @ X2 )
                = zero )
              & ( ( addition @ X2 @ U )
                = zero ) ) ) ) ) ).

% invertible_def
thf(fact_118_unit__invertible,axiom,
    group_invertible_a @ g @ addition @ zero @ zero ).

% unit_invertible
thf(fact_119_sumset__subset__Un_I2_J,axiom,
    ! [A2: set_a,B: set_a,C: set_a] : ( ord_less_eq_set_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) @ ( pluenn3038260743871226533mset_a @ g @ addition @ ( sup_sup_set_a @ A2 @ C ) @ B ) ) ).

% sumset_subset_Un(2)
thf(fact_120_sumset__Int__carrier__eq_I2_J,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( pluenn3038260743871226533mset_a @ g @ addition @ ( inf_inf_set_a @ A2 @ g ) @ B )
      = ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) ) ).

% sumset_Int_carrier_eq(2)
thf(fact_121_sumset__Int__carrier__eq_I1_J,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ ( inf_inf_set_a @ B @ g ) )
      = ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) ) ).

% sumset_Int_carrier_eq(1)
thf(fact_122_sumset__Int__carrier,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( inf_inf_set_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) @ g )
      = ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) ) ).

% sumset_Int_carrier
thf(fact_123_composition__invertible,axiom,
    ! [X: a,Y: a] :
      ( ( group_invertible_a @ g @ addition @ zero @ X )
     => ( ( group_invertible_a @ g @ addition @ zero @ Y )
       => ( ( member_a @ X @ g )
         => ( ( member_a @ Y @ g )
           => ( group_invertible_a @ g @ addition @ zero @ ( addition @ X @ Y ) ) ) ) ) ) ).

% composition_invertible
thf(fact_124_invertible,axiom,
    ! [U: a] :
      ( ( member_a @ U @ g )
     => ( group_invertible_a @ g @ addition @ zero @ U ) ) ).

% invertible
thf(fact_125_invertibleI,axiom,
    ! [U: a,V3: a] :
      ( ( ( addition @ U @ V3 )
        = zero )
     => ( ( ( addition @ V3 @ U )
          = zero )
       => ( ( member_a @ U @ g )
         => ( ( member_a @ V3 @ g )
           => ( group_invertible_a @ g @ addition @ zero @ U ) ) ) ) ) ).

% invertibleI
thf(fact_126_invertible__left__cancel,axiom,
    ! [X: a,Y: a,Z: a] :
      ( ( group_invertible_a @ g @ addition @ zero @ X )
     => ( ( member_a @ X @ g )
       => ( ( member_a @ Y @ g )
         => ( ( member_a @ Z @ g )
           => ( ( ( addition @ X @ Y )
                = ( addition @ X @ Z ) )
              = ( Y = Z ) ) ) ) ) ) ).

% invertible_left_cancel
thf(fact_127_invertible__right__cancel,axiom,
    ! [X: a,Y: a,Z: a] :
      ( ( group_invertible_a @ g @ addition @ zero @ X )
     => ( ( member_a @ X @ g )
       => ( ( member_a @ Y @ g )
         => ( ( member_a @ Z @ g )
           => ( ( ( addition @ Y @ X )
                = ( addition @ Z @ X ) )
              = ( Y = Z ) ) ) ) ) ) ).

% invertible_right_cancel
thf(fact_128_minus__minusset,axiom,
    ! [A2: set_a] :
      ( ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ A2 ) )
      = ( inf_inf_set_a @ A2 @ g ) ) ).

% minus_minusset
thf(fact_129_invertible__inverse__closed,axiom,
    ! [U: a] :
      ( ( group_invertible_a @ g @ addition @ zero @ U )
     => ( ( member_a @ U @ g )
       => ( member_a @ ( group_inverse_a @ g @ addition @ zero @ U ) @ g ) ) ) ).

% invertible_inverse_closed
thf(fact_130_invertible__inverse__inverse,axiom,
    ! [U: a] :
      ( ( group_invertible_a @ g @ addition @ zero @ U )
     => ( ( member_a @ U @ g )
       => ( ( group_inverse_a @ g @ addition @ zero @ ( group_inverse_a @ g @ addition @ zero @ U ) )
          = U ) ) ) ).

% invertible_inverse_inverse
thf(fact_131_invertible__inverse__invertible,axiom,
    ! [U: a] :
      ( ( group_invertible_a @ g @ addition @ zero @ U )
     => ( ( member_a @ U @ g )
       => ( group_invertible_a @ g @ addition @ zero @ ( group_inverse_a @ g @ addition @ zero @ U ) ) ) ) ).

% invertible_inverse_invertible
thf(fact_132_invertible__left__inverse,axiom,
    ! [U: a] :
      ( ( group_invertible_a @ g @ addition @ zero @ U )
     => ( ( member_a @ U @ g )
       => ( ( addition @ ( group_inverse_a @ g @ addition @ zero @ U ) @ U )
          = zero ) ) ) ).

% invertible_left_inverse
thf(fact_133_invertible__right__inverse,axiom,
    ! [U: a] :
      ( ( group_invertible_a @ g @ addition @ zero @ U )
     => ( ( member_a @ U @ g )
       => ( ( addition @ U @ ( group_inverse_a @ g @ addition @ zero @ U ) )
          = zero ) ) ) ).

% invertible_right_inverse
thf(fact_134_card__minusset,axiom,
    ! [A2: set_a] :
      ( ( finite_card_a @ ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ A2 ) )
      = ( finite_card_a @ ( inf_inf_set_a @ A2 @ g ) ) ) ).

% card_minusset
thf(fact_135_additive__abelian__group_Ocard__minusset,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( finite_card_a @ ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ A2 ) )
        = ( finite_card_a @ ( inf_inf_set_a @ A2 @ G ) ) ) ) ).

% additive_abelian_group.card_minusset
thf(fact_136_additive__abelian__group_Osumset__subset__Un1,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,A5: set_a,B: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( pluenn3038260743871226533mset_a @ G @ Addition @ ( sup_sup_set_a @ A2 @ A5 ) @ B )
        = ( sup_sup_set_a @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A5 @ B ) ) ) ) ).

% additive_abelian_group.sumset_subset_Un1
thf(fact_137_additive__abelian__group_Osumset__subset__Un2,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,B: set_a,B5: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ ( sup_sup_set_a @ B @ B5 ) )
        = ( sup_sup_set_a @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B5 ) ) ) ) ).

% additive_abelian_group.sumset_subset_Un2
thf(fact_138_additive__abelian__group_Osumset__Int__carrier__eq_I2_J,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,B: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( pluenn3038260743871226533mset_a @ G @ Addition @ ( inf_inf_set_a @ A2 @ G ) @ B )
        = ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) ) ) ).

% additive_abelian_group.sumset_Int_carrier_eq(2)
thf(fact_139_additive__abelian__group_Osumset__Int__carrier__eq_I1_J,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,B: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ ( inf_inf_set_a @ B @ G ) )
        = ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) ) ) ).

% additive_abelian_group.sumset_Int_carrier_eq(1)
thf(fact_140_additive__abelian__group_Osumset__Int__carrier,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,B: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( inf_inf_set_a @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) @ G )
        = ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) ) ) ).

% additive_abelian_group.sumset_Int_carrier
thf(fact_141_additive__abelian__group_Ominus__minusset,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ A2 ) )
        = ( inf_inf_set_a @ A2 @ G ) ) ) ).

% additive_abelian_group.minus_minusset
thf(fact_142_additive__abelian__group_Ocard__minusset_H,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( ord_less_eq_set_a @ A2 @ G )
       => ( ( finite_card_a @ ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ A2 ) )
          = ( finite_card_a @ A2 ) ) ) ) ).

% additive_abelian_group.card_minusset'
thf(fact_143_additive__abelian__group_Osumset__subset__Un_I1_J,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,B: set_a,C: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ord_less_eq_set_a @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ ( sup_sup_set_a @ B @ C ) ) ) ) ).

% additive_abelian_group.sumset_subset_Un(1)
thf(fact_144_additive__abelian__group_Osumset__subset__Un_I2_J,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,B: set_a,C: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ord_less_eq_set_a @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) @ ( pluenn3038260743871226533mset_a @ G @ Addition @ ( sup_sup_set_a @ A2 @ C ) @ B ) ) ) ).

% additive_abelian_group.sumset_subset_Un(2)
thf(fact_145_additive__abelian__group_Ofinite__sumset_H,axiom,
    ! [G: set_nat,Addition: nat > nat > nat,Zero: nat,A2: set_nat,B: set_nat] :
      ( ( pluenn2073725187428264546up_nat @ G @ Addition @ Zero )
     => ( ( finite_finite_nat @ ( inf_inf_set_nat @ A2 @ G ) )
       => ( ( finite_finite_nat @ ( inf_inf_set_nat @ B @ G ) )
         => ( finite_finite_nat @ ( pluenn3669378163024332905et_nat @ G @ Addition @ A2 @ B ) ) ) ) ) ).

% additive_abelian_group.finite_sumset'
thf(fact_146_additive__abelian__group_Ofinite__sumset_H,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,B: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( finite_finite_a @ ( inf_inf_set_a @ A2 @ G ) )
       => ( ( finite_finite_a @ ( inf_inf_set_a @ B @ G ) )
         => ( finite_finite_a @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) ) ) ) ) ).

% additive_abelian_group.finite_sumset'
thf(fact_147_additive__abelian__group_Osumset__subset__insert_I1_J,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,B: set_a,X: a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ord_less_eq_set_a @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ ( insert_a @ X @ B ) ) ) ) ).

% additive_abelian_group.sumset_subset_insert(1)
thf(fact_148_additive__abelian__group_Osumset__subset__insert_I2_J,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,B: set_a,X: a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ord_less_eq_set_a @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) @ ( pluenn3038260743871226533mset_a @ G @ Addition @ ( insert_a @ X @ A2 ) @ B ) ) ) ).

% additive_abelian_group.sumset_subset_insert(2)
thf(fact_149_additive__abelian__group_Ocard__differenceset__commute,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,B: set_a,A2: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( finite_card_a @ ( pluenn3038260743871226533mset_a @ G @ Addition @ B @ ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ A2 ) ) )
        = ( finite_card_a @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ B ) ) ) ) ) ).

% additive_abelian_group.card_differenceset_commute
thf(fact_150_additive__abelian__group_Ocard__sumset__iterated__minusset,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,K: nat] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( finite_card_a @ ( pluenn1960970773371692859ated_a @ G @ Addition @ Zero @ ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ A2 ) @ K ) )
        = ( finite_card_a @ ( pluenn1960970773371692859ated_a @ G @ Addition @ Zero @ A2 @ K ) ) ) ) ).

% additive_abelian_group.card_sumset_iterated_minusset
thf(fact_151_mem__UnitsD,axiom,
    ! [U: a] :
      ( ( member_a @ U @ ( group_Units_a @ g @ addition @ zero ) )
     => ( ( group_invertible_a @ g @ addition @ zero @ U )
        & ( member_a @ U @ g ) ) ) ).

% mem_UnitsD
thf(fact_152_mem__UnitsI,axiom,
    ! [U: a] :
      ( ( group_invertible_a @ g @ addition @ zero @ U )
     => ( ( member_a @ U @ g )
       => ( member_a @ U @ ( group_Units_a @ g @ addition @ zero ) ) ) ) ).

% mem_UnitsI
thf(fact_153_subgroupI,axiom,
    ! [G: set_a] :
      ( ( ord_less_eq_set_a @ G @ g )
     => ( ( member_a @ zero @ G )
       => ( ! [G2: a,H: a] :
              ( ( member_a @ G2 @ G )
             => ( ( member_a @ H @ G )
               => ( member_a @ ( addition @ G2 @ H ) @ G ) ) )
         => ( ! [G2: a] :
                ( ( member_a @ G2 @ G )
               => ( group_invertible_a @ g @ addition @ zero @ G2 ) )
           => ( ! [G2: a] :
                  ( ( member_a @ G2 @ G )
                 => ( member_a @ ( group_inverse_a @ g @ addition @ zero @ G2 ) @ G ) )
             => ( group_subgroup_a @ G @ g @ addition @ zero ) ) ) ) ) ) ).

% subgroupI
thf(fact_154_card__le__sumset,axiom,
    ! [A2: set_a,A: a,B: set_a] :
      ( ( finite_finite_a @ A2 )
     => ( ( member_a @ A @ A2 )
       => ( ( member_a @ A @ g )
         => ( ( finite_finite_a @ B )
           => ( ( ord_less_eq_set_a @ B @ g )
             => ( ord_less_eq_nat @ ( finite_card_a @ B ) @ ( finite_card_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) ) ) ) ) ) ) ) ).

% card_le_sumset
thf(fact_155_card__sumset__0__iff,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( ord_less_eq_set_a @ A2 @ g )
     => ( ( ord_less_eq_set_a @ B @ g )
       => ( ( ( finite_card_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) )
            = zero_zero_nat )
          = ( ( ( finite_card_a @ A2 )
              = zero_zero_nat )
            | ( ( finite_card_a @ B )
              = zero_zero_nat ) ) ) ) ) ).

% card_sumset_0_iff
thf(fact_156_card__sumset__0__iff_H,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( ( finite_card_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) )
        = zero_zero_nat )
      = ( ( ( finite_card_a @ ( inf_inf_set_a @ A2 @ g ) )
          = zero_zero_nat )
        | ( ( finite_card_a @ ( inf_inf_set_a @ B @ g ) )
          = zero_zero_nat ) ) ) ).

% card_sumset_0_iff'
thf(fact_157_infinite__sumset__aux,axiom,
    ! [A2: set_a,B: set_a] :
      ( ~ ( finite_finite_a @ ( inf_inf_set_a @ A2 @ g ) )
     => ( ( ~ ( finite_finite_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) ) )
        = ( ( inf_inf_set_a @ B @ g )
         != bot_bot_set_a ) ) ) ).

% infinite_sumset_aux
thf(fact_158_infinite__sumset__iff,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( ~ ( finite_finite_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) ) )
      = ( ( ~ ( finite_finite_a @ ( inf_inf_set_a @ A2 @ g ) )
          & ( ( inf_inf_set_a @ B @ g )
           != bot_bot_set_a ) )
        | ( ( ( inf_inf_set_a @ A2 @ g )
           != bot_bot_set_a )
          & ~ ( finite_finite_a @ ( inf_inf_set_a @ B @ g ) ) ) ) ) ).

% infinite_sumset_iff
thf(fact_159_minusset__eq,axiom,
    ! [A2: set_a] :
      ( ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ A2 )
      = ( image_a_a @ ( group_inverse_a @ g @ addition @ zero ) @ ( inf_inf_set_a @ A2 @ g ) ) ) ).

% minusset_eq
thf(fact_160_Un__Int__eq_I1_J,axiom,
    ! [S: set_a,T: set_a] :
      ( ( inf_inf_set_a @ ( sup_sup_set_a @ S @ T ) @ S )
      = S ) ).

% Un_Int_eq(1)
thf(fact_161_image__eqI,axiom,
    ! [B4: a,F: a > a,X: a,A2: set_a] :
      ( ( B4
        = ( F @ X ) )
     => ( ( member_a @ X @ A2 )
       => ( member_a @ B4 @ ( image_a_a @ F @ A2 ) ) ) ) ).

% image_eqI
thf(fact_162_image__eqI,axiom,
    ! [B4: nat,F: a > nat,X: a,A2: set_a] :
      ( ( B4
        = ( F @ X ) )
     => ( ( member_a @ X @ A2 )
       => ( member_nat @ B4 @ ( image_a_nat @ F @ A2 ) ) ) ) ).

% image_eqI
thf(fact_163_image__eqI,axiom,
    ! [B4: a,F: nat > a,X: nat,A2: set_nat] :
      ( ( B4
        = ( F @ X ) )
     => ( ( member_nat @ X @ A2 )
       => ( member_a @ B4 @ ( image_nat_a @ F @ A2 ) ) ) ) ).

% image_eqI
thf(fact_164_image__eqI,axiom,
    ! [B4: nat,F: nat > nat,X: nat,A2: set_nat] :
      ( ( B4
        = ( F @ X ) )
     => ( ( member_nat @ X @ A2 )
       => ( member_nat @ B4 @ ( image_nat_nat @ F @ A2 ) ) ) ) ).

% image_eqI
thf(fact_165_empty__iff,axiom,
    ! [C2: nat] :
      ~ ( member_nat @ C2 @ bot_bot_set_nat ) ).

% empty_iff
thf(fact_166_empty__iff,axiom,
    ! [C2: a] :
      ~ ( member_a @ C2 @ bot_bot_set_a ) ).

% empty_iff
thf(fact_167_all__not__in__conv,axiom,
    ! [A2: set_nat] :
      ( ( ! [X2: nat] :
            ~ ( member_nat @ X2 @ A2 ) )
      = ( A2 = bot_bot_set_nat ) ) ).

% all_not_in_conv
thf(fact_168_all__not__in__conv,axiom,
    ! [A2: set_a] :
      ( ( ! [X2: a] :
            ~ ( member_a @ X2 @ A2 ) )
      = ( A2 = bot_bot_set_a ) ) ).

% all_not_in_conv
thf(fact_169_Collect__empty__eq,axiom,
    ! [P: a > $o] :
      ( ( ( collect_a @ P )
        = bot_bot_set_a )
      = ( ! [X2: a] :
            ~ ( P @ X2 ) ) ) ).

% Collect_empty_eq
thf(fact_170_empty__Collect__eq,axiom,
    ! [P: a > $o] :
      ( ( bot_bot_set_a
        = ( collect_a @ P ) )
      = ( ! [X2: a] :
            ~ ( P @ X2 ) ) ) ).

% empty_Collect_eq
thf(fact_171_subsetI,axiom,
    ! [A2: set_nat,B: set_nat] :
      ( ! [X3: nat] :
          ( ( member_nat @ X3 @ A2 )
         => ( member_nat @ X3 @ B ) )
     => ( ord_less_eq_set_nat @ A2 @ B ) ) ).

% subsetI
thf(fact_172_subsetI,axiom,
    ! [A2: set_a,B: set_a] :
      ( ! [X3: a] :
          ( ( member_a @ X3 @ A2 )
         => ( member_a @ X3 @ B ) )
     => ( ord_less_eq_set_a @ A2 @ B ) ) ).

% subsetI
thf(fact_173_subset__antisym,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( ord_less_eq_set_a @ A2 @ B )
     => ( ( ord_less_eq_set_a @ B @ A2 )
       => ( A2 = B ) ) ) ).

% subset_antisym
thf(fact_174_insertCI,axiom,
    ! [A: a,B: set_a,B4: a] :
      ( ( ~ ( member_a @ A @ B )
       => ( A = B4 ) )
     => ( member_a @ A @ ( insert_a @ B4 @ B ) ) ) ).

% insertCI
thf(fact_175_insertCI,axiom,
    ! [A: nat,B: set_nat,B4: nat] :
      ( ( ~ ( member_nat @ A @ B )
       => ( A = B4 ) )
     => ( member_nat @ A @ ( insert_nat @ B4 @ B ) ) ) ).

% insertCI
thf(fact_176_insert__iff,axiom,
    ! [A: a,B4: a,A2: set_a] :
      ( ( member_a @ A @ ( insert_a @ B4 @ A2 ) )
      = ( ( A = B4 )
        | ( member_a @ A @ A2 ) ) ) ).

% insert_iff
thf(fact_177_insert__iff,axiom,
    ! [A: nat,B4: nat,A2: set_nat] :
      ( ( member_nat @ A @ ( insert_nat @ B4 @ A2 ) )
      = ( ( A = B4 )
        | ( member_nat @ A @ A2 ) ) ) ).

% insert_iff
thf(fact_178_insert__absorb2,axiom,
    ! [X: a,A2: set_a] :
      ( ( insert_a @ X @ ( insert_a @ X @ A2 ) )
      = ( insert_a @ X @ A2 ) ) ).

% insert_absorb2
thf(fact_179_IntI,axiom,
    ! [C2: nat,A2: set_nat,B: set_nat] :
      ( ( member_nat @ C2 @ A2 )
     => ( ( member_nat @ C2 @ B )
       => ( member_nat @ C2 @ ( inf_inf_set_nat @ A2 @ B ) ) ) ) ).

% IntI
thf(fact_180_IntI,axiom,
    ! [C2: a,A2: set_a,B: set_a] :
      ( ( member_a @ C2 @ A2 )
     => ( ( member_a @ C2 @ B )
       => ( member_a @ C2 @ ( inf_inf_set_a @ A2 @ B ) ) ) ) ).

% IntI
thf(fact_181_Int__iff,axiom,
    ! [C2: nat,A2: set_nat,B: set_nat] :
      ( ( member_nat @ C2 @ ( inf_inf_set_nat @ A2 @ B ) )
      = ( ( member_nat @ C2 @ A2 )
        & ( member_nat @ C2 @ B ) ) ) ).

% Int_iff
thf(fact_182_Int__iff,axiom,
    ! [C2: a,A2: set_a,B: set_a] :
      ( ( member_a @ C2 @ ( inf_inf_set_a @ A2 @ B ) )
      = ( ( member_a @ C2 @ A2 )
        & ( member_a @ C2 @ B ) ) ) ).

% Int_iff
thf(fact_183_UnCI,axiom,
    ! [C2: nat,B: set_nat,A2: set_nat] :
      ( ( ~ ( member_nat @ C2 @ B )
       => ( member_nat @ C2 @ A2 ) )
     => ( member_nat @ C2 @ ( sup_sup_set_nat @ A2 @ B ) ) ) ).

% UnCI
thf(fact_184_UnCI,axiom,
    ! [C2: a,B: set_a,A2: set_a] :
      ( ( ~ ( member_a @ C2 @ B )
       => ( member_a @ C2 @ A2 ) )
     => ( member_a @ C2 @ ( sup_sup_set_a @ A2 @ B ) ) ) ).

% UnCI
thf(fact_185_Un__iff,axiom,
    ! [C2: nat,A2: set_nat,B: set_nat] :
      ( ( member_nat @ C2 @ ( sup_sup_set_nat @ A2 @ B ) )
      = ( ( member_nat @ C2 @ A2 )
        | ( member_nat @ C2 @ B ) ) ) ).

% Un_iff
thf(fact_186_Un__iff,axiom,
    ! [C2: a,A2: set_a,B: set_a] :
      ( ( member_a @ C2 @ ( sup_sup_set_a @ A2 @ B ) )
      = ( ( member_a @ C2 @ A2 )
        | ( member_a @ C2 @ B ) ) ) ).

% Un_iff
thf(fact_187_sumset__empty_H_I1_J,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( ( inf_inf_set_a @ A2 @ g )
        = bot_bot_set_a )
     => ( ( pluenn3038260743871226533mset_a @ g @ addition @ B @ A2 )
        = bot_bot_set_a ) ) ).

% sumset_empty'(1)
thf(fact_188_sumset__empty_H_I2_J,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( ( inf_inf_set_a @ A2 @ g )
        = bot_bot_set_a )
     => ( ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B )
        = bot_bot_set_a ) ) ).

% sumset_empty'(2)
thf(fact_189_image__empty,axiom,
    ! [F: nat > nat] :
      ( ( image_nat_nat @ F @ bot_bot_set_nat )
      = bot_bot_set_nat ) ).

% image_empty
thf(fact_190_image__empty,axiom,
    ! [F: a > a] :
      ( ( image_a_a @ F @ bot_bot_set_a )
      = bot_bot_set_a ) ).

% image_empty
thf(fact_191_empty__is__image,axiom,
    ! [F: nat > nat,A2: set_nat] :
      ( ( bot_bot_set_nat
        = ( image_nat_nat @ F @ A2 ) )
      = ( A2 = bot_bot_set_nat ) ) ).

% empty_is_image
thf(fact_192_empty__is__image,axiom,
    ! [F: a > a,A2: set_a] :
      ( ( bot_bot_set_a
        = ( image_a_a @ F @ A2 ) )
      = ( A2 = bot_bot_set_a ) ) ).

% empty_is_image
thf(fact_193_image__is__empty,axiom,
    ! [F: nat > nat,A2: set_nat] :
      ( ( ( image_nat_nat @ F @ A2 )
        = bot_bot_set_nat )
      = ( A2 = bot_bot_set_nat ) ) ).

% image_is_empty
thf(fact_194_image__is__empty,axiom,
    ! [F: a > a,A2: set_a] :
      ( ( ( image_a_a @ F @ A2 )
        = bot_bot_set_a )
      = ( A2 = bot_bot_set_a ) ) ).

% image_is_empty
thf(fact_195_subset__empty,axiom,
    ! [A2: set_a] :
      ( ( ord_less_eq_set_a @ A2 @ bot_bot_set_a )
      = ( A2 = bot_bot_set_a ) ) ).

% subset_empty
thf(fact_196_empty__subsetI,axiom,
    ! [A2: set_a] : ( ord_less_eq_set_a @ bot_bot_set_a @ A2 ) ).

% empty_subsetI
thf(fact_197_image__insert,axiom,
    ! [F: nat > nat,A: nat,B: set_nat] :
      ( ( image_nat_nat @ F @ ( insert_nat @ A @ B ) )
      = ( insert_nat @ ( F @ A ) @ ( image_nat_nat @ F @ B ) ) ) ).

% image_insert
thf(fact_198_image__insert,axiom,
    ! [F: a > a,A: a,B: set_a] :
      ( ( image_a_a @ F @ ( insert_a @ A @ B ) )
      = ( insert_a @ ( F @ A ) @ ( image_a_a @ F @ B ) ) ) ).

% image_insert
thf(fact_199_insert__image,axiom,
    ! [X: a,A2: set_a,F: a > a] :
      ( ( member_a @ X @ A2 )
     => ( ( insert_a @ ( F @ X ) @ ( image_a_a @ F @ A2 ) )
        = ( image_a_a @ F @ A2 ) ) ) ).

% insert_image
thf(fact_200_insert__image,axiom,
    ! [X: nat,A2: set_nat,F: nat > nat] :
      ( ( member_nat @ X @ A2 )
     => ( ( insert_nat @ ( F @ X ) @ ( image_nat_nat @ F @ A2 ) )
        = ( image_nat_nat @ F @ A2 ) ) ) ).

% insert_image
thf(fact_201_insert__image,axiom,
    ! [X: nat,A2: set_nat,F: nat > a] :
      ( ( member_nat @ X @ A2 )
     => ( ( insert_a @ ( F @ X ) @ ( image_nat_a @ F @ A2 ) )
        = ( image_nat_a @ F @ A2 ) ) ) ).

% insert_image
thf(fact_202_singletonI,axiom,
    ! [A: nat] : ( member_nat @ A @ ( insert_nat @ A @ bot_bot_set_nat ) ) ).

% singletonI
thf(fact_203_singletonI,axiom,
    ! [A: a] : ( member_a @ A @ ( insert_a @ A @ bot_bot_set_a ) ) ).

% singletonI
thf(fact_204_insert__subset,axiom,
    ! [X: nat,A2: set_nat,B: set_nat] :
      ( ( ord_less_eq_set_nat @ ( insert_nat @ X @ A2 ) @ B )
      = ( ( member_nat @ X @ B )
        & ( ord_less_eq_set_nat @ A2 @ B ) ) ) ).

% insert_subset
thf(fact_205_insert__subset,axiom,
    ! [X: a,A2: set_a,B: set_a] :
      ( ( ord_less_eq_set_a @ ( insert_a @ X @ A2 ) @ B )
      = ( ( member_a @ X @ B )
        & ( ord_less_eq_set_a @ A2 @ B ) ) ) ).

% insert_subset
thf(fact_206_Int__subset__iff,axiom,
    ! [C: set_a,A2: set_a,B: set_a] :
      ( ( ord_less_eq_set_a @ C @ ( inf_inf_set_a @ A2 @ B ) )
      = ( ( ord_less_eq_set_a @ C @ A2 )
        & ( ord_less_eq_set_a @ C @ B ) ) ) ).

% Int_subset_iff
thf(fact_207_Un__empty,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( ( sup_sup_set_a @ A2 @ B )
        = bot_bot_set_a )
      = ( ( A2 = bot_bot_set_a )
        & ( B = bot_bot_set_a ) ) ) ).

% Un_empty
thf(fact_208_Int__insert__left__if0,axiom,
    ! [A: nat,C: set_nat,B: set_nat] :
      ( ~ ( member_nat @ A @ C )
     => ( ( inf_inf_set_nat @ ( insert_nat @ A @ B ) @ C )
        = ( inf_inf_set_nat @ B @ C ) ) ) ).

% Int_insert_left_if0
thf(fact_209_Int__insert__left__if0,axiom,
    ! [A: a,C: set_a,B: set_a] :
      ( ~ ( member_a @ A @ C )
     => ( ( inf_inf_set_a @ ( insert_a @ A @ B ) @ C )
        = ( inf_inf_set_a @ B @ C ) ) ) ).

% Int_insert_left_if0
thf(fact_210_Int__insert__left__if1,axiom,
    ! [A: nat,C: set_nat,B: set_nat] :
      ( ( member_nat @ A @ C )
     => ( ( inf_inf_set_nat @ ( insert_nat @ A @ B ) @ C )
        = ( insert_nat @ A @ ( inf_inf_set_nat @ B @ C ) ) ) ) ).

% Int_insert_left_if1
thf(fact_211_Int__insert__left__if1,axiom,
    ! [A: a,C: set_a,B: set_a] :
      ( ( member_a @ A @ C )
     => ( ( inf_inf_set_a @ ( insert_a @ A @ B ) @ C )
        = ( insert_a @ A @ ( inf_inf_set_a @ B @ C ) ) ) ) ).

% Int_insert_left_if1
thf(fact_212_insert__inter__insert,axiom,
    ! [A: a,A2: set_a,B: set_a] :
      ( ( inf_inf_set_a @ ( insert_a @ A @ A2 ) @ ( insert_a @ A @ B ) )
      = ( insert_a @ A @ ( inf_inf_set_a @ A2 @ B ) ) ) ).

% insert_inter_insert
thf(fact_213_Int__insert__right__if0,axiom,
    ! [A: nat,A2: set_nat,B: set_nat] :
      ( ~ ( member_nat @ A @ A2 )
     => ( ( inf_inf_set_nat @ A2 @ ( insert_nat @ A @ B ) )
        = ( inf_inf_set_nat @ A2 @ B ) ) ) ).

% Int_insert_right_if0
thf(fact_214_Int__insert__right__if0,axiom,
    ! [A: a,A2: set_a,B: set_a] :
      ( ~ ( member_a @ A @ A2 )
     => ( ( inf_inf_set_a @ A2 @ ( insert_a @ A @ B ) )
        = ( inf_inf_set_a @ A2 @ B ) ) ) ).

% Int_insert_right_if0
thf(fact_215_Int__insert__right__if1,axiom,
    ! [A: nat,A2: set_nat,B: set_nat] :
      ( ( member_nat @ A @ A2 )
     => ( ( inf_inf_set_nat @ A2 @ ( insert_nat @ A @ B ) )
        = ( insert_nat @ A @ ( inf_inf_set_nat @ A2 @ B ) ) ) ) ).

% Int_insert_right_if1
thf(fact_216_Int__insert__right__if1,axiom,
    ! [A: a,A2: set_a,B: set_a] :
      ( ( member_a @ A @ A2 )
     => ( ( inf_inf_set_a @ A2 @ ( insert_a @ A @ B ) )
        = ( insert_a @ A @ ( inf_inf_set_a @ A2 @ B ) ) ) ) ).

% Int_insert_right_if1
thf(fact_217_Un__subset__iff,axiom,
    ! [A2: set_a,B: set_a,C: set_a] :
      ( ( ord_less_eq_set_a @ ( sup_sup_set_a @ A2 @ B ) @ C )
      = ( ( ord_less_eq_set_a @ A2 @ C )
        & ( ord_less_eq_set_a @ B @ C ) ) ) ).

% Un_subset_iff
thf(fact_218_Un__insert__left,axiom,
    ! [A: a,B: set_a,C: set_a] :
      ( ( sup_sup_set_a @ ( insert_a @ A @ B ) @ C )
      = ( insert_a @ A @ ( sup_sup_set_a @ B @ C ) ) ) ).

% Un_insert_left
thf(fact_219_Un__insert__right,axiom,
    ! [A2: set_a,A: a,B: set_a] :
      ( ( sup_sup_set_a @ A2 @ ( insert_a @ A @ B ) )
      = ( insert_a @ A @ ( sup_sup_set_a @ A2 @ B ) ) ) ).

% Un_insert_right
thf(fact_220_Int__Un__eq_I4_J,axiom,
    ! [T: set_a,S: set_a] :
      ( ( sup_sup_set_a @ T @ ( inf_inf_set_a @ S @ T ) )
      = T ) ).

% Int_Un_eq(4)
thf(fact_221_Int__Un__eq_I3_J,axiom,
    ! [S: set_a,T: set_a] :
      ( ( sup_sup_set_a @ S @ ( inf_inf_set_a @ S @ T ) )
      = S ) ).

% Int_Un_eq(3)
thf(fact_222_Int__Un__eq_I2_J,axiom,
    ! [S: set_a,T: set_a] :
      ( ( sup_sup_set_a @ ( inf_inf_set_a @ S @ T ) @ T )
      = T ) ).

% Int_Un_eq(2)
thf(fact_223_Int__Un__eq_I1_J,axiom,
    ! [S: set_a,T: set_a] :
      ( ( sup_sup_set_a @ ( inf_inf_set_a @ S @ T ) @ S )
      = S ) ).

% Int_Un_eq(1)
thf(fact_224_Un__Int__eq_I4_J,axiom,
    ! [T: set_a,S: set_a] :
      ( ( inf_inf_set_a @ T @ ( sup_sup_set_a @ S @ T ) )
      = T ) ).

% Un_Int_eq(4)
thf(fact_225_Un__Int__eq_I3_J,axiom,
    ! [S: set_a,T: set_a] :
      ( ( inf_inf_set_a @ S @ ( sup_sup_set_a @ S @ T ) )
      = S ) ).

% Un_Int_eq(3)
thf(fact_226_Un__Int__eq_I2_J,axiom,
    ! [S: set_a,T: set_a] :
      ( ( inf_inf_set_a @ ( sup_sup_set_a @ S @ T ) @ T )
      = T ) ).

% Un_Int_eq(2)
thf(fact_227_inverse__subgroupI,axiom,
    ! [H2: set_a] :
      ( ( group_subgroup_a @ H2 @ g @ addition @ zero )
     => ( group_subgroup_a @ ( image_a_a @ ( group_inverse_a @ g @ addition @ zero ) @ H2 ) @ g @ addition @ zero ) ) ).

% inverse_subgroupI
thf(fact_228_card__sumset__le,axiom,
    ! [A2: set_a,A: a] :
      ( ( finite_finite_a @ A2 )
     => ( ord_less_eq_nat @ ( finite_card_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ ( insert_a @ A @ bot_bot_set_a ) ) ) @ ( finite_card_a @ A2 ) ) ) ).

% card_sumset_le
thf(fact_229_card__sumset__singleton__eq,axiom,
    ! [A2: set_a,A: a] :
      ( ( finite_finite_a @ A2 )
     => ( ( ( member_a @ A @ g )
         => ( ( finite_card_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ ( insert_a @ A @ bot_bot_set_a ) ) )
            = ( finite_card_a @ ( inf_inf_set_a @ A2 @ g ) ) ) )
        & ( ~ ( member_a @ A @ g )
         => ( ( finite_card_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ ( insert_a @ A @ bot_bot_set_a ) ) )
            = zero_zero_nat ) ) ) ) ).

% card_sumset_singleton_eq
thf(fact_230_singleton__insert__inj__eq_H,axiom,
    ! [A: a,A2: set_a,B4: a] :
      ( ( ( insert_a @ A @ A2 )
        = ( insert_a @ B4 @ bot_bot_set_a ) )
      = ( ( A = B4 )
        & ( ord_less_eq_set_a @ A2 @ ( insert_a @ B4 @ bot_bot_set_a ) ) ) ) ).

% singleton_insert_inj_eq'
thf(fact_231_singleton__insert__inj__eq,axiom,
    ! [B4: a,A: a,A2: set_a] :
      ( ( ( insert_a @ B4 @ bot_bot_set_a )
        = ( insert_a @ A @ A2 ) )
      = ( ( A = B4 )
        & ( ord_less_eq_set_a @ A2 @ ( insert_a @ B4 @ bot_bot_set_a ) ) ) ) ).

% singleton_insert_inj_eq
thf(fact_232_disjoint__insert_I2_J,axiom,
    ! [A2: set_nat,B4: nat,B: set_nat] :
      ( ( bot_bot_set_nat
        = ( inf_inf_set_nat @ A2 @ ( insert_nat @ B4 @ B ) ) )
      = ( ~ ( member_nat @ B4 @ A2 )
        & ( bot_bot_set_nat
          = ( inf_inf_set_nat @ A2 @ B ) ) ) ) ).

% disjoint_insert(2)
thf(fact_233_disjoint__insert_I2_J,axiom,
    ! [A2: set_a,B4: a,B: set_a] :
      ( ( bot_bot_set_a
        = ( inf_inf_set_a @ A2 @ ( insert_a @ B4 @ B ) ) )
      = ( ~ ( member_a @ B4 @ A2 )
        & ( bot_bot_set_a
          = ( inf_inf_set_a @ A2 @ B ) ) ) ) ).

% disjoint_insert(2)
thf(fact_234_disjoint__insert_I1_J,axiom,
    ! [B: set_nat,A: nat,A2: set_nat] :
      ( ( ( inf_inf_set_nat @ B @ ( insert_nat @ A @ A2 ) )
        = bot_bot_set_nat )
      = ( ~ ( member_nat @ A @ B )
        & ( ( inf_inf_set_nat @ B @ A2 )
          = bot_bot_set_nat ) ) ) ).

% disjoint_insert(1)
thf(fact_235_disjoint__insert_I1_J,axiom,
    ! [B: set_a,A: a,A2: set_a] :
      ( ( ( inf_inf_set_a @ B @ ( insert_a @ A @ A2 ) )
        = bot_bot_set_a )
      = ( ~ ( member_a @ A @ B )
        & ( ( inf_inf_set_a @ B @ A2 )
          = bot_bot_set_a ) ) ) ).

% disjoint_insert(1)
thf(fact_236_insert__disjoint_I2_J,axiom,
    ! [A: nat,A2: set_nat,B: set_nat] :
      ( ( bot_bot_set_nat
        = ( inf_inf_set_nat @ ( insert_nat @ A @ A2 ) @ B ) )
      = ( ~ ( member_nat @ A @ B )
        & ( bot_bot_set_nat
          = ( inf_inf_set_nat @ A2 @ B ) ) ) ) ).

% insert_disjoint(2)
thf(fact_237_insert__disjoint_I2_J,axiom,
    ! [A: a,A2: set_a,B: set_a] :
      ( ( bot_bot_set_a
        = ( inf_inf_set_a @ ( insert_a @ A @ A2 ) @ B ) )
      = ( ~ ( member_a @ A @ B )
        & ( bot_bot_set_a
          = ( inf_inf_set_a @ A2 @ B ) ) ) ) ).

% insert_disjoint(2)
thf(fact_238_insert__disjoint_I1_J,axiom,
    ! [A: nat,A2: set_nat,B: set_nat] :
      ( ( ( inf_inf_set_nat @ ( insert_nat @ A @ A2 ) @ B )
        = bot_bot_set_nat )
      = ( ~ ( member_nat @ A @ B )
        & ( ( inf_inf_set_nat @ A2 @ B )
          = bot_bot_set_nat ) ) ) ).

% insert_disjoint(1)
thf(fact_239_insert__disjoint_I1_J,axiom,
    ! [A: a,A2: set_a,B: set_a] :
      ( ( ( inf_inf_set_a @ ( insert_a @ A @ A2 ) @ B )
        = bot_bot_set_a )
      = ( ~ ( member_a @ A @ B )
        & ( ( inf_inf_set_a @ A2 @ B )
          = bot_bot_set_a ) ) ) ).

% insert_disjoint(1)
thf(fact_240_inverse__subgroupD,axiom,
    ! [H2: set_a] :
      ( ( group_subgroup_a @ ( image_a_a @ ( group_inverse_a @ g @ addition @ zero ) @ H2 ) @ g @ addition @ zero )
     => ( ( ord_less_eq_set_a @ H2 @ ( group_Units_a @ g @ addition @ zero ) )
       => ( group_subgroup_a @ H2 @ g @ addition @ zero ) ) ) ).

% inverse_subgroupD
thf(fact_241_sumset__empty_I1_J,axiom,
    ! [A2: set_a] :
      ( ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ bot_bot_set_a )
      = bot_bot_set_a ) ).

% sumset_empty(1)
thf(fact_242_sumset__empty_I2_J,axiom,
    ! [A2: set_a] :
      ( ( pluenn3038260743871226533mset_a @ g @ addition @ bot_bot_set_a @ A2 )
      = bot_bot_set_a ) ).

% sumset_empty(2)
thf(fact_243_sumset__is__empty__iff,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B )
        = bot_bot_set_a )
      = ( ( ( inf_inf_set_a @ A2 @ g )
          = bot_bot_set_a )
        | ( ( inf_inf_set_a @ B @ g )
          = bot_bot_set_a ) ) ) ).

% sumset_is_empty_iff
thf(fact_244_minusset__is__empty__iff,axiom,
    ! [A2: set_a] :
      ( ( ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ A2 )
        = bot_bot_set_a )
      = ( ( inf_inf_set_a @ A2 @ g )
        = bot_bot_set_a ) ) ).

% minusset_is_empty_iff
thf(fact_245_minusset__triv,axiom,
    ( ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ ( insert_a @ zero @ bot_bot_set_a ) )
    = ( insert_a @ zero @ bot_bot_set_a ) ) ).

% minusset_triv
thf(fact_246_group__of__Units,axiom,
    group_group_a @ ( group_Units_a @ g @ addition @ zero ) @ addition @ zero ).

% group_of_Units
thf(fact_247_sumset__iterated__0,axiom,
    ! [A2: set_a] :
      ( ( pluenn1960970773371692859ated_a @ g @ addition @ zero @ A2 @ zero_zero_nat )
      = ( insert_a @ zero @ bot_bot_set_a ) ) ).

% sumset_iterated_0
thf(fact_248_sumset__D_I1_J,axiom,
    ! [A2: set_a] :
      ( ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ ( insert_a @ zero @ bot_bot_set_a ) )
      = ( inf_inf_set_a @ A2 @ g ) ) ).

% sumset_D(1)
thf(fact_249_sumset__D_I2_J,axiom,
    ! [A2: set_a] :
      ( ( pluenn3038260743871226533mset_a @ g @ addition @ ( insert_a @ zero @ bot_bot_set_a ) @ A2 )
      = ( inf_inf_set_a @ A2 @ g ) ) ).

% sumset_D(2)
thf(fact_250_emptyE,axiom,
    ! [A: nat] :
      ~ ( member_nat @ A @ bot_bot_set_nat ) ).

% emptyE
thf(fact_251_emptyE,axiom,
    ! [A: a] :
      ~ ( member_a @ A @ bot_bot_set_a ) ).

% emptyE
thf(fact_252_imageI,axiom,
    ! [X: a,A2: set_a,F: a > a] :
      ( ( member_a @ X @ A2 )
     => ( member_a @ ( F @ X ) @ ( image_a_a @ F @ A2 ) ) ) ).

% imageI
thf(fact_253_imageI,axiom,
    ! [X: a,A2: set_a,F: a > nat] :
      ( ( member_a @ X @ A2 )
     => ( member_nat @ ( F @ X ) @ ( image_a_nat @ F @ A2 ) ) ) ).

% imageI
thf(fact_254_imageI,axiom,
    ! [X: nat,A2: set_nat,F: nat > a] :
      ( ( member_nat @ X @ A2 )
     => ( member_a @ ( F @ X ) @ ( image_nat_a @ F @ A2 ) ) ) ).

% imageI
thf(fact_255_imageI,axiom,
    ! [X: nat,A2: set_nat,F: nat > nat] :
      ( ( member_nat @ X @ A2 )
     => ( member_nat @ ( F @ X ) @ ( image_nat_nat @ F @ A2 ) ) ) ).

% imageI
thf(fact_256_equals0D,axiom,
    ! [A2: set_nat,A: nat] :
      ( ( A2 = bot_bot_set_nat )
     => ~ ( member_nat @ A @ A2 ) ) ).

% equals0D
thf(fact_257_equals0D,axiom,
    ! [A2: set_a,A: a] :
      ( ( A2 = bot_bot_set_a )
     => ~ ( member_a @ A @ A2 ) ) ).

% equals0D
thf(fact_258_equals0I,axiom,
    ! [A2: set_nat] :
      ( ! [Y2: nat] :
          ~ ( member_nat @ Y2 @ A2 )
     => ( A2 = bot_bot_set_nat ) ) ).

% equals0I
thf(fact_259_equals0I,axiom,
    ! [A2: set_a] :
      ( ! [Y2: a] :
          ~ ( member_a @ Y2 @ A2 )
     => ( A2 = bot_bot_set_a ) ) ).

% equals0I
thf(fact_260_image__iff,axiom,
    ! [Z: a,F: a > a,A2: set_a] :
      ( ( member_a @ Z @ ( image_a_a @ F @ A2 ) )
      = ( ? [X2: a] :
            ( ( member_a @ X2 @ A2 )
            & ( Z
              = ( F @ X2 ) ) ) ) ) ).

% image_iff
thf(fact_261_image__iff,axiom,
    ! [Z: nat,F: nat > nat,A2: set_nat] :
      ( ( member_nat @ Z @ ( image_nat_nat @ F @ A2 ) )
      = ( ? [X2: nat] :
            ( ( member_nat @ X2 @ A2 )
            & ( Z
              = ( F @ X2 ) ) ) ) ) ).

% image_iff
thf(fact_262_bex__imageD,axiom,
    ! [F: a > a,A2: set_a,P: a > $o] :
      ( ? [X4: a] :
          ( ( member_a @ X4 @ ( image_a_a @ F @ A2 ) )
          & ( P @ X4 ) )
     => ? [X3: a] :
          ( ( member_a @ X3 @ A2 )
          & ( P @ ( F @ X3 ) ) ) ) ).

% bex_imageD
thf(fact_263_bex__imageD,axiom,
    ! [F: nat > nat,A2: set_nat,P: nat > $o] :
      ( ? [X4: nat] :
          ( ( member_nat @ X4 @ ( image_nat_nat @ F @ A2 ) )
          & ( P @ X4 ) )
     => ? [X3: nat] :
          ( ( member_nat @ X3 @ A2 )
          & ( P @ ( F @ X3 ) ) ) ) ).

% bex_imageD
thf(fact_264_ex__in__conv,axiom,
    ! [A2: set_nat] :
      ( ( ? [X2: nat] : ( member_nat @ X2 @ A2 ) )
      = ( A2 != bot_bot_set_nat ) ) ).

% ex_in_conv
thf(fact_265_ex__in__conv,axiom,
    ! [A2: set_a] :
      ( ( ? [X2: a] : ( member_a @ X2 @ A2 ) )
      = ( A2 != bot_bot_set_a ) ) ).

% ex_in_conv
thf(fact_266_image__cong,axiom,
    ! [M: set_a,N: set_a,F: a > a,G3: a > a] :
      ( ( M = N )
     => ( ! [X3: a] :
            ( ( member_a @ X3 @ N )
           => ( ( F @ X3 )
              = ( G3 @ X3 ) ) )
       => ( ( image_a_a @ F @ M )
          = ( image_a_a @ G3 @ N ) ) ) ) ).

% image_cong
thf(fact_267_image__cong,axiom,
    ! [M: set_nat,N: set_nat,F: nat > nat,G3: nat > nat] :
      ( ( M = N )
     => ( ! [X3: nat] :
            ( ( member_nat @ X3 @ N )
           => ( ( F @ X3 )
              = ( G3 @ X3 ) ) )
       => ( ( image_nat_nat @ F @ M )
          = ( image_nat_nat @ G3 @ N ) ) ) ) ).

% image_cong
thf(fact_268_ball__imageD,axiom,
    ! [F: a > a,A2: set_a,P: a > $o] :
      ( ! [X3: a] :
          ( ( member_a @ X3 @ ( image_a_a @ F @ A2 ) )
         => ( P @ X3 ) )
     => ! [X4: a] :
          ( ( member_a @ X4 @ A2 )
         => ( P @ ( F @ X4 ) ) ) ) ).

% ball_imageD
thf(fact_269_ball__imageD,axiom,
    ! [F: nat > nat,A2: set_nat,P: nat > $o] :
      ( ! [X3: nat] :
          ( ( member_nat @ X3 @ ( image_nat_nat @ F @ A2 ) )
         => ( P @ X3 ) )
     => ! [X4: nat] :
          ( ( member_nat @ X4 @ A2 )
         => ( P @ ( F @ X4 ) ) ) ) ).

% ball_imageD
thf(fact_270_rev__image__eqI,axiom,
    ! [X: a,A2: set_a,B4: a,F: a > a] :
      ( ( member_a @ X @ A2 )
     => ( ( B4
          = ( F @ X ) )
       => ( member_a @ B4 @ ( image_a_a @ F @ A2 ) ) ) ) ).

% rev_image_eqI
thf(fact_271_rev__image__eqI,axiom,
    ! [X: a,A2: set_a,B4: nat,F: a > nat] :
      ( ( member_a @ X @ A2 )
     => ( ( B4
          = ( F @ X ) )
       => ( member_nat @ B4 @ ( image_a_nat @ F @ A2 ) ) ) ) ).

% rev_image_eqI
thf(fact_272_rev__image__eqI,axiom,
    ! [X: nat,A2: set_nat,B4: a,F: nat > a] :
      ( ( member_nat @ X @ A2 )
     => ( ( B4
          = ( F @ X ) )
       => ( member_a @ B4 @ ( image_nat_a @ F @ A2 ) ) ) ) ).

% rev_image_eqI
thf(fact_273_rev__image__eqI,axiom,
    ! [X: nat,A2: set_nat,B4: nat,F: nat > nat] :
      ( ( member_nat @ X @ A2 )
     => ( ( B4
          = ( F @ X ) )
       => ( member_nat @ B4 @ ( image_nat_nat @ F @ A2 ) ) ) ) ).

% rev_image_eqI
thf(fact_274_image__mono,axiom,
    ! [A2: set_nat,B: set_nat,F: nat > nat] :
      ( ( ord_less_eq_set_nat @ A2 @ B )
     => ( ord_less_eq_set_nat @ ( image_nat_nat @ F @ A2 ) @ ( image_nat_nat @ F @ B ) ) ) ).

% image_mono
thf(fact_275_image__mono,axiom,
    ! [A2: set_a,B: set_a,F: a > a] :
      ( ( ord_less_eq_set_a @ A2 @ B )
     => ( ord_less_eq_set_a @ ( image_a_a @ F @ A2 ) @ ( image_a_a @ F @ B ) ) ) ).

% image_mono
thf(fact_276_image__subsetI,axiom,
    ! [A2: set_a,F: a > nat,B: set_nat] :
      ( ! [X3: a] :
          ( ( member_a @ X3 @ A2 )
         => ( member_nat @ ( F @ X3 ) @ B ) )
     => ( ord_less_eq_set_nat @ ( image_a_nat @ F @ A2 ) @ B ) ) ).

% image_subsetI
thf(fact_277_image__subsetI,axiom,
    ! [A2: set_nat,F: nat > nat,B: set_nat] :
      ( ! [X3: nat] :
          ( ( member_nat @ X3 @ A2 )
         => ( member_nat @ ( F @ X3 ) @ B ) )
     => ( ord_less_eq_set_nat @ ( image_nat_nat @ F @ A2 ) @ B ) ) ).

% image_subsetI
thf(fact_278_image__subsetI,axiom,
    ! [A2: set_a,F: a > a,B: set_a] :
      ( ! [X3: a] :
          ( ( member_a @ X3 @ A2 )
         => ( member_a @ ( F @ X3 ) @ B ) )
     => ( ord_less_eq_set_a @ ( image_a_a @ F @ A2 ) @ B ) ) ).

% image_subsetI
thf(fact_279_image__subsetI,axiom,
    ! [A2: set_nat,F: nat > a,B: set_a] :
      ( ! [X3: nat] :
          ( ( member_nat @ X3 @ A2 )
         => ( member_a @ ( F @ X3 ) @ B ) )
     => ( ord_less_eq_set_a @ ( image_nat_a @ F @ A2 ) @ B ) ) ).

% image_subsetI
thf(fact_280_subset__imageE,axiom,
    ! [B: set_nat,F: nat > nat,A2: set_nat] :
      ( ( ord_less_eq_set_nat @ B @ ( image_nat_nat @ F @ A2 ) )
     => ~ ! [C3: set_nat] :
            ( ( ord_less_eq_set_nat @ C3 @ A2 )
           => ( B
             != ( image_nat_nat @ F @ C3 ) ) ) ) ).

% subset_imageE
thf(fact_281_subset__imageE,axiom,
    ! [B: set_a,F: a > a,A2: set_a] :
      ( ( ord_less_eq_set_a @ B @ ( image_a_a @ F @ A2 ) )
     => ~ ! [C3: set_a] :
            ( ( ord_less_eq_set_a @ C3 @ A2 )
           => ( B
             != ( image_a_a @ F @ C3 ) ) ) ) ).

% subset_imageE
thf(fact_282_image__subset__iff,axiom,
    ! [F: nat > nat,A2: set_nat,B: set_nat] :
      ( ( ord_less_eq_set_nat @ ( image_nat_nat @ F @ A2 ) @ B )
      = ( ! [X2: nat] :
            ( ( member_nat @ X2 @ A2 )
           => ( member_nat @ ( F @ X2 ) @ B ) ) ) ) ).

% image_subset_iff
thf(fact_283_image__subset__iff,axiom,
    ! [F: a > a,A2: set_a,B: set_a] :
      ( ( ord_less_eq_set_a @ ( image_a_a @ F @ A2 ) @ B )
      = ( ! [X2: a] :
            ( ( member_a @ X2 @ A2 )
           => ( member_a @ ( F @ X2 ) @ B ) ) ) ) ).

% image_subset_iff
thf(fact_284_subset__image__iff,axiom,
    ! [B: set_nat,F: nat > nat,A2: set_nat] :
      ( ( ord_less_eq_set_nat @ B @ ( image_nat_nat @ F @ A2 ) )
      = ( ? [AA: set_nat] :
            ( ( ord_less_eq_set_nat @ AA @ A2 )
            & ( B
              = ( image_nat_nat @ F @ AA ) ) ) ) ) ).

% subset_image_iff
thf(fact_285_subset__image__iff,axiom,
    ! [B: set_a,F: a > a,A2: set_a] :
      ( ( ord_less_eq_set_a @ B @ ( image_a_a @ F @ A2 ) )
      = ( ? [AA: set_a] :
            ( ( ord_less_eq_set_a @ AA @ A2 )
            & ( B
              = ( image_a_a @ F @ AA ) ) ) ) ) ).

% subset_image_iff
thf(fact_286_image__Un,axiom,
    ! [F: nat > nat,A2: set_nat,B: set_nat] :
      ( ( image_nat_nat @ F @ ( sup_sup_set_nat @ A2 @ B ) )
      = ( sup_sup_set_nat @ ( image_nat_nat @ F @ A2 ) @ ( image_nat_nat @ F @ B ) ) ) ).

% image_Un
thf(fact_287_image__Un,axiom,
    ! [F: a > a,A2: set_a,B: set_a] :
      ( ( image_a_a @ F @ ( sup_sup_set_a @ A2 @ B ) )
      = ( sup_sup_set_a @ ( image_a_a @ F @ A2 ) @ ( image_a_a @ F @ B ) ) ) ).

% image_Un
thf(fact_288_singletonD,axiom,
    ! [B4: nat,A: nat] :
      ( ( member_nat @ B4 @ ( insert_nat @ A @ bot_bot_set_nat ) )
     => ( B4 = A ) ) ).

% singletonD
thf(fact_289_singletonD,axiom,
    ! [B4: a,A: a] :
      ( ( member_a @ B4 @ ( insert_a @ A @ bot_bot_set_a ) )
     => ( B4 = A ) ) ).

% singletonD
thf(fact_290_singleton__iff,axiom,
    ! [B4: nat,A: nat] :
      ( ( member_nat @ B4 @ ( insert_nat @ A @ bot_bot_set_nat ) )
      = ( B4 = A ) ) ).

% singleton_iff
thf(fact_291_singleton__iff,axiom,
    ! [B4: a,A: a] :
      ( ( member_a @ B4 @ ( insert_a @ A @ bot_bot_set_a ) )
      = ( B4 = A ) ) ).

% singleton_iff
thf(fact_292_doubleton__eq__iff,axiom,
    ! [A: a,B4: a,C2: a,D: a] :
      ( ( ( insert_a @ A @ ( insert_a @ B4 @ bot_bot_set_a ) )
        = ( insert_a @ C2 @ ( insert_a @ D @ bot_bot_set_a ) ) )
      = ( ( ( A = C2 )
          & ( B4 = D ) )
        | ( ( A = D )
          & ( B4 = C2 ) ) ) ) ).

% doubleton_eq_iff
thf(fact_293_insert__not__empty,axiom,
    ! [A: a,A2: set_a] :
      ( ( insert_a @ A @ A2 )
     != bot_bot_set_a ) ).

% insert_not_empty
thf(fact_294_singleton__inject,axiom,
    ! [A: a,B4: a] :
      ( ( ( insert_a @ A @ bot_bot_set_a )
        = ( insert_a @ B4 @ bot_bot_set_a ) )
     => ( A = B4 ) ) ).

% singleton_inject
thf(fact_295_Int__emptyI,axiom,
    ! [A2: set_nat,B: set_nat] :
      ( ! [X3: nat] :
          ( ( member_nat @ X3 @ A2 )
         => ~ ( member_nat @ X3 @ B ) )
     => ( ( inf_inf_set_nat @ A2 @ B )
        = bot_bot_set_nat ) ) ).

% Int_emptyI
thf(fact_296_Int__emptyI,axiom,
    ! [A2: set_a,B: set_a] :
      ( ! [X3: a] :
          ( ( member_a @ X3 @ A2 )
         => ~ ( member_a @ X3 @ B ) )
     => ( ( inf_inf_set_a @ A2 @ B )
        = bot_bot_set_a ) ) ).

% Int_emptyI
thf(fact_297_disjoint__iff,axiom,
    ! [A2: set_nat,B: set_nat] :
      ( ( ( inf_inf_set_nat @ A2 @ B )
        = bot_bot_set_nat )
      = ( ! [X2: nat] :
            ( ( member_nat @ X2 @ A2 )
           => ~ ( member_nat @ X2 @ B ) ) ) ) ).

% disjoint_iff
thf(fact_298_disjoint__iff,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( ( inf_inf_set_a @ A2 @ B )
        = bot_bot_set_a )
      = ( ! [X2: a] :
            ( ( member_a @ X2 @ A2 )
           => ~ ( member_a @ X2 @ B ) ) ) ) ).

% disjoint_iff
thf(fact_299_Int__empty__left,axiom,
    ! [B: set_a] :
      ( ( inf_inf_set_a @ bot_bot_set_a @ B )
      = bot_bot_set_a ) ).

% Int_empty_left
thf(fact_300_Int__empty__right,axiom,
    ! [A2: set_a] :
      ( ( inf_inf_set_a @ A2 @ bot_bot_set_a )
      = bot_bot_set_a ) ).

% Int_empty_right
thf(fact_301_disjoint__iff__not__equal,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( ( inf_inf_set_a @ A2 @ B )
        = bot_bot_set_a )
      = ( ! [X2: a] :
            ( ( member_a @ X2 @ A2 )
           => ! [Y3: a] :
                ( ( member_a @ Y3 @ B )
               => ( X2 != Y3 ) ) ) ) ) ).

% disjoint_iff_not_equal
thf(fact_302_Un__empty__left,axiom,
    ! [B: set_a] :
      ( ( sup_sup_set_a @ bot_bot_set_a @ B )
      = B ) ).

% Un_empty_left
thf(fact_303_Un__empty__right,axiom,
    ! [A2: set_a] :
      ( ( sup_sup_set_a @ A2 @ bot_bot_set_a )
      = A2 ) ).

% Un_empty_right
thf(fact_304_image__Int__subset,axiom,
    ! [F: nat > nat,A2: set_nat,B: set_nat] : ( ord_less_eq_set_nat @ ( image_nat_nat @ F @ ( inf_inf_set_nat @ A2 @ B ) ) @ ( inf_inf_set_nat @ ( image_nat_nat @ F @ A2 ) @ ( image_nat_nat @ F @ B ) ) ) ).

% image_Int_subset
thf(fact_305_image__Int__subset,axiom,
    ! [F: a > a,A2: set_a,B: set_a] : ( ord_less_eq_set_a @ ( image_a_a @ F @ ( inf_inf_set_a @ A2 @ B ) ) @ ( inf_inf_set_a @ ( image_a_a @ F @ A2 ) @ ( image_a_a @ F @ B ) ) ) ).

% image_Int_subset
thf(fact_306_subset__singleton__iff,axiom,
    ! [X5: set_a,A: a] :
      ( ( ord_less_eq_set_a @ X5 @ ( insert_a @ A @ bot_bot_set_a ) )
      = ( ( X5 = bot_bot_set_a )
        | ( X5
          = ( insert_a @ A @ bot_bot_set_a ) ) ) ) ).

% subset_singleton_iff
thf(fact_307_subset__singletonD,axiom,
    ! [A2: set_a,X: a] :
      ( ( ord_less_eq_set_a @ A2 @ ( insert_a @ X @ bot_bot_set_a ) )
     => ( ( A2 = bot_bot_set_a )
        | ( A2
          = ( insert_a @ X @ bot_bot_set_a ) ) ) ) ).

% subset_singletonD
thf(fact_308_insert__is__Un,axiom,
    ( insert_a
    = ( ^ [A4: a] : ( sup_sup_set_a @ ( insert_a @ A4 @ bot_bot_set_a ) ) ) ) ).

% insert_is_Un
thf(fact_309_Un__singleton__iff,axiom,
    ! [A2: set_a,B: set_a,X: a] :
      ( ( ( sup_sup_set_a @ A2 @ B )
        = ( insert_a @ X @ bot_bot_set_a ) )
      = ( ( ( A2 = bot_bot_set_a )
          & ( B
            = ( insert_a @ X @ bot_bot_set_a ) ) )
        | ( ( A2
            = ( insert_a @ X @ bot_bot_set_a ) )
          & ( B = bot_bot_set_a ) )
        | ( ( A2
            = ( insert_a @ X @ bot_bot_set_a ) )
          & ( B
            = ( insert_a @ X @ bot_bot_set_a ) ) ) ) ) ).

% Un_singleton_iff
thf(fact_310_singleton__Un__iff,axiom,
    ! [X: a,A2: set_a,B: set_a] :
      ( ( ( insert_a @ X @ bot_bot_set_a )
        = ( sup_sup_set_a @ A2 @ B ) )
      = ( ( ( A2 = bot_bot_set_a )
          & ( B
            = ( insert_a @ X @ bot_bot_set_a ) ) )
        | ( ( A2
            = ( insert_a @ X @ bot_bot_set_a ) )
          & ( B = bot_bot_set_a ) )
        | ( ( A2
            = ( insert_a @ X @ bot_bot_set_a ) )
          & ( B
            = ( insert_a @ X @ bot_bot_set_a ) ) ) ) ) ).

% singleton_Un_iff
thf(fact_311_additive__abelian__group_Osumset__iterated__0,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( pluenn1960970773371692859ated_a @ G @ Addition @ Zero @ A2 @ zero_zero_nat )
        = ( insert_a @ Zero @ bot_bot_set_a ) ) ) ).

% additive_abelian_group.sumset_iterated_0
thf(fact_312_additive__abelian__group_Osumset__empty_I1_J,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ bot_bot_set_a )
        = bot_bot_set_a ) ) ).

% additive_abelian_group.sumset_empty(1)
thf(fact_313_additive__abelian__group_Osumset__empty_I2_J,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( pluenn3038260743871226533mset_a @ G @ Addition @ bot_bot_set_a @ A2 )
        = bot_bot_set_a ) ) ).

% additive_abelian_group.sumset_empty(2)
thf(fact_314_additive__abelian__group_Ocard__sumset__le,axiom,
    ! [G: set_nat,Addition: nat > nat > nat,Zero: nat,A2: set_nat,A: nat] :
      ( ( pluenn2073725187428264546up_nat @ G @ Addition @ Zero )
     => ( ( finite_finite_nat @ A2 )
       => ( ord_less_eq_nat @ ( finite_card_nat @ ( pluenn3669378163024332905et_nat @ G @ Addition @ A2 @ ( insert_nat @ A @ bot_bot_set_nat ) ) ) @ ( finite_card_nat @ A2 ) ) ) ) ).

% additive_abelian_group.card_sumset_le
thf(fact_315_additive__abelian__group_Ocard__sumset__le,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,A: a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( finite_finite_a @ A2 )
       => ( ord_less_eq_nat @ ( finite_card_a @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ ( insert_a @ A @ bot_bot_set_a ) ) ) @ ( finite_card_a @ A2 ) ) ) ) ).

% additive_abelian_group.card_sumset_le
thf(fact_316_additive__abelian__group_Ocard__sumset__singleton__eq,axiom,
    ! [G: set_nat,Addition: nat > nat > nat,Zero: nat,A2: set_nat,A: nat] :
      ( ( pluenn2073725187428264546up_nat @ G @ Addition @ Zero )
     => ( ( finite_finite_nat @ A2 )
       => ( ( ( member_nat @ A @ G )
           => ( ( finite_card_nat @ ( pluenn3669378163024332905et_nat @ G @ Addition @ A2 @ ( insert_nat @ A @ bot_bot_set_nat ) ) )
              = ( finite_card_nat @ ( inf_inf_set_nat @ A2 @ G ) ) ) )
          & ( ~ ( member_nat @ A @ G )
           => ( ( finite_card_nat @ ( pluenn3669378163024332905et_nat @ G @ Addition @ A2 @ ( insert_nat @ A @ bot_bot_set_nat ) ) )
              = zero_zero_nat ) ) ) ) ) ).

% additive_abelian_group.card_sumset_singleton_eq
thf(fact_317_additive__abelian__group_Ocard__sumset__singleton__eq,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,A: a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( finite_finite_a @ A2 )
       => ( ( ( member_a @ A @ G )
           => ( ( finite_card_a @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ ( insert_a @ A @ bot_bot_set_a ) ) )
              = ( finite_card_a @ ( inf_inf_set_a @ A2 @ G ) ) ) )
          & ( ~ ( member_a @ A @ G )
           => ( ( finite_card_a @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ ( insert_a @ A @ bot_bot_set_a ) ) )
              = zero_zero_nat ) ) ) ) ) ).

% additive_abelian_group.card_sumset_singleton_eq
thf(fact_318_in__mono,axiom,
    ! [A2: set_nat,B: set_nat,X: nat] :
      ( ( ord_less_eq_set_nat @ A2 @ B )
     => ( ( member_nat @ X @ A2 )
       => ( member_nat @ X @ B ) ) ) ).

% in_mono
thf(fact_319_in__mono,axiom,
    ! [A2: set_a,B: set_a,X: a] :
      ( ( ord_less_eq_set_a @ A2 @ B )
     => ( ( member_a @ X @ A2 )
       => ( member_a @ X @ B ) ) ) ).

% in_mono
thf(fact_320_subsetD,axiom,
    ! [A2: set_nat,B: set_nat,C2: nat] :
      ( ( ord_less_eq_set_nat @ A2 @ B )
     => ( ( member_nat @ C2 @ A2 )
       => ( member_nat @ C2 @ B ) ) ) ).

% subsetD
thf(fact_321_subsetD,axiom,
    ! [A2: set_a,B: set_a,C2: a] :
      ( ( ord_less_eq_set_a @ A2 @ B )
     => ( ( member_a @ C2 @ A2 )
       => ( member_a @ C2 @ B ) ) ) ).

% subsetD
thf(fact_322_equalityE,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( A2 = B )
     => ~ ( ( ord_less_eq_set_a @ A2 @ B )
         => ~ ( ord_less_eq_set_a @ B @ A2 ) ) ) ).

% equalityE
thf(fact_323_subset__eq,axiom,
    ( ord_less_eq_set_nat
    = ( ^ [A6: set_nat,B6: set_nat] :
        ! [X2: nat] :
          ( ( member_nat @ X2 @ A6 )
         => ( member_nat @ X2 @ B6 ) ) ) ) ).

% subset_eq
thf(fact_324_subset__eq,axiom,
    ( ord_less_eq_set_a
    = ( ^ [A6: set_a,B6: set_a] :
        ! [X2: a] :
          ( ( member_a @ X2 @ A6 )
         => ( member_a @ X2 @ B6 ) ) ) ) ).

% subset_eq
thf(fact_325_equalityD1,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( A2 = B )
     => ( ord_less_eq_set_a @ A2 @ B ) ) ).

% equalityD1
thf(fact_326_equalityD2,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( A2 = B )
     => ( ord_less_eq_set_a @ B @ A2 ) ) ).

% equalityD2
thf(fact_327_subset__iff,axiom,
    ( ord_less_eq_set_nat
    = ( ^ [A6: set_nat,B6: set_nat] :
        ! [T2: nat] :
          ( ( member_nat @ T2 @ A6 )
         => ( member_nat @ T2 @ B6 ) ) ) ) ).

% subset_iff
thf(fact_328_subset__iff,axiom,
    ( ord_less_eq_set_a
    = ( ^ [A6: set_a,B6: set_a] :
        ! [T2: a] :
          ( ( member_a @ T2 @ A6 )
         => ( member_a @ T2 @ B6 ) ) ) ) ).

% subset_iff
thf(fact_329_subset__refl,axiom,
    ! [A2: set_a] : ( ord_less_eq_set_a @ A2 @ A2 ) ).

% subset_refl
thf(fact_330_Collect__mono,axiom,
    ! [P: a > $o,Q: a > $o] :
      ( ! [X3: a] :
          ( ( P @ X3 )
         => ( Q @ X3 ) )
     => ( ord_less_eq_set_a @ ( collect_a @ P ) @ ( collect_a @ Q ) ) ) ).

% Collect_mono
thf(fact_331_subset__trans,axiom,
    ! [A2: set_a,B: set_a,C: set_a] :
      ( ( ord_less_eq_set_a @ A2 @ B )
     => ( ( ord_less_eq_set_a @ B @ C )
       => ( ord_less_eq_set_a @ A2 @ C ) ) ) ).

% subset_trans
thf(fact_332_set__eq__subset,axiom,
    ( ( ^ [Y4: set_a,Z2: set_a] : ( Y4 = Z2 ) )
    = ( ^ [A6: set_a,B6: set_a] :
          ( ( ord_less_eq_set_a @ A6 @ B6 )
          & ( ord_less_eq_set_a @ B6 @ A6 ) ) ) ) ).

% set_eq_subset
thf(fact_333_Collect__mono__iff,axiom,
    ! [P: a > $o,Q: a > $o] :
      ( ( ord_less_eq_set_a @ ( collect_a @ P ) @ ( collect_a @ Q ) )
      = ( ! [X2: a] :
            ( ( P @ X2 )
           => ( Q @ X2 ) ) ) ) ).

% Collect_mono_iff
thf(fact_334_insertE,axiom,
    ! [A: a,B4: a,A2: set_a] :
      ( ( member_a @ A @ ( insert_a @ B4 @ A2 ) )
     => ( ( A != B4 )
       => ( member_a @ A @ A2 ) ) ) ).

% insertE
thf(fact_335_insertE,axiom,
    ! [A: nat,B4: nat,A2: set_nat] :
      ( ( member_nat @ A @ ( insert_nat @ B4 @ A2 ) )
     => ( ( A != B4 )
       => ( member_nat @ A @ A2 ) ) ) ).

% insertE
thf(fact_336_insertI1,axiom,
    ! [A: a,B: set_a] : ( member_a @ A @ ( insert_a @ A @ B ) ) ).

% insertI1
thf(fact_337_insertI1,axiom,
    ! [A: nat,B: set_nat] : ( member_nat @ A @ ( insert_nat @ A @ B ) ) ).

% insertI1
thf(fact_338_insertI2,axiom,
    ! [A: a,B: set_a,B4: a] :
      ( ( member_a @ A @ B )
     => ( member_a @ A @ ( insert_a @ B4 @ B ) ) ) ).

% insertI2
thf(fact_339_insertI2,axiom,
    ! [A: nat,B: set_nat,B4: nat] :
      ( ( member_nat @ A @ B )
     => ( member_nat @ A @ ( insert_nat @ B4 @ B ) ) ) ).

% insertI2
thf(fact_340_Set_Oset__insert,axiom,
    ! [X: a,A2: set_a] :
      ( ( member_a @ X @ A2 )
     => ~ ! [B7: set_a] :
            ( ( A2
              = ( insert_a @ X @ B7 ) )
           => ( member_a @ X @ B7 ) ) ) ).

% Set.set_insert
thf(fact_341_Set_Oset__insert,axiom,
    ! [X: nat,A2: set_nat] :
      ( ( member_nat @ X @ A2 )
     => ~ ! [B7: set_nat] :
            ( ( A2
              = ( insert_nat @ X @ B7 ) )
           => ( member_nat @ X @ B7 ) ) ) ).

% Set.set_insert
thf(fact_342_insert__ident,axiom,
    ! [X: a,A2: set_a,B: set_a] :
      ( ~ ( member_a @ X @ A2 )
     => ( ~ ( member_a @ X @ B )
       => ( ( ( insert_a @ X @ A2 )
            = ( insert_a @ X @ B ) )
          = ( A2 = B ) ) ) ) ).

% insert_ident
thf(fact_343_insert__ident,axiom,
    ! [X: nat,A2: set_nat,B: set_nat] :
      ( ~ ( member_nat @ X @ A2 )
     => ( ~ ( member_nat @ X @ B )
       => ( ( ( insert_nat @ X @ A2 )
            = ( insert_nat @ X @ B ) )
          = ( A2 = B ) ) ) ) ).

% insert_ident
thf(fact_344_insert__absorb,axiom,
    ! [A: a,A2: set_a] :
      ( ( member_a @ A @ A2 )
     => ( ( insert_a @ A @ A2 )
        = A2 ) ) ).

% insert_absorb
thf(fact_345_insert__absorb,axiom,
    ! [A: nat,A2: set_nat] :
      ( ( member_nat @ A @ A2 )
     => ( ( insert_nat @ A @ A2 )
        = A2 ) ) ).

% insert_absorb
thf(fact_346_insert__eq__iff,axiom,
    ! [A: a,A2: set_a,B4: a,B: set_a] :
      ( ~ ( member_a @ A @ A2 )
     => ( ~ ( member_a @ B4 @ B )
       => ( ( ( insert_a @ A @ A2 )
            = ( insert_a @ B4 @ B ) )
          = ( ( ( A = B4 )
             => ( A2 = B ) )
            & ( ( A != B4 )
             => ? [C4: set_a] :
                  ( ( A2
                    = ( insert_a @ B4 @ C4 ) )
                  & ~ ( member_a @ B4 @ C4 )
                  & ( B
                    = ( insert_a @ A @ C4 ) )
                  & ~ ( member_a @ A @ C4 ) ) ) ) ) ) ) ).

% insert_eq_iff
thf(fact_347_insert__eq__iff,axiom,
    ! [A: nat,A2: set_nat,B4: nat,B: set_nat] :
      ( ~ ( member_nat @ A @ A2 )
     => ( ~ ( member_nat @ B4 @ B )
       => ( ( ( insert_nat @ A @ A2 )
            = ( insert_nat @ B4 @ B ) )
          = ( ( ( A = B4 )
             => ( A2 = B ) )
            & ( ( A != B4 )
             => ? [C4: set_nat] :
                  ( ( A2
                    = ( insert_nat @ B4 @ C4 ) )
                  & ~ ( member_nat @ B4 @ C4 )
                  & ( B
                    = ( insert_nat @ A @ C4 ) )
                  & ~ ( member_nat @ A @ C4 ) ) ) ) ) ) ) ).

% insert_eq_iff
thf(fact_348_insert__commute,axiom,
    ! [X: a,Y: a,A2: set_a] :
      ( ( insert_a @ X @ ( insert_a @ Y @ A2 ) )
      = ( insert_a @ Y @ ( insert_a @ X @ A2 ) ) ) ).

% insert_commute
thf(fact_349_mk__disjoint__insert,axiom,
    ! [A: a,A2: set_a] :
      ( ( member_a @ A @ A2 )
     => ? [B7: set_a] :
          ( ( A2
            = ( insert_a @ A @ B7 ) )
          & ~ ( member_a @ A @ B7 ) ) ) ).

% mk_disjoint_insert
thf(fact_350_mk__disjoint__insert,axiom,
    ! [A: nat,A2: set_nat] :
      ( ( member_nat @ A @ A2 )
     => ? [B7: set_nat] :
          ( ( A2
            = ( insert_nat @ A @ B7 ) )
          & ~ ( member_nat @ A @ B7 ) ) ) ).

% mk_disjoint_insert
thf(fact_351_IntE,axiom,
    ! [C2: nat,A2: set_nat,B: set_nat] :
      ( ( member_nat @ C2 @ ( inf_inf_set_nat @ A2 @ B ) )
     => ~ ( ( member_nat @ C2 @ A2 )
         => ~ ( member_nat @ C2 @ B ) ) ) ).

% IntE
thf(fact_352_IntE,axiom,
    ! [C2: a,A2: set_a,B: set_a] :
      ( ( member_a @ C2 @ ( inf_inf_set_a @ A2 @ B ) )
     => ~ ( ( member_a @ C2 @ A2 )
         => ~ ( member_a @ C2 @ B ) ) ) ).

% IntE
thf(fact_353_IntD1,axiom,
    ! [C2: nat,A2: set_nat,B: set_nat] :
      ( ( member_nat @ C2 @ ( inf_inf_set_nat @ A2 @ B ) )
     => ( member_nat @ C2 @ A2 ) ) ).

% IntD1
thf(fact_354_IntD1,axiom,
    ! [C2: a,A2: set_a,B: set_a] :
      ( ( member_a @ C2 @ ( inf_inf_set_a @ A2 @ B ) )
     => ( member_a @ C2 @ A2 ) ) ).

% IntD1
thf(fact_355_IntD2,axiom,
    ! [C2: nat,A2: set_nat,B: set_nat] :
      ( ( member_nat @ C2 @ ( inf_inf_set_nat @ A2 @ B ) )
     => ( member_nat @ C2 @ B ) ) ).

% IntD2
thf(fact_356_IntD2,axiom,
    ! [C2: a,A2: set_a,B: set_a] :
      ( ( member_a @ C2 @ ( inf_inf_set_a @ A2 @ B ) )
     => ( member_a @ C2 @ B ) ) ).

% IntD2
thf(fact_357_Int__assoc,axiom,
    ! [A2: set_a,B: set_a,C: set_a] :
      ( ( inf_inf_set_a @ ( inf_inf_set_a @ A2 @ B ) @ C )
      = ( inf_inf_set_a @ A2 @ ( inf_inf_set_a @ B @ C ) ) ) ).

% Int_assoc
thf(fact_358_Int__absorb,axiom,
    ! [A2: set_a] :
      ( ( inf_inf_set_a @ A2 @ A2 )
      = A2 ) ).

% Int_absorb
thf(fact_359_Int__commute,axiom,
    ( inf_inf_set_a
    = ( ^ [A6: set_a,B6: set_a] : ( inf_inf_set_a @ B6 @ A6 ) ) ) ).

% Int_commute
thf(fact_360_Int__left__absorb,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( inf_inf_set_a @ A2 @ ( inf_inf_set_a @ A2 @ B ) )
      = ( inf_inf_set_a @ A2 @ B ) ) ).

% Int_left_absorb
thf(fact_361_Int__left__commute,axiom,
    ! [A2: set_a,B: set_a,C: set_a] :
      ( ( inf_inf_set_a @ A2 @ ( inf_inf_set_a @ B @ C ) )
      = ( inf_inf_set_a @ B @ ( inf_inf_set_a @ A2 @ C ) ) ) ).

% Int_left_commute
thf(fact_362_UnE,axiom,
    ! [C2: nat,A2: set_nat,B: set_nat] :
      ( ( member_nat @ C2 @ ( sup_sup_set_nat @ A2 @ B ) )
     => ( ~ ( member_nat @ C2 @ A2 )
       => ( member_nat @ C2 @ B ) ) ) ).

% UnE
thf(fact_363_UnE,axiom,
    ! [C2: a,A2: set_a,B: set_a] :
      ( ( member_a @ C2 @ ( sup_sup_set_a @ A2 @ B ) )
     => ( ~ ( member_a @ C2 @ A2 )
       => ( member_a @ C2 @ B ) ) ) ).

% UnE
thf(fact_364_UnI1,axiom,
    ! [C2: nat,A2: set_nat,B: set_nat] :
      ( ( member_nat @ C2 @ A2 )
     => ( member_nat @ C2 @ ( sup_sup_set_nat @ A2 @ B ) ) ) ).

% UnI1
thf(fact_365_UnI1,axiom,
    ! [C2: a,A2: set_a,B: set_a] :
      ( ( member_a @ C2 @ A2 )
     => ( member_a @ C2 @ ( sup_sup_set_a @ A2 @ B ) ) ) ).

% UnI1
thf(fact_366_UnI2,axiom,
    ! [C2: nat,B: set_nat,A2: set_nat] :
      ( ( member_nat @ C2 @ B )
     => ( member_nat @ C2 @ ( sup_sup_set_nat @ A2 @ B ) ) ) ).

% UnI2
thf(fact_367_UnI2,axiom,
    ! [C2: a,B: set_a,A2: set_a] :
      ( ( member_a @ C2 @ B )
     => ( member_a @ C2 @ ( sup_sup_set_a @ A2 @ B ) ) ) ).

% UnI2
thf(fact_368_bex__Un,axiom,
    ! [A2: set_a,B: set_a,P: a > $o] :
      ( ( ? [X2: a] :
            ( ( member_a @ X2 @ ( sup_sup_set_a @ A2 @ B ) )
            & ( P @ X2 ) ) )
      = ( ? [X2: a] :
            ( ( member_a @ X2 @ A2 )
            & ( P @ X2 ) )
        | ? [X2: a] :
            ( ( member_a @ X2 @ B )
            & ( P @ X2 ) ) ) ) ).

% bex_Un
thf(fact_369_ball__Un,axiom,
    ! [A2: set_a,B: set_a,P: a > $o] :
      ( ( ! [X2: a] :
            ( ( member_a @ X2 @ ( sup_sup_set_a @ A2 @ B ) )
           => ( P @ X2 ) ) )
      = ( ! [X2: a] :
            ( ( member_a @ X2 @ A2 )
           => ( P @ X2 ) )
        & ! [X2: a] :
            ( ( member_a @ X2 @ B )
           => ( P @ X2 ) ) ) ) ).

% ball_Un
thf(fact_370_Un__assoc,axiom,
    ! [A2: set_a,B: set_a,C: set_a] :
      ( ( sup_sup_set_a @ ( sup_sup_set_a @ A2 @ B ) @ C )
      = ( sup_sup_set_a @ A2 @ ( sup_sup_set_a @ B @ C ) ) ) ).

% Un_assoc
thf(fact_371_Un__absorb,axiom,
    ! [A2: set_a] :
      ( ( sup_sup_set_a @ A2 @ A2 )
      = A2 ) ).

% Un_absorb
thf(fact_372_Un__commute,axiom,
    ( sup_sup_set_a
    = ( ^ [A6: set_a,B6: set_a] : ( sup_sup_set_a @ B6 @ A6 ) ) ) ).

% Un_commute
thf(fact_373_Un__left__absorb,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( sup_sup_set_a @ A2 @ ( sup_sup_set_a @ A2 @ B ) )
      = ( sup_sup_set_a @ A2 @ B ) ) ).

% Un_left_absorb
thf(fact_374_Un__left__commute,axiom,
    ! [A2: set_a,B: set_a,C: set_a] :
      ( ( sup_sup_set_a @ A2 @ ( sup_sup_set_a @ B @ C ) )
      = ( sup_sup_set_a @ B @ ( sup_sup_set_a @ A2 @ C ) ) ) ).

% Un_left_commute
thf(fact_375_additive__abelian__group_Osumset__empty_H_I2_J,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,B: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( ( inf_inf_set_a @ A2 @ G )
          = bot_bot_set_a )
       => ( ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B )
          = bot_bot_set_a ) ) ) ).

% additive_abelian_group.sumset_empty'(2)
thf(fact_376_additive__abelian__group_Osumset__empty_H_I1_J,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,B: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( ( inf_inf_set_a @ A2 @ G )
          = bot_bot_set_a )
       => ( ( pluenn3038260743871226533mset_a @ G @ Addition @ B @ A2 )
          = bot_bot_set_a ) ) ) ).

% additive_abelian_group.sumset_empty'(1)
thf(fact_377_additive__abelian__group_Osumset__is__empty__iff,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,B: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B )
          = bot_bot_set_a )
        = ( ( ( inf_inf_set_a @ A2 @ G )
            = bot_bot_set_a )
          | ( ( inf_inf_set_a @ B @ G )
            = bot_bot_set_a ) ) ) ) ).

% additive_abelian_group.sumset_is_empty_iff
thf(fact_378_additive__abelian__group_Ominusset__triv,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ ( insert_a @ Zero @ bot_bot_set_a ) )
        = ( insert_a @ Zero @ bot_bot_set_a ) ) ) ).

% additive_abelian_group.minusset_triv
thf(fact_379_additive__abelian__group_Ominusset__is__empty__iff,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ A2 )
          = bot_bot_set_a )
        = ( ( inf_inf_set_a @ A2 @ G )
          = bot_bot_set_a ) ) ) ).

% additive_abelian_group.minusset_is_empty_iff
thf(fact_380_additive__abelian__group_Ominusset__eq,axiom,
    ! [G: set_nat,Addition: nat > nat > nat,Zero: nat,A2: set_nat] :
      ( ( pluenn2073725187428264546up_nat @ G @ Addition @ Zero )
     => ( ( pluenn7323955030898006884et_nat @ G @ Addition @ Zero @ A2 )
        = ( image_nat_nat @ ( group_inverse_nat @ G @ Addition @ Zero ) @ ( inf_inf_set_nat @ A2 @ G ) ) ) ) ).

% additive_abelian_group.minusset_eq
thf(fact_381_additive__abelian__group_Ominusset__eq,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( pluenn2534204936789923946sset_a @ G @ Addition @ Zero @ A2 )
        = ( image_a_a @ ( group_inverse_a @ G @ Addition @ Zero ) @ ( inf_inf_set_a @ A2 @ G ) ) ) ) ).

% additive_abelian_group.minusset_eq
thf(fact_382_additive__abelian__group_Oinfinite__sumset__aux,axiom,
    ! [G: set_nat,Addition: nat > nat > nat,Zero: nat,A2: set_nat,B: set_nat] :
      ( ( pluenn2073725187428264546up_nat @ G @ Addition @ Zero )
     => ( ~ ( finite_finite_nat @ ( inf_inf_set_nat @ A2 @ G ) )
       => ( ( ~ ( finite_finite_nat @ ( pluenn3669378163024332905et_nat @ G @ Addition @ A2 @ B ) ) )
          = ( ( inf_inf_set_nat @ B @ G )
           != bot_bot_set_nat ) ) ) ) ).

% additive_abelian_group.infinite_sumset_aux
thf(fact_383_additive__abelian__group_Oinfinite__sumset__aux,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,B: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ~ ( finite_finite_a @ ( inf_inf_set_a @ A2 @ G ) )
       => ( ( ~ ( finite_finite_a @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) ) )
          = ( ( inf_inf_set_a @ B @ G )
           != bot_bot_set_a ) ) ) ) ).

% additive_abelian_group.infinite_sumset_aux
thf(fact_384_additive__abelian__group_Oinfinite__sumset__iff,axiom,
    ! [G: set_nat,Addition: nat > nat > nat,Zero: nat,A2: set_nat,B: set_nat] :
      ( ( pluenn2073725187428264546up_nat @ G @ Addition @ Zero )
     => ( ( ~ ( finite_finite_nat @ ( pluenn3669378163024332905et_nat @ G @ Addition @ A2 @ B ) ) )
        = ( ( ~ ( finite_finite_nat @ ( inf_inf_set_nat @ A2 @ G ) )
            & ( ( inf_inf_set_nat @ B @ G )
             != bot_bot_set_nat ) )
          | ( ( ( inf_inf_set_nat @ A2 @ G )
             != bot_bot_set_nat )
            & ~ ( finite_finite_nat @ ( inf_inf_set_nat @ B @ G ) ) ) ) ) ) ).

% additive_abelian_group.infinite_sumset_iff
thf(fact_385_additive__abelian__group_Oinfinite__sumset__iff,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,B: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( ~ ( finite_finite_a @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) ) )
        = ( ( ~ ( finite_finite_a @ ( inf_inf_set_a @ A2 @ G ) )
            & ( ( inf_inf_set_a @ B @ G )
             != bot_bot_set_a ) )
          | ( ( ( inf_inf_set_a @ A2 @ G )
             != bot_bot_set_a )
            & ~ ( finite_finite_a @ ( inf_inf_set_a @ B @ G ) ) ) ) ) ) ).

% additive_abelian_group.infinite_sumset_iff
thf(fact_386_additive__abelian__group_Osumset__D_I2_J,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( pluenn3038260743871226533mset_a @ G @ Addition @ ( insert_a @ Zero @ bot_bot_set_a ) @ A2 )
        = ( inf_inf_set_a @ A2 @ G ) ) ) ).

% additive_abelian_group.sumset_D(2)
thf(fact_387_additive__abelian__group_Osumset__D_I1_J,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ ( insert_a @ Zero @ bot_bot_set_a ) )
        = ( inf_inf_set_a @ A2 @ G ) ) ) ).

% additive_abelian_group.sumset_D(1)
thf(fact_388_additive__abelian__group_Ocard__sumset__0__iff,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,B: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( ord_less_eq_set_a @ A2 @ G )
       => ( ( ord_less_eq_set_a @ B @ G )
         => ( ( ( finite_card_a @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) )
              = zero_zero_nat )
            = ( ( ( finite_card_a @ A2 )
                = zero_zero_nat )
              | ( ( finite_card_a @ B )
                = zero_zero_nat ) ) ) ) ) ) ).

% additive_abelian_group.card_sumset_0_iff
thf(fact_389_additive__abelian__group_Ocard__sumset__0__iff_H,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,B: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( ( finite_card_a @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) )
          = zero_zero_nat )
        = ( ( ( finite_card_a @ ( inf_inf_set_a @ A2 @ G ) )
            = zero_zero_nat )
          | ( ( finite_card_a @ ( inf_inf_set_a @ B @ G ) )
            = zero_zero_nat ) ) ) ) ).

% additive_abelian_group.card_sumset_0_iff'
thf(fact_390_additive__abelian__group_Ocard__le__sumset,axiom,
    ! [G: set_nat,Addition: nat > nat > nat,Zero: nat,A2: set_nat,A: nat,B: set_nat] :
      ( ( pluenn2073725187428264546up_nat @ G @ Addition @ Zero )
     => ( ( finite_finite_nat @ A2 )
       => ( ( member_nat @ A @ A2 )
         => ( ( member_nat @ A @ G )
           => ( ( finite_finite_nat @ B )
             => ( ( ord_less_eq_set_nat @ B @ G )
               => ( ord_less_eq_nat @ ( finite_card_nat @ B ) @ ( finite_card_nat @ ( pluenn3669378163024332905et_nat @ G @ Addition @ A2 @ B ) ) ) ) ) ) ) ) ) ).

% additive_abelian_group.card_le_sumset
thf(fact_391_additive__abelian__group_Ocard__le__sumset,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,A: a,B: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( finite_finite_a @ A2 )
       => ( ( member_a @ A @ A2 )
         => ( ( member_a @ A @ G )
           => ( ( finite_finite_a @ B )
             => ( ( ord_less_eq_set_a @ B @ G )
               => ( ord_less_eq_nat @ ( finite_card_a @ B ) @ ( finite_card_a @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) ) ) ) ) ) ) ) ) ).

% additive_abelian_group.card_le_sumset
thf(fact_392_insert__mono,axiom,
    ! [C: set_a,D2: set_a,A: a] :
      ( ( ord_less_eq_set_a @ C @ D2 )
     => ( ord_less_eq_set_a @ ( insert_a @ A @ C ) @ ( insert_a @ A @ D2 ) ) ) ).

% insert_mono
thf(fact_393_subset__insert,axiom,
    ! [X: nat,A2: set_nat,B: set_nat] :
      ( ~ ( member_nat @ X @ A2 )
     => ( ( ord_less_eq_set_nat @ A2 @ ( insert_nat @ X @ B ) )
        = ( ord_less_eq_set_nat @ A2 @ B ) ) ) ).

% subset_insert
thf(fact_394_subset__insert,axiom,
    ! [X: a,A2: set_a,B: set_a] :
      ( ~ ( member_a @ X @ A2 )
     => ( ( ord_less_eq_set_a @ A2 @ ( insert_a @ X @ B ) )
        = ( ord_less_eq_set_a @ A2 @ B ) ) ) ).

% subset_insert
thf(fact_395_subset__insertI,axiom,
    ! [B: set_a,A: a] : ( ord_less_eq_set_a @ B @ ( insert_a @ A @ B ) ) ).

% subset_insertI
thf(fact_396_subset__insertI2,axiom,
    ! [A2: set_a,B: set_a,B4: a] :
      ( ( ord_less_eq_set_a @ A2 @ B )
     => ( ord_less_eq_set_a @ A2 @ ( insert_a @ B4 @ B ) ) ) ).

% subset_insertI2
thf(fact_397_Int__mono,axiom,
    ! [A2: set_a,C: set_a,B: set_a,D2: set_a] :
      ( ( ord_less_eq_set_a @ A2 @ C )
     => ( ( ord_less_eq_set_a @ B @ D2 )
       => ( ord_less_eq_set_a @ ( inf_inf_set_a @ A2 @ B ) @ ( inf_inf_set_a @ C @ D2 ) ) ) ) ).

% Int_mono
thf(fact_398_Int__lower1,axiom,
    ! [A2: set_a,B: set_a] : ( ord_less_eq_set_a @ ( inf_inf_set_a @ A2 @ B ) @ A2 ) ).

% Int_lower1
thf(fact_399_Int__lower2,axiom,
    ! [A2: set_a,B: set_a] : ( ord_less_eq_set_a @ ( inf_inf_set_a @ A2 @ B ) @ B ) ).

% Int_lower2
thf(fact_400_Int__absorb1,axiom,
    ! [B: set_a,A2: set_a] :
      ( ( ord_less_eq_set_a @ B @ A2 )
     => ( ( inf_inf_set_a @ A2 @ B )
        = B ) ) ).

% Int_absorb1
thf(fact_401_Int__absorb2,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( ord_less_eq_set_a @ A2 @ B )
     => ( ( inf_inf_set_a @ A2 @ B )
        = A2 ) ) ).

% Int_absorb2
thf(fact_402_Int__greatest,axiom,
    ! [C: set_a,A2: set_a,B: set_a] :
      ( ( ord_less_eq_set_a @ C @ A2 )
     => ( ( ord_less_eq_set_a @ C @ B )
       => ( ord_less_eq_set_a @ C @ ( inf_inf_set_a @ A2 @ B ) ) ) ) ).

% Int_greatest
thf(fact_403_Int__Collect__mono,axiom,
    ! [A2: set_nat,B: set_nat,P: nat > $o,Q: nat > $o] :
      ( ( ord_less_eq_set_nat @ A2 @ B )
     => ( ! [X3: nat] :
            ( ( member_nat @ X3 @ A2 )
           => ( ( P @ X3 )
             => ( Q @ X3 ) ) )
       => ( ord_less_eq_set_nat @ ( inf_inf_set_nat @ A2 @ ( collect_nat @ P ) ) @ ( inf_inf_set_nat @ B @ ( collect_nat @ Q ) ) ) ) ) ).

% Int_Collect_mono
thf(fact_404_Int__Collect__mono,axiom,
    ! [A2: set_a,B: set_a,P: a > $o,Q: a > $o] :
      ( ( ord_less_eq_set_a @ A2 @ B )
     => ( ! [X3: a] :
            ( ( member_a @ X3 @ A2 )
           => ( ( P @ X3 )
             => ( Q @ X3 ) ) )
       => ( ord_less_eq_set_a @ ( inf_inf_set_a @ A2 @ ( collect_a @ P ) ) @ ( inf_inf_set_a @ B @ ( collect_a @ Q ) ) ) ) ) ).

% Int_Collect_mono
thf(fact_405_Int__insert__left,axiom,
    ! [A: nat,C: set_nat,B: set_nat] :
      ( ( ( member_nat @ A @ C )
       => ( ( inf_inf_set_nat @ ( insert_nat @ A @ B ) @ C )
          = ( insert_nat @ A @ ( inf_inf_set_nat @ B @ C ) ) ) )
      & ( ~ ( member_nat @ A @ C )
       => ( ( inf_inf_set_nat @ ( insert_nat @ A @ B ) @ C )
          = ( inf_inf_set_nat @ B @ C ) ) ) ) ).

% Int_insert_left
thf(fact_406_Int__insert__left,axiom,
    ! [A: a,C: set_a,B: set_a] :
      ( ( ( member_a @ A @ C )
       => ( ( inf_inf_set_a @ ( insert_a @ A @ B ) @ C )
          = ( insert_a @ A @ ( inf_inf_set_a @ B @ C ) ) ) )
      & ( ~ ( member_a @ A @ C )
       => ( ( inf_inf_set_a @ ( insert_a @ A @ B ) @ C )
          = ( inf_inf_set_a @ B @ C ) ) ) ) ).

% Int_insert_left
thf(fact_407_Int__insert__right,axiom,
    ! [A: nat,A2: set_nat,B: set_nat] :
      ( ( ( member_nat @ A @ A2 )
       => ( ( inf_inf_set_nat @ A2 @ ( insert_nat @ A @ B ) )
          = ( insert_nat @ A @ ( inf_inf_set_nat @ A2 @ B ) ) ) )
      & ( ~ ( member_nat @ A @ A2 )
       => ( ( inf_inf_set_nat @ A2 @ ( insert_nat @ A @ B ) )
          = ( inf_inf_set_nat @ A2 @ B ) ) ) ) ).

% Int_insert_right
thf(fact_408_Int__insert__right,axiom,
    ! [A: a,A2: set_a,B: set_a] :
      ( ( ( member_a @ A @ A2 )
       => ( ( inf_inf_set_a @ A2 @ ( insert_a @ A @ B ) )
          = ( insert_a @ A @ ( inf_inf_set_a @ A2 @ B ) ) ) )
      & ( ~ ( member_a @ A @ A2 )
       => ( ( inf_inf_set_a @ A2 @ ( insert_a @ A @ B ) )
          = ( inf_inf_set_a @ A2 @ B ) ) ) ) ).

% Int_insert_right
thf(fact_409_Un__mono,axiom,
    ! [A2: set_a,C: set_a,B: set_a,D2: set_a] :
      ( ( ord_less_eq_set_a @ A2 @ C )
     => ( ( ord_less_eq_set_a @ B @ D2 )
       => ( ord_less_eq_set_a @ ( sup_sup_set_a @ A2 @ B ) @ ( sup_sup_set_a @ C @ D2 ) ) ) ) ).

% Un_mono
thf(fact_410_Un__least,axiom,
    ! [A2: set_a,C: set_a,B: set_a] :
      ( ( ord_less_eq_set_a @ A2 @ C )
     => ( ( ord_less_eq_set_a @ B @ C )
       => ( ord_less_eq_set_a @ ( sup_sup_set_a @ A2 @ B ) @ C ) ) ) ).

% Un_least
thf(fact_411_Un__upper1,axiom,
    ! [A2: set_a,B: set_a] : ( ord_less_eq_set_a @ A2 @ ( sup_sup_set_a @ A2 @ B ) ) ).

% Un_upper1
thf(fact_412_Un__upper2,axiom,
    ! [B: set_a,A2: set_a] : ( ord_less_eq_set_a @ B @ ( sup_sup_set_a @ A2 @ B ) ) ).

% Un_upper2
thf(fact_413_Un__absorb1,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( ord_less_eq_set_a @ A2 @ B )
     => ( ( sup_sup_set_a @ A2 @ B )
        = B ) ) ).

% Un_absorb1
thf(fact_414_Un__absorb2,axiom,
    ! [B: set_a,A2: set_a] :
      ( ( ord_less_eq_set_a @ B @ A2 )
     => ( ( sup_sup_set_a @ A2 @ B )
        = A2 ) ) ).

% Un_absorb2
thf(fact_415_subset__UnE,axiom,
    ! [C: set_a,A2: set_a,B: set_a] :
      ( ( ord_less_eq_set_a @ C @ ( sup_sup_set_a @ A2 @ B ) )
     => ~ ! [A7: set_a] :
            ( ( ord_less_eq_set_a @ A7 @ A2 )
           => ! [B8: set_a] :
                ( ( ord_less_eq_set_a @ B8 @ B )
               => ( C
                 != ( sup_sup_set_a @ A7 @ B8 ) ) ) ) ) ).

% subset_UnE
thf(fact_416_subset__Un__eq,axiom,
    ( ord_less_eq_set_a
    = ( ^ [A6: set_a,B6: set_a] :
          ( ( sup_sup_set_a @ A6 @ B6 )
          = B6 ) ) ) ).

% subset_Un_eq
thf(fact_417_Un__Int__crazy,axiom,
    ! [A2: set_a,B: set_a,C: set_a] :
      ( ( sup_sup_set_a @ ( sup_sup_set_a @ ( inf_inf_set_a @ A2 @ B ) @ ( inf_inf_set_a @ B @ C ) ) @ ( inf_inf_set_a @ C @ A2 ) )
      = ( inf_inf_set_a @ ( inf_inf_set_a @ ( sup_sup_set_a @ A2 @ B ) @ ( sup_sup_set_a @ B @ C ) ) @ ( sup_sup_set_a @ C @ A2 ) ) ) ).

% Un_Int_crazy
thf(fact_418_Int__Un__distrib,axiom,
    ! [A2: set_a,B: set_a,C: set_a] :
      ( ( inf_inf_set_a @ A2 @ ( sup_sup_set_a @ B @ C ) )
      = ( sup_sup_set_a @ ( inf_inf_set_a @ A2 @ B ) @ ( inf_inf_set_a @ A2 @ C ) ) ) ).

% Int_Un_distrib
thf(fact_419_Un__Int__distrib,axiom,
    ! [A2: set_a,B: set_a,C: set_a] :
      ( ( sup_sup_set_a @ A2 @ ( inf_inf_set_a @ B @ C ) )
      = ( inf_inf_set_a @ ( sup_sup_set_a @ A2 @ B ) @ ( sup_sup_set_a @ A2 @ C ) ) ) ).

% Un_Int_distrib
thf(fact_420_Int__Un__distrib2,axiom,
    ! [B: set_a,C: set_a,A2: set_a] :
      ( ( inf_inf_set_a @ ( sup_sup_set_a @ B @ C ) @ A2 )
      = ( sup_sup_set_a @ ( inf_inf_set_a @ B @ A2 ) @ ( inf_inf_set_a @ C @ A2 ) ) ) ).

% Int_Un_distrib2
thf(fact_421_Un__Int__distrib2,axiom,
    ! [B: set_a,C: set_a,A2: set_a] :
      ( ( sup_sup_set_a @ ( inf_inf_set_a @ B @ C ) @ A2 )
      = ( inf_inf_set_a @ ( sup_sup_set_a @ B @ A2 ) @ ( sup_sup_set_a @ C @ A2 ) ) ) ).

% Un_Int_distrib2
thf(fact_422_Un__Int__assoc__eq,axiom,
    ! [A2: set_a,B: set_a,C: set_a] :
      ( ( ( sup_sup_set_a @ ( inf_inf_set_a @ A2 @ B ) @ C )
        = ( inf_inf_set_a @ A2 @ ( sup_sup_set_a @ B @ C ) ) )
      = ( ord_less_eq_set_a @ C @ A2 ) ) ).

% Un_Int_assoc_eq
thf(fact_423_sumset__insert2,axiom,
    ! [B: set_a,A2: set_a,X: a] :
      ( ( nO_MATCH_set_a_set_a @ bot_bot_set_a @ B )
     => ( ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ ( insert_a @ X @ B ) )
        = ( sup_sup_set_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ ( insert_a @ X @ bot_bot_set_a ) ) @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) ) ) ) ).

% sumset_insert2
thf(fact_424_sumset__insert1,axiom,
    ! [A2: set_a,X: a,B: set_a] :
      ( ( nO_MATCH_set_a_set_a @ bot_bot_set_a @ A2 )
     => ( ( pluenn3038260743871226533mset_a @ g @ addition @ ( insert_a @ X @ A2 ) @ B )
        = ( sup_sup_set_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ ( insert_a @ X @ bot_bot_set_a ) @ B ) @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ B ) ) ) ) ).

% sumset_insert1
thf(fact_425_card__0__eq,axiom,
    ! [A2: set_nat] :
      ( ( finite_finite_nat @ A2 )
     => ( ( ( finite_card_nat @ A2 )
          = zero_zero_nat )
        = ( A2 = bot_bot_set_nat ) ) ) ).

% card_0_eq
thf(fact_426_card__0__eq,axiom,
    ! [A2: set_a] :
      ( ( finite_finite_a @ A2 )
     => ( ( ( finite_card_a @ A2 )
          = zero_zero_nat )
        = ( A2 = bot_bot_set_a ) ) ) ).

% card_0_eq
thf(fact_427_card_Oinfinite,axiom,
    ! [A2: set_a] :
      ( ~ ( finite_finite_a @ A2 )
     => ( ( finite_card_a @ A2 )
        = zero_zero_nat ) ) ).

% card.infinite
thf(fact_428_card_Oinfinite,axiom,
    ! [A2: set_nat] :
      ( ~ ( finite_finite_nat @ A2 )
     => ( ( finite_card_nat @ A2 )
        = zero_zero_nat ) ) ).

% card.infinite
thf(fact_429_card_Oempty,axiom,
    ( ( finite_card_a @ bot_bot_set_a )
    = zero_zero_nat ) ).

% card.empty
thf(fact_430_group_Oinverse__subgroupD,axiom,
    ! [G: set_nat,Composition: nat > nat > nat,Unit: nat,H2: set_nat] :
      ( ( group_group_nat @ G @ Composition @ Unit )
     => ( ( group_subgroup_nat @ ( image_nat_nat @ ( group_inverse_nat @ G @ Composition @ Unit ) @ H2 ) @ G @ Composition @ Unit )
       => ( ( ord_less_eq_set_nat @ H2 @ ( group_Units_nat @ G @ Composition @ Unit ) )
         => ( group_subgroup_nat @ H2 @ G @ Composition @ Unit ) ) ) ) ).

% group.inverse_subgroupD
thf(fact_431_group_Oinverse__subgroupD,axiom,
    ! [G: set_a,Composition: a > a > a,Unit: a,H2: set_a] :
      ( ( group_group_a @ G @ Composition @ Unit )
     => ( ( group_subgroup_a @ ( image_a_a @ ( group_inverse_a @ G @ Composition @ Unit ) @ H2 ) @ G @ Composition @ Unit )
       => ( ( ord_less_eq_set_a @ H2 @ ( group_Units_a @ G @ Composition @ Unit ) )
         => ( group_subgroup_a @ H2 @ G @ Composition @ Unit ) ) ) ) ).

% group.inverse_subgroupD
thf(fact_432_sumset__iterated__empty,axiom,
    ! [R: nat] :
      ( ( ord_less_nat @ zero_zero_nat @ R )
     => ( ( pluenn1960970773371692859ated_a @ g @ addition @ zero @ bot_bot_set_a @ R )
        = bot_bot_set_a ) ) ).

% sumset_iterated_empty
thf(fact_433_sumsetdiff__sing,axiom,
    ! [A2: set_a,B: set_a,X: a] :
      ( ( pluenn3038260743871226533mset_a @ g @ addition @ ( minus_minus_set_a @ A2 @ B ) @ ( insert_a @ X @ bot_bot_set_a ) )
      = ( minus_minus_set_a @ ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ ( insert_a @ X @ bot_bot_set_a ) ) @ ( pluenn3038260743871226533mset_a @ g @ addition @ B @ ( insert_a @ X @ bot_bot_set_a ) ) ) ) ).

% sumsetdiff_sing
thf(fact_434_finite__Un,axiom,
    ! [F2: set_nat,G: set_nat] :
      ( ( finite_finite_nat @ ( sup_sup_set_nat @ F2 @ G ) )
      = ( ( finite_finite_nat @ F2 )
        & ( finite_finite_nat @ G ) ) ) ).

% finite_Un
thf(fact_435_finite__Un,axiom,
    ! [F2: set_a,G: set_a] :
      ( ( finite_finite_a @ ( sup_sup_set_a @ F2 @ G ) )
      = ( ( finite_finite_a @ F2 )
        & ( finite_finite_a @ G ) ) ) ).

% finite_Un
thf(fact_436_DiffI,axiom,
    ! [C2: nat,A2: set_nat,B: set_nat] :
      ( ( member_nat @ C2 @ A2 )
     => ( ~ ( member_nat @ C2 @ B )
       => ( member_nat @ C2 @ ( minus_minus_set_nat @ A2 @ B ) ) ) ) ).

% DiffI
thf(fact_437_DiffI,axiom,
    ! [C2: a,A2: set_a,B: set_a] :
      ( ( member_a @ C2 @ A2 )
     => ( ~ ( member_a @ C2 @ B )
       => ( member_a @ C2 @ ( minus_minus_set_a @ A2 @ B ) ) ) ) ).

% DiffI
thf(fact_438_Diff__iff,axiom,
    ! [C2: nat,A2: set_nat,B: set_nat] :
      ( ( member_nat @ C2 @ ( minus_minus_set_nat @ A2 @ B ) )
      = ( ( member_nat @ C2 @ A2 )
        & ~ ( member_nat @ C2 @ B ) ) ) ).

% Diff_iff
thf(fact_439_Diff__iff,axiom,
    ! [C2: a,A2: set_a,B: set_a] :
      ( ( member_a @ C2 @ ( minus_minus_set_a @ A2 @ B ) )
      = ( ( member_a @ C2 @ A2 )
        & ~ ( member_a @ C2 @ B ) ) ) ).

% Diff_iff
thf(fact_440_Diff__idemp,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( minus_minus_set_a @ ( minus_minus_set_a @ A2 @ B ) @ B )
      = ( minus_minus_set_a @ A2 @ B ) ) ).

% Diff_idemp
thf(fact_441_finite__imageI,axiom,
    ! [F2: set_a,H3: a > a] :
      ( ( finite_finite_a @ F2 )
     => ( finite_finite_a @ ( image_a_a @ H3 @ F2 ) ) ) ).

% finite_imageI
thf(fact_442_finite__imageI,axiom,
    ! [F2: set_a,H3: a > nat] :
      ( ( finite_finite_a @ F2 )
     => ( finite_finite_nat @ ( image_a_nat @ H3 @ F2 ) ) ) ).

% finite_imageI
thf(fact_443_finite__imageI,axiom,
    ! [F2: set_nat,H3: nat > a] :
      ( ( finite_finite_nat @ F2 )
     => ( finite_finite_a @ ( image_nat_a @ H3 @ F2 ) ) ) ).

% finite_imageI
thf(fact_444_finite__imageI,axiom,
    ! [F2: set_nat,H3: nat > nat] :
      ( ( finite_finite_nat @ F2 )
     => ( finite_finite_nat @ ( image_nat_nat @ H3 @ F2 ) ) ) ).

% finite_imageI
thf(fact_445_finite__insert,axiom,
    ! [A: a,A2: set_a] :
      ( ( finite_finite_a @ ( insert_a @ A @ A2 ) )
      = ( finite_finite_a @ A2 ) ) ).

% finite_insert
thf(fact_446_finite__insert,axiom,
    ! [A: nat,A2: set_nat] :
      ( ( finite_finite_nat @ ( insert_nat @ A @ A2 ) )
      = ( finite_finite_nat @ A2 ) ) ).

% finite_insert
thf(fact_447_finite__Int,axiom,
    ! [F2: set_nat,G: set_nat] :
      ( ( ( finite_finite_nat @ F2 )
        | ( finite_finite_nat @ G ) )
     => ( finite_finite_nat @ ( inf_inf_set_nat @ F2 @ G ) ) ) ).

% finite_Int
thf(fact_448_finite__Int,axiom,
    ! [F2: set_a,G: set_a] :
      ( ( ( finite_finite_a @ F2 )
        | ( finite_finite_a @ G ) )
     => ( finite_finite_a @ ( inf_inf_set_a @ F2 @ G ) ) ) ).

% finite_Int
thf(fact_449_Diff__cancel,axiom,
    ! [A2: set_a] :
      ( ( minus_minus_set_a @ A2 @ A2 )
      = bot_bot_set_a ) ).

% Diff_cancel
thf(fact_450_empty__Diff,axiom,
    ! [A2: set_a] :
      ( ( minus_minus_set_a @ bot_bot_set_a @ A2 )
      = bot_bot_set_a ) ).

% empty_Diff
thf(fact_451_Diff__empty,axiom,
    ! [A2: set_a] :
      ( ( minus_minus_set_a @ A2 @ bot_bot_set_a )
      = A2 ) ).

% Diff_empty
thf(fact_452_finite__Diff2,axiom,
    ! [B: set_nat,A2: set_nat] :
      ( ( finite_finite_nat @ B )
     => ( ( finite_finite_nat @ ( minus_minus_set_nat @ A2 @ B ) )
        = ( finite_finite_nat @ A2 ) ) ) ).

% finite_Diff2
thf(fact_453_finite__Diff2,axiom,
    ! [B: set_a,A2: set_a] :
      ( ( finite_finite_a @ B )
     => ( ( finite_finite_a @ ( minus_minus_set_a @ A2 @ B ) )
        = ( finite_finite_a @ A2 ) ) ) ).

% finite_Diff2
thf(fact_454_finite__Diff,axiom,
    ! [A2: set_nat,B: set_nat] :
      ( ( finite_finite_nat @ A2 )
     => ( finite_finite_nat @ ( minus_minus_set_nat @ A2 @ B ) ) ) ).

% finite_Diff
thf(fact_455_finite__Diff,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( finite_finite_a @ A2 )
     => ( finite_finite_a @ ( minus_minus_set_a @ A2 @ B ) ) ) ).

% finite_Diff
thf(fact_456_insert__Diff1,axiom,
    ! [X: nat,B: set_nat,A2: set_nat] :
      ( ( member_nat @ X @ B )
     => ( ( minus_minus_set_nat @ ( insert_nat @ X @ A2 ) @ B )
        = ( minus_minus_set_nat @ A2 @ B ) ) ) ).

% insert_Diff1
thf(fact_457_insert__Diff1,axiom,
    ! [X: a,B: set_a,A2: set_a] :
      ( ( member_a @ X @ B )
     => ( ( minus_minus_set_a @ ( insert_a @ X @ A2 ) @ B )
        = ( minus_minus_set_a @ A2 @ B ) ) ) ).

% insert_Diff1
thf(fact_458_Diff__insert0,axiom,
    ! [X: nat,A2: set_nat,B: set_nat] :
      ( ~ ( member_nat @ X @ A2 )
     => ( ( minus_minus_set_nat @ A2 @ ( insert_nat @ X @ B ) )
        = ( minus_minus_set_nat @ A2 @ B ) ) ) ).

% Diff_insert0
thf(fact_459_Diff__insert0,axiom,
    ! [X: a,A2: set_a,B: set_a] :
      ( ~ ( member_a @ X @ A2 )
     => ( ( minus_minus_set_a @ A2 @ ( insert_a @ X @ B ) )
        = ( minus_minus_set_a @ A2 @ B ) ) ) ).

% Diff_insert0
thf(fact_460_Un__Diff__cancel2,axiom,
    ! [B: set_a,A2: set_a] :
      ( ( sup_sup_set_a @ ( minus_minus_set_a @ B @ A2 ) @ A2 )
      = ( sup_sup_set_a @ B @ A2 ) ) ).

% Un_Diff_cancel2
thf(fact_461_Un__Diff__cancel,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( sup_sup_set_a @ A2 @ ( minus_minus_set_a @ B @ A2 ) )
      = ( sup_sup_set_a @ A2 @ B ) ) ).

% Un_Diff_cancel
thf(fact_462_Diff__eq__empty__iff,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( ( minus_minus_set_a @ A2 @ B )
        = bot_bot_set_a )
      = ( ord_less_eq_set_a @ A2 @ B ) ) ).

% Diff_eq_empty_iff
thf(fact_463_insert__Diff__single,axiom,
    ! [A: a,A2: set_a] :
      ( ( insert_a @ A @ ( minus_minus_set_a @ A2 @ ( insert_a @ A @ bot_bot_set_a ) ) )
      = ( insert_a @ A @ A2 ) ) ).

% insert_Diff_single
thf(fact_464_finite__Diff__insert,axiom,
    ! [A2: set_nat,A: nat,B: set_nat] :
      ( ( finite_finite_nat @ ( minus_minus_set_nat @ A2 @ ( insert_nat @ A @ B ) ) )
      = ( finite_finite_nat @ ( minus_minus_set_nat @ A2 @ B ) ) ) ).

% finite_Diff_insert
thf(fact_465_finite__Diff__insert,axiom,
    ! [A2: set_a,A: a,B: set_a] :
      ( ( finite_finite_a @ ( minus_minus_set_a @ A2 @ ( insert_a @ A @ B ) ) )
      = ( finite_finite_a @ ( minus_minus_set_a @ A2 @ B ) ) ) ).

% finite_Diff_insert
thf(fact_466_Diff__disjoint,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( inf_inf_set_a @ A2 @ ( minus_minus_set_a @ B @ A2 ) )
      = bot_bot_set_a ) ).

% Diff_disjoint
thf(fact_467_DiffE,axiom,
    ! [C2: nat,A2: set_nat,B: set_nat] :
      ( ( member_nat @ C2 @ ( minus_minus_set_nat @ A2 @ B ) )
     => ~ ( ( member_nat @ C2 @ A2 )
         => ( member_nat @ C2 @ B ) ) ) ).

% DiffE
thf(fact_468_DiffE,axiom,
    ! [C2: a,A2: set_a,B: set_a] :
      ( ( member_a @ C2 @ ( minus_minus_set_a @ A2 @ B ) )
     => ~ ( ( member_a @ C2 @ A2 )
         => ( member_a @ C2 @ B ) ) ) ).

% DiffE
thf(fact_469_DiffD1,axiom,
    ! [C2: nat,A2: set_nat,B: set_nat] :
      ( ( member_nat @ C2 @ ( minus_minus_set_nat @ A2 @ B ) )
     => ( member_nat @ C2 @ A2 ) ) ).

% DiffD1
thf(fact_470_DiffD1,axiom,
    ! [C2: a,A2: set_a,B: set_a] :
      ( ( member_a @ C2 @ ( minus_minus_set_a @ A2 @ B ) )
     => ( member_a @ C2 @ A2 ) ) ).

% DiffD1
thf(fact_471_DiffD2,axiom,
    ! [C2: nat,A2: set_nat,B: set_nat] :
      ( ( member_nat @ C2 @ ( minus_minus_set_nat @ A2 @ B ) )
     => ~ ( member_nat @ C2 @ B ) ) ).

% DiffD2
thf(fact_472_DiffD2,axiom,
    ! [C2: a,A2: set_a,B: set_a] :
      ( ( member_a @ C2 @ ( minus_minus_set_a @ A2 @ B ) )
     => ~ ( member_a @ C2 @ B ) ) ).

% DiffD2
thf(fact_473_Diff__infinite__finite,axiom,
    ! [T: set_nat,S: set_nat] :
      ( ( finite_finite_nat @ T )
     => ( ~ ( finite_finite_nat @ S )
       => ~ ( finite_finite_nat @ ( minus_minus_set_nat @ S @ T ) ) ) ) ).

% Diff_infinite_finite
thf(fact_474_Diff__infinite__finite,axiom,
    ! [T: set_a,S: set_a] :
      ( ( finite_finite_a @ T )
     => ( ~ ( finite_finite_a @ S )
       => ~ ( finite_finite_a @ ( minus_minus_set_a @ S @ T ) ) ) ) ).

% Diff_infinite_finite
thf(fact_475_card__less__sym__Diff,axiom,
    ! [A2: set_nat,B: set_nat] :
      ( ( finite_finite_nat @ A2 )
     => ( ( finite_finite_nat @ B )
       => ( ( ord_less_nat @ ( finite_card_nat @ A2 ) @ ( finite_card_nat @ B ) )
         => ( ord_less_nat @ ( finite_card_nat @ ( minus_minus_set_nat @ A2 @ B ) ) @ ( finite_card_nat @ ( minus_minus_set_nat @ B @ A2 ) ) ) ) ) ) ).

% card_less_sym_Diff
thf(fact_476_card__less__sym__Diff,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( finite_finite_a @ A2 )
     => ( ( finite_finite_a @ B )
       => ( ( ord_less_nat @ ( finite_card_a @ A2 ) @ ( finite_card_a @ B ) )
         => ( ord_less_nat @ ( finite_card_a @ ( minus_minus_set_a @ A2 @ B ) ) @ ( finite_card_a @ ( minus_minus_set_a @ B @ A2 ) ) ) ) ) ) ).

% card_less_sym_Diff
thf(fact_477_in__image__insert__iff,axiom,
    ! [B: set_set_nat,X: nat,A2: set_nat] :
      ( ! [C3: set_nat] :
          ( ( member_set_nat @ C3 @ B )
         => ~ ( member_nat @ X @ C3 ) )
     => ( ( member_set_nat @ A2 @ ( image_7916887816326733075et_nat @ ( insert_nat @ X ) @ B ) )
        = ( ( member_nat @ X @ A2 )
          & ( member_set_nat @ ( minus_minus_set_nat @ A2 @ ( insert_nat @ X @ bot_bot_set_nat ) ) @ B ) ) ) ) ).

% in_image_insert_iff
thf(fact_478_in__image__insert__iff,axiom,
    ! [B: set_set_a,X: a,A2: set_a] :
      ( ! [C3: set_a] :
          ( ( member_set_a @ C3 @ B )
         => ~ ( member_a @ X @ C3 ) )
     => ( ( member_set_a @ A2 @ ( image_set_a_set_a @ ( insert_a @ X ) @ B ) )
        = ( ( member_a @ X @ A2 )
          & ( member_set_a @ ( minus_minus_set_a @ A2 @ ( insert_a @ X @ bot_bot_set_a ) ) @ B ) ) ) ) ).

% in_image_insert_iff
thf(fact_479_double__diff,axiom,
    ! [A2: set_a,B: set_a,C: set_a] :
      ( ( ord_less_eq_set_a @ A2 @ B )
     => ( ( ord_less_eq_set_a @ B @ C )
       => ( ( minus_minus_set_a @ B @ ( minus_minus_set_a @ C @ A2 ) )
          = A2 ) ) ) ).

% double_diff
thf(fact_480_Diff__subset,axiom,
    ! [A2: set_a,B: set_a] : ( ord_less_eq_set_a @ ( minus_minus_set_a @ A2 @ B ) @ A2 ) ).

% Diff_subset
thf(fact_481_Diff__mono,axiom,
    ! [A2: set_a,C: set_a,D2: set_a,B: set_a] :
      ( ( ord_less_eq_set_a @ A2 @ C )
     => ( ( ord_less_eq_set_a @ D2 @ B )
       => ( ord_less_eq_set_a @ ( minus_minus_set_a @ A2 @ B ) @ ( minus_minus_set_a @ C @ D2 ) ) ) ) ).

% Diff_mono
thf(fact_482_insert__Diff__if,axiom,
    ! [X: nat,B: set_nat,A2: set_nat] :
      ( ( ( member_nat @ X @ B )
       => ( ( minus_minus_set_nat @ ( insert_nat @ X @ A2 ) @ B )
          = ( minus_minus_set_nat @ A2 @ B ) ) )
      & ( ~ ( member_nat @ X @ B )
       => ( ( minus_minus_set_nat @ ( insert_nat @ X @ A2 ) @ B )
          = ( insert_nat @ X @ ( minus_minus_set_nat @ A2 @ B ) ) ) ) ) ).

% insert_Diff_if
thf(fact_483_insert__Diff__if,axiom,
    ! [X: a,B: set_a,A2: set_a] :
      ( ( ( member_a @ X @ B )
       => ( ( minus_minus_set_a @ ( insert_a @ X @ A2 ) @ B )
          = ( minus_minus_set_a @ A2 @ B ) ) )
      & ( ~ ( member_a @ X @ B )
       => ( ( minus_minus_set_a @ ( insert_a @ X @ A2 ) @ B )
          = ( insert_a @ X @ ( minus_minus_set_a @ A2 @ B ) ) ) ) ) ).

% insert_Diff_if
thf(fact_484_Diff__Int__distrib2,axiom,
    ! [A2: set_a,B: set_a,C: set_a] :
      ( ( inf_inf_set_a @ ( minus_minus_set_a @ A2 @ B ) @ C )
      = ( minus_minus_set_a @ ( inf_inf_set_a @ A2 @ C ) @ ( inf_inf_set_a @ B @ C ) ) ) ).

% Diff_Int_distrib2
thf(fact_485_Diff__Int__distrib,axiom,
    ! [C: set_a,A2: set_a,B: set_a] :
      ( ( inf_inf_set_a @ C @ ( minus_minus_set_a @ A2 @ B ) )
      = ( minus_minus_set_a @ ( inf_inf_set_a @ C @ A2 ) @ ( inf_inf_set_a @ C @ B ) ) ) ).

% Diff_Int_distrib
thf(fact_486_Diff__Diff__Int,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( minus_minus_set_a @ A2 @ ( minus_minus_set_a @ A2 @ B ) )
      = ( inf_inf_set_a @ A2 @ B ) ) ).

% Diff_Diff_Int
thf(fact_487_Diff__Int2,axiom,
    ! [A2: set_a,C: set_a,B: set_a] :
      ( ( minus_minus_set_a @ ( inf_inf_set_a @ A2 @ C ) @ ( inf_inf_set_a @ B @ C ) )
      = ( minus_minus_set_a @ ( inf_inf_set_a @ A2 @ C ) @ B ) ) ).

% Diff_Int2
thf(fact_488_Int__Diff,axiom,
    ! [A2: set_a,B: set_a,C: set_a] :
      ( ( minus_minus_set_a @ ( inf_inf_set_a @ A2 @ B ) @ C )
      = ( inf_inf_set_a @ A2 @ ( minus_minus_set_a @ B @ C ) ) ) ).

% Int_Diff
thf(fact_489_Un__Diff,axiom,
    ! [A2: set_a,B: set_a,C: set_a] :
      ( ( minus_minus_set_a @ ( sup_sup_set_a @ A2 @ B ) @ C )
      = ( sup_sup_set_a @ ( minus_minus_set_a @ A2 @ C ) @ ( minus_minus_set_a @ B @ C ) ) ) ).

% Un_Diff
thf(fact_490_card__Diff1__less,axiom,
    ! [A2: set_nat,X: nat] :
      ( ( finite_finite_nat @ A2 )
     => ( ( member_nat @ X @ A2 )
       => ( ord_less_nat @ ( finite_card_nat @ ( minus_minus_set_nat @ A2 @ ( insert_nat @ X @ bot_bot_set_nat ) ) ) @ ( finite_card_nat @ A2 ) ) ) ) ).

% card_Diff1_less
thf(fact_491_card__Diff1__less,axiom,
    ! [A2: set_a,X: a] :
      ( ( finite_finite_a @ A2 )
     => ( ( member_a @ X @ A2 )
       => ( ord_less_nat @ ( finite_card_a @ ( minus_minus_set_a @ A2 @ ( insert_a @ X @ bot_bot_set_a ) ) ) @ ( finite_card_a @ A2 ) ) ) ) ).

% card_Diff1_less
thf(fact_492_card__Diff2__less,axiom,
    ! [A2: set_nat,X: nat,Y: nat] :
      ( ( finite_finite_nat @ A2 )
     => ( ( member_nat @ X @ A2 )
       => ( ( member_nat @ Y @ A2 )
         => ( ord_less_nat @ ( finite_card_nat @ ( minus_minus_set_nat @ ( minus_minus_set_nat @ A2 @ ( insert_nat @ X @ bot_bot_set_nat ) ) @ ( insert_nat @ Y @ bot_bot_set_nat ) ) ) @ ( finite_card_nat @ A2 ) ) ) ) ) ).

% card_Diff2_less
thf(fact_493_card__Diff2__less,axiom,
    ! [A2: set_a,X: a,Y: a] :
      ( ( finite_finite_a @ A2 )
     => ( ( member_a @ X @ A2 )
       => ( ( member_a @ Y @ A2 )
         => ( ord_less_nat @ ( finite_card_a @ ( minus_minus_set_a @ ( minus_minus_set_a @ A2 @ ( insert_a @ X @ bot_bot_set_a ) ) @ ( insert_a @ Y @ bot_bot_set_a ) ) ) @ ( finite_card_a @ A2 ) ) ) ) ) ).

% card_Diff2_less
thf(fact_494_card__Diff1__less__iff,axiom,
    ! [A2: set_nat,X: nat] :
      ( ( ord_less_nat @ ( finite_card_nat @ ( minus_minus_set_nat @ A2 @ ( insert_nat @ X @ bot_bot_set_nat ) ) ) @ ( finite_card_nat @ A2 ) )
      = ( ( finite_finite_nat @ A2 )
        & ( member_nat @ X @ A2 ) ) ) ).

% card_Diff1_less_iff
thf(fact_495_card__Diff1__less__iff,axiom,
    ! [A2: set_a,X: a] :
      ( ( ord_less_nat @ ( finite_card_a @ ( minus_minus_set_a @ A2 @ ( insert_a @ X @ bot_bot_set_a ) ) ) @ ( finite_card_a @ A2 ) )
      = ( ( finite_finite_a @ A2 )
        & ( member_a @ X @ A2 ) ) ) ).

% card_Diff1_less_iff
thf(fact_496_infinite__remove,axiom,
    ! [S: set_nat,A: nat] :
      ( ~ ( finite_finite_nat @ S )
     => ~ ( finite_finite_nat @ ( minus_minus_set_nat @ S @ ( insert_nat @ A @ bot_bot_set_nat ) ) ) ) ).

% infinite_remove
thf(fact_497_infinite__remove,axiom,
    ! [S: set_a,A: a] :
      ( ~ ( finite_finite_a @ S )
     => ~ ( finite_finite_a @ ( minus_minus_set_a @ S @ ( insert_a @ A @ bot_bot_set_a ) ) ) ) ).

% infinite_remove
thf(fact_498_infinite__coinduct,axiom,
    ! [X5: set_nat > $o,A2: set_nat] :
      ( ( X5 @ A2 )
     => ( ! [A8: set_nat] :
            ( ( X5 @ A8 )
           => ? [X4: nat] :
                ( ( member_nat @ X4 @ A8 )
                & ( ( X5 @ ( minus_minus_set_nat @ A8 @ ( insert_nat @ X4 @ bot_bot_set_nat ) ) )
                  | ~ ( finite_finite_nat @ ( minus_minus_set_nat @ A8 @ ( insert_nat @ X4 @ bot_bot_set_nat ) ) ) ) ) )
       => ~ ( finite_finite_nat @ A2 ) ) ) ).

% infinite_coinduct
thf(fact_499_infinite__coinduct,axiom,
    ! [X5: set_a > $o,A2: set_a] :
      ( ( X5 @ A2 )
     => ( ! [A8: set_a] :
            ( ( X5 @ A8 )
           => ? [X4: a] :
                ( ( member_a @ X4 @ A8 )
                & ( ( X5 @ ( minus_minus_set_a @ A8 @ ( insert_a @ X4 @ bot_bot_set_a ) ) )
                  | ~ ( finite_finite_a @ ( minus_minus_set_a @ A8 @ ( insert_a @ X4 @ bot_bot_set_a ) ) ) ) ) )
       => ~ ( finite_finite_a @ A2 ) ) ) ).

% infinite_coinduct
thf(fact_500_finite__empty__induct,axiom,
    ! [A2: set_nat,P: set_nat > $o] :
      ( ( finite_finite_nat @ A2 )
     => ( ( P @ A2 )
       => ( ! [A3: nat,A8: set_nat] :
              ( ( finite_finite_nat @ A8 )
             => ( ( member_nat @ A3 @ A8 )
               => ( ( P @ A8 )
                 => ( P @ ( minus_minus_set_nat @ A8 @ ( insert_nat @ A3 @ bot_bot_set_nat ) ) ) ) ) )
         => ( P @ bot_bot_set_nat ) ) ) ) ).

% finite_empty_induct
thf(fact_501_finite__empty__induct,axiom,
    ! [A2: set_a,P: set_a > $o] :
      ( ( finite_finite_a @ A2 )
     => ( ( P @ A2 )
       => ( ! [A3: a,A8: set_a] :
              ( ( finite_finite_a @ A8 )
             => ( ( member_a @ A3 @ A8 )
               => ( ( P @ A8 )
                 => ( P @ ( minus_minus_set_a @ A8 @ ( insert_a @ A3 @ bot_bot_set_a ) ) ) ) ) )
         => ( P @ bot_bot_set_a ) ) ) ) ).

% finite_empty_induct
thf(fact_502_image__diff__subset,axiom,
    ! [F: nat > nat,A2: set_nat,B: set_nat] : ( ord_less_eq_set_nat @ ( minus_minus_set_nat @ ( image_nat_nat @ F @ A2 ) @ ( image_nat_nat @ F @ B ) ) @ ( image_nat_nat @ F @ ( minus_minus_set_nat @ A2 @ B ) ) ) ).

% image_diff_subset
thf(fact_503_image__diff__subset,axiom,
    ! [F: a > a,A2: set_a,B: set_a] : ( ord_less_eq_set_a @ ( minus_minus_set_a @ ( image_a_a @ F @ A2 ) @ ( image_a_a @ F @ B ) ) @ ( image_a_a @ F @ ( minus_minus_set_a @ A2 @ B ) ) ) ).

% image_diff_subset
thf(fact_504_card__le__sym__Diff,axiom,
    ! [A2: set_nat,B: set_nat] :
      ( ( finite_finite_nat @ A2 )
     => ( ( finite_finite_nat @ B )
       => ( ( ord_less_eq_nat @ ( finite_card_nat @ A2 ) @ ( finite_card_nat @ B ) )
         => ( ord_less_eq_nat @ ( finite_card_nat @ ( minus_minus_set_nat @ A2 @ B ) ) @ ( finite_card_nat @ ( minus_minus_set_nat @ B @ A2 ) ) ) ) ) ) ).

% card_le_sym_Diff
thf(fact_505_card__le__sym__Diff,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( finite_finite_a @ A2 )
     => ( ( finite_finite_a @ B )
       => ( ( ord_less_eq_nat @ ( finite_card_a @ A2 ) @ ( finite_card_a @ B ) )
         => ( ord_less_eq_nat @ ( finite_card_a @ ( minus_minus_set_a @ A2 @ B ) ) @ ( finite_card_a @ ( minus_minus_set_a @ B @ A2 ) ) ) ) ) ) ).

% card_le_sym_Diff
thf(fact_506_Diff__insert,axiom,
    ! [A2: set_a,A: a,B: set_a] :
      ( ( minus_minus_set_a @ A2 @ ( insert_a @ A @ B ) )
      = ( minus_minus_set_a @ ( minus_minus_set_a @ A2 @ B ) @ ( insert_a @ A @ bot_bot_set_a ) ) ) ).

% Diff_insert
thf(fact_507_insert__Diff,axiom,
    ! [A: nat,A2: set_nat] :
      ( ( member_nat @ A @ A2 )
     => ( ( insert_nat @ A @ ( minus_minus_set_nat @ A2 @ ( insert_nat @ A @ bot_bot_set_nat ) ) )
        = A2 ) ) ).

% insert_Diff
thf(fact_508_insert__Diff,axiom,
    ! [A: a,A2: set_a] :
      ( ( member_a @ A @ A2 )
     => ( ( insert_a @ A @ ( minus_minus_set_a @ A2 @ ( insert_a @ A @ bot_bot_set_a ) ) )
        = A2 ) ) ).

% insert_Diff
thf(fact_509_Diff__insert2,axiom,
    ! [A2: set_a,A: a,B: set_a] :
      ( ( minus_minus_set_a @ A2 @ ( insert_a @ A @ B ) )
      = ( minus_minus_set_a @ ( minus_minus_set_a @ A2 @ ( insert_a @ A @ bot_bot_set_a ) ) @ B ) ) ).

% Diff_insert2
thf(fact_510_Diff__insert__absorb,axiom,
    ! [X: nat,A2: set_nat] :
      ( ~ ( member_nat @ X @ A2 )
     => ( ( minus_minus_set_nat @ ( insert_nat @ X @ A2 ) @ ( insert_nat @ X @ bot_bot_set_nat ) )
        = A2 ) ) ).

% Diff_insert_absorb
thf(fact_511_Diff__insert__absorb,axiom,
    ! [X: a,A2: set_a] :
      ( ~ ( member_a @ X @ A2 )
     => ( ( minus_minus_set_a @ ( insert_a @ X @ A2 ) @ ( insert_a @ X @ bot_bot_set_a ) )
        = A2 ) ) ).

% Diff_insert_absorb
thf(fact_512_subset__Diff__insert,axiom,
    ! [A2: set_nat,B: set_nat,X: nat,C: set_nat] :
      ( ( ord_less_eq_set_nat @ A2 @ ( minus_minus_set_nat @ B @ ( insert_nat @ X @ C ) ) )
      = ( ( ord_less_eq_set_nat @ A2 @ ( minus_minus_set_nat @ B @ C ) )
        & ~ ( member_nat @ X @ A2 ) ) ) ).

% subset_Diff_insert
thf(fact_513_subset__Diff__insert,axiom,
    ! [A2: set_a,B: set_a,X: a,C: set_a] :
      ( ( ord_less_eq_set_a @ A2 @ ( minus_minus_set_a @ B @ ( insert_a @ X @ C ) ) )
      = ( ( ord_less_eq_set_a @ A2 @ ( minus_minus_set_a @ B @ C ) )
        & ~ ( member_a @ X @ A2 ) ) ) ).

% subset_Diff_insert
thf(fact_514_Diff__triv,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( ( inf_inf_set_a @ A2 @ B )
        = bot_bot_set_a )
     => ( ( minus_minus_set_a @ A2 @ B )
        = A2 ) ) ).

% Diff_triv
thf(fact_515_Int__Diff__disjoint,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( inf_inf_set_a @ ( inf_inf_set_a @ A2 @ B ) @ ( minus_minus_set_a @ A2 @ B ) )
      = bot_bot_set_a ) ).

% Int_Diff_disjoint
thf(fact_516_card__ge__0__finite,axiom,
    ! [A2: set_a] :
      ( ( ord_less_nat @ zero_zero_nat @ ( finite_card_a @ A2 ) )
     => ( finite_finite_a @ A2 ) ) ).

% card_ge_0_finite
thf(fact_517_card__ge__0__finite,axiom,
    ! [A2: set_nat] :
      ( ( ord_less_nat @ zero_zero_nat @ ( finite_card_nat @ A2 ) )
     => ( finite_finite_nat @ A2 ) ) ).

% card_ge_0_finite
thf(fact_518_Diff__partition,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( ord_less_eq_set_a @ A2 @ B )
     => ( ( sup_sup_set_a @ A2 @ ( minus_minus_set_a @ B @ A2 ) )
        = B ) ) ).

% Diff_partition
thf(fact_519_Diff__subset__conv,axiom,
    ! [A2: set_a,B: set_a,C: set_a] :
      ( ( ord_less_eq_set_a @ ( minus_minus_set_a @ A2 @ B ) @ C )
      = ( ord_less_eq_set_a @ A2 @ ( sup_sup_set_a @ B @ C ) ) ) ).

% Diff_subset_conv
thf(fact_520_Un__Diff__Int,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( sup_sup_set_a @ ( minus_minus_set_a @ A2 @ B ) @ ( inf_inf_set_a @ A2 @ B ) )
      = A2 ) ).

% Un_Diff_Int
thf(fact_521_Int__Diff__Un,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( sup_sup_set_a @ ( inf_inf_set_a @ A2 @ B ) @ ( minus_minus_set_a @ A2 @ B ) )
      = A2 ) ).

% Int_Diff_Un
thf(fact_522_Diff__Int,axiom,
    ! [A2: set_a,B: set_a,C: set_a] :
      ( ( minus_minus_set_a @ A2 @ ( inf_inf_set_a @ B @ C ) )
      = ( sup_sup_set_a @ ( minus_minus_set_a @ A2 @ B ) @ ( minus_minus_set_a @ A2 @ C ) ) ) ).

% Diff_Int
thf(fact_523_Diff__Un,axiom,
    ! [A2: set_a,B: set_a,C: set_a] :
      ( ( minus_minus_set_a @ A2 @ ( sup_sup_set_a @ B @ C ) )
      = ( inf_inf_set_a @ ( minus_minus_set_a @ A2 @ B ) @ ( minus_minus_set_a @ A2 @ C ) ) ) ).

% Diff_Un
thf(fact_524_remove__induct,axiom,
    ! [P: set_nat > $o,B: set_nat] :
      ( ( P @ bot_bot_set_nat )
     => ( ( ~ ( finite_finite_nat @ B )
         => ( P @ B ) )
       => ( ! [A8: set_nat] :
              ( ( finite_finite_nat @ A8 )
             => ( ( A8 != bot_bot_set_nat )
               => ( ( ord_less_eq_set_nat @ A8 @ B )
                 => ( ! [X4: nat] :
                        ( ( member_nat @ X4 @ A8 )
                       => ( P @ ( minus_minus_set_nat @ A8 @ ( insert_nat @ X4 @ bot_bot_set_nat ) ) ) )
                   => ( P @ A8 ) ) ) ) )
         => ( P @ B ) ) ) ) ).

% remove_induct
thf(fact_525_remove__induct,axiom,
    ! [P: set_a > $o,B: set_a] :
      ( ( P @ bot_bot_set_a )
     => ( ( ~ ( finite_finite_a @ B )
         => ( P @ B ) )
       => ( ! [A8: set_a] :
              ( ( finite_finite_a @ A8 )
             => ( ( A8 != bot_bot_set_a )
               => ( ( ord_less_eq_set_a @ A8 @ B )
                 => ( ! [X4: a] :
                        ( ( member_a @ X4 @ A8 )
                       => ( P @ ( minus_minus_set_a @ A8 @ ( insert_a @ X4 @ bot_bot_set_a ) ) ) )
                   => ( P @ A8 ) ) ) ) )
         => ( P @ B ) ) ) ) ).

% remove_induct
thf(fact_526_finite__remove__induct,axiom,
    ! [B: set_nat,P: set_nat > $o] :
      ( ( finite_finite_nat @ B )
     => ( ( P @ bot_bot_set_nat )
       => ( ! [A8: set_nat] :
              ( ( finite_finite_nat @ A8 )
             => ( ( A8 != bot_bot_set_nat )
               => ( ( ord_less_eq_set_nat @ A8 @ B )
                 => ( ! [X4: nat] :
                        ( ( member_nat @ X4 @ A8 )
                       => ( P @ ( minus_minus_set_nat @ A8 @ ( insert_nat @ X4 @ bot_bot_set_nat ) ) ) )
                   => ( P @ A8 ) ) ) ) )
         => ( P @ B ) ) ) ) ).

% finite_remove_induct
thf(fact_527_finite__remove__induct,axiom,
    ! [B: set_a,P: set_a > $o] :
      ( ( finite_finite_a @ B )
     => ( ( P @ bot_bot_set_a )
       => ( ! [A8: set_a] :
              ( ( finite_finite_a @ A8 )
             => ( ( A8 != bot_bot_set_a )
               => ( ( ord_less_eq_set_a @ A8 @ B )
                 => ( ! [X4: a] :
                        ( ( member_a @ X4 @ A8 )
                       => ( P @ ( minus_minus_set_a @ A8 @ ( insert_a @ X4 @ bot_bot_set_a ) ) ) )
                   => ( P @ A8 ) ) ) ) )
         => ( P @ B ) ) ) ) ).

% finite_remove_induct
thf(fact_528_card__Diff1__le,axiom,
    ! [A2: set_a,X: a] : ( ord_less_eq_nat @ ( finite_card_a @ ( minus_minus_set_a @ A2 @ ( insert_a @ X @ bot_bot_set_a ) ) ) @ ( finite_card_a @ A2 ) ) ).

% card_Diff1_le
thf(fact_529_card__gt__0__iff,axiom,
    ! [A2: set_nat] :
      ( ( ord_less_nat @ zero_zero_nat @ ( finite_card_nat @ A2 ) )
      = ( ( A2 != bot_bot_set_nat )
        & ( finite_finite_nat @ A2 ) ) ) ).

% card_gt_0_iff
thf(fact_530_card__gt__0__iff,axiom,
    ! [A2: set_a] :
      ( ( ord_less_nat @ zero_zero_nat @ ( finite_card_a @ A2 ) )
      = ( ( A2 != bot_bot_set_a )
        & ( finite_finite_a @ A2 ) ) ) ).

% card_gt_0_iff
thf(fact_531_subset__insert__iff,axiom,
    ! [A2: set_nat,X: nat,B: set_nat] :
      ( ( ord_less_eq_set_nat @ A2 @ ( insert_nat @ X @ B ) )
      = ( ( ( member_nat @ X @ A2 )
         => ( ord_less_eq_set_nat @ ( minus_minus_set_nat @ A2 @ ( insert_nat @ X @ bot_bot_set_nat ) ) @ B ) )
        & ( ~ ( member_nat @ X @ A2 )
         => ( ord_less_eq_set_nat @ A2 @ B ) ) ) ) ).

% subset_insert_iff
thf(fact_532_subset__insert__iff,axiom,
    ! [A2: set_a,X: a,B: set_a] :
      ( ( ord_less_eq_set_a @ A2 @ ( insert_a @ X @ B ) )
      = ( ( ( member_a @ X @ A2 )
         => ( ord_less_eq_set_a @ ( minus_minus_set_a @ A2 @ ( insert_a @ X @ bot_bot_set_a ) ) @ B ) )
        & ( ~ ( member_a @ X @ A2 )
         => ( ord_less_eq_set_a @ A2 @ B ) ) ) ) ).

% subset_insert_iff
thf(fact_533_Diff__single__insert,axiom,
    ! [A2: set_a,X: a,B: set_a] :
      ( ( ord_less_eq_set_a @ ( minus_minus_set_a @ A2 @ ( insert_a @ X @ bot_bot_set_a ) ) @ B )
     => ( ord_less_eq_set_a @ A2 @ ( insert_a @ X @ B ) ) ) ).

% Diff_single_insert
thf(fact_534_monoid_Oinverse_Ocong,axiom,
    group_inverse_a = group_inverse_a ).

% monoid.inverse.cong
thf(fact_535_monoid_Oinvertible_Ocong,axiom,
    group_invertible_a = group_invertible_a ).

% monoid.invertible.cong
thf(fact_536_subgroup__transitive,axiom,
    ! [K2: set_a,H2: set_a,Composition: a > a > a,Unit: a,G: set_a] :
      ( ( group_subgroup_a @ K2 @ H2 @ Composition @ Unit )
     => ( ( group_subgroup_a @ H2 @ G @ Composition @ Unit )
       => ( group_subgroup_a @ K2 @ G @ Composition @ Unit ) ) ) ).

% subgroup_transitive
thf(fact_537_additive__abelian__group_Osumsetdiff__sing,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,B: set_a,X: a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( pluenn3038260743871226533mset_a @ G @ Addition @ ( minus_minus_set_a @ A2 @ B ) @ ( insert_a @ X @ bot_bot_set_a ) )
        = ( minus_minus_set_a @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ ( insert_a @ X @ bot_bot_set_a ) ) @ ( pluenn3038260743871226533mset_a @ G @ Addition @ B @ ( insert_a @ X @ bot_bot_set_a ) ) ) ) ) ).

% additive_abelian_group.sumsetdiff_sing
thf(fact_538_monoid_OUnits_Ocong,axiom,
    group_Units_a = group_Units_a ).

% monoid.Units.cong
thf(fact_539_additive__abelian__group_Osumset__iterated__empty,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,R: nat] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( ord_less_nat @ zero_zero_nat @ R )
       => ( ( pluenn1960970773371692859ated_a @ G @ Addition @ Zero @ bot_bot_set_a @ R )
          = bot_bot_set_a ) ) ) ).

% additive_abelian_group.sumset_iterated_empty
thf(fact_540_commutative__monoid_Ocommutative,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat,X: nat,Y: nat] :
      ( ( group_6791354081887936081id_nat @ M @ Composition @ Unit )
     => ( ( member_nat @ X @ M )
       => ( ( member_nat @ Y @ M )
         => ( ( Composition @ X @ Y )
            = ( Composition @ Y @ X ) ) ) ) ) ).

% commutative_monoid.commutative
thf(fact_541_commutative__monoid_Ocommutative,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a,X: a,Y: a] :
      ( ( group_4866109990395492029noid_a @ M @ Composition @ Unit )
     => ( ( member_a @ X @ M )
       => ( ( member_a @ Y @ M )
         => ( ( Composition @ X @ Y )
            = ( Composition @ Y @ X ) ) ) ) ) ).

% commutative_monoid.commutative
thf(fact_542_finite__has__minimal2,axiom,
    ! [A2: set_set_a,A: set_a] :
      ( ( finite_finite_set_a @ A2 )
     => ( ( member_set_a @ A @ A2 )
       => ? [X3: set_a] :
            ( ( member_set_a @ X3 @ A2 )
            & ( ord_less_eq_set_a @ X3 @ A )
            & ! [Xa: set_a] :
                ( ( member_set_a @ Xa @ A2 )
               => ( ( ord_less_eq_set_a @ Xa @ X3 )
                 => ( X3 = Xa ) ) ) ) ) ) ).

% finite_has_minimal2
thf(fact_543_finite__has__minimal2,axiom,
    ! [A2: set_nat,A: nat] :
      ( ( finite_finite_nat @ A2 )
     => ( ( member_nat @ A @ A2 )
       => ? [X3: nat] :
            ( ( member_nat @ X3 @ A2 )
            & ( ord_less_eq_nat @ X3 @ A )
            & ! [Xa: nat] :
                ( ( member_nat @ Xa @ A2 )
               => ( ( ord_less_eq_nat @ Xa @ X3 )
                 => ( X3 = Xa ) ) ) ) ) ) ).

% finite_has_minimal2
thf(fact_544_finite__has__maximal2,axiom,
    ! [A2: set_set_a,A: set_a] :
      ( ( finite_finite_set_a @ A2 )
     => ( ( member_set_a @ A @ A2 )
       => ? [X3: set_a] :
            ( ( member_set_a @ X3 @ A2 )
            & ( ord_less_eq_set_a @ A @ X3 )
            & ! [Xa: set_a] :
                ( ( member_set_a @ Xa @ A2 )
               => ( ( ord_less_eq_set_a @ X3 @ Xa )
                 => ( X3 = Xa ) ) ) ) ) ) ).

% finite_has_maximal2
thf(fact_545_finite__has__maximal2,axiom,
    ! [A2: set_nat,A: nat] :
      ( ( finite_finite_nat @ A2 )
     => ( ( member_nat @ A @ A2 )
       => ? [X3: nat] :
            ( ( member_nat @ X3 @ A2 )
            & ( ord_less_eq_nat @ A @ X3 )
            & ! [Xa: nat] :
                ( ( member_nat @ Xa @ A2 )
               => ( ( ord_less_eq_nat @ X3 @ Xa )
                 => ( X3 = Xa ) ) ) ) ) ) ).

% finite_has_maximal2
thf(fact_546_all__subset__image,axiom,
    ! [F: nat > nat,A2: set_nat,P: set_nat > $o] :
      ( ( ! [B6: set_nat] :
            ( ( ord_less_eq_set_nat @ B6 @ ( image_nat_nat @ F @ A2 ) )
           => ( P @ B6 ) ) )
      = ( ! [B6: set_nat] :
            ( ( ord_less_eq_set_nat @ B6 @ A2 )
           => ( P @ ( image_nat_nat @ F @ B6 ) ) ) ) ) ).

% all_subset_image
thf(fact_547_all__subset__image,axiom,
    ! [F: a > a,A2: set_a,P: set_a > $o] :
      ( ( ! [B6: set_a] :
            ( ( ord_less_eq_set_a @ B6 @ ( image_a_a @ F @ A2 ) )
           => ( P @ B6 ) ) )
      = ( ! [B6: set_a] :
            ( ( ord_less_eq_set_a @ B6 @ A2 )
           => ( P @ ( image_a_a @ F @ B6 ) ) ) ) ) ).

% all_subset_image
thf(fact_548_infinite__imp__nonempty,axiom,
    ! [S: set_nat] :
      ( ~ ( finite_finite_nat @ S )
     => ( S != bot_bot_set_nat ) ) ).

% infinite_imp_nonempty
thf(fact_549_infinite__imp__nonempty,axiom,
    ! [S: set_a] :
      ( ~ ( finite_finite_a @ S )
     => ( S != bot_bot_set_a ) ) ).

% infinite_imp_nonempty
thf(fact_550_finite_OemptyI,axiom,
    finite_finite_nat @ bot_bot_set_nat ).

% finite.emptyI
thf(fact_551_finite_OemptyI,axiom,
    finite_finite_a @ bot_bot_set_a ).

% finite.emptyI
thf(fact_552_rev__finite__subset,axiom,
    ! [B: set_nat,A2: set_nat] :
      ( ( finite_finite_nat @ B )
     => ( ( ord_less_eq_set_nat @ A2 @ B )
       => ( finite_finite_nat @ A2 ) ) ) ).

% rev_finite_subset
thf(fact_553_rev__finite__subset,axiom,
    ! [B: set_a,A2: set_a] :
      ( ( finite_finite_a @ B )
     => ( ( ord_less_eq_set_a @ A2 @ B )
       => ( finite_finite_a @ A2 ) ) ) ).

% rev_finite_subset
thf(fact_554_infinite__super,axiom,
    ! [S: set_nat,T: set_nat] :
      ( ( ord_less_eq_set_nat @ S @ T )
     => ( ~ ( finite_finite_nat @ S )
       => ~ ( finite_finite_nat @ T ) ) ) ).

% infinite_super
thf(fact_555_infinite__super,axiom,
    ! [S: set_a,T: set_a] :
      ( ( ord_less_eq_set_a @ S @ T )
     => ( ~ ( finite_finite_a @ S )
       => ~ ( finite_finite_a @ T ) ) ) ).

% infinite_super
thf(fact_556_finite__subset,axiom,
    ! [A2: set_nat,B: set_nat] :
      ( ( ord_less_eq_set_nat @ A2 @ B )
     => ( ( finite_finite_nat @ B )
       => ( finite_finite_nat @ A2 ) ) ) ).

% finite_subset
thf(fact_557_finite__subset,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( ord_less_eq_set_a @ A2 @ B )
     => ( ( finite_finite_a @ B )
       => ( finite_finite_a @ A2 ) ) ) ).

% finite_subset
thf(fact_558_finite_OinsertI,axiom,
    ! [A2: set_a,A: a] :
      ( ( finite_finite_a @ A2 )
     => ( finite_finite_a @ ( insert_a @ A @ A2 ) ) ) ).

% finite.insertI
thf(fact_559_finite_OinsertI,axiom,
    ! [A2: set_nat,A: nat] :
      ( ( finite_finite_nat @ A2 )
     => ( finite_finite_nat @ ( insert_nat @ A @ A2 ) ) ) ).

% finite.insertI
thf(fact_560_infinite__Un,axiom,
    ! [S: set_nat,T: set_nat] :
      ( ( ~ ( finite_finite_nat @ ( sup_sup_set_nat @ S @ T ) ) )
      = ( ~ ( finite_finite_nat @ S )
        | ~ ( finite_finite_nat @ T ) ) ) ).

% infinite_Un
thf(fact_561_infinite__Un,axiom,
    ! [S: set_a,T: set_a] :
      ( ( ~ ( finite_finite_a @ ( sup_sup_set_a @ S @ T ) ) )
      = ( ~ ( finite_finite_a @ S )
        | ~ ( finite_finite_a @ T ) ) ) ).

% infinite_Un
thf(fact_562_Un__infinite,axiom,
    ! [S: set_nat,T: set_nat] :
      ( ~ ( finite_finite_nat @ S )
     => ~ ( finite_finite_nat @ ( sup_sup_set_nat @ S @ T ) ) ) ).

% Un_infinite
thf(fact_563_Un__infinite,axiom,
    ! [S: set_a,T: set_a] :
      ( ~ ( finite_finite_a @ S )
     => ~ ( finite_finite_a @ ( sup_sup_set_a @ S @ T ) ) ) ).

% Un_infinite
thf(fact_564_finite__UnI,axiom,
    ! [F2: set_nat,G: set_nat] :
      ( ( finite_finite_nat @ F2 )
     => ( ( finite_finite_nat @ G )
       => ( finite_finite_nat @ ( sup_sup_set_nat @ F2 @ G ) ) ) ) ).

% finite_UnI
thf(fact_565_finite__UnI,axiom,
    ! [F2: set_a,G: set_a] :
      ( ( finite_finite_a @ F2 )
     => ( ( finite_finite_a @ G )
       => ( finite_finite_a @ ( sup_sup_set_a @ F2 @ G ) ) ) ) ).

% finite_UnI
thf(fact_566_additive__abelian__group_Osumset__insert2,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,B: set_a,A2: set_a,X: a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( nO_MATCH_set_a_set_a @ bot_bot_set_a @ B )
       => ( ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ ( insert_a @ X @ B ) )
          = ( sup_sup_set_a @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ ( insert_a @ X @ bot_bot_set_a ) ) @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) ) ) ) ) ).

% additive_abelian_group.sumset_insert2
thf(fact_567_additive__abelian__group_Osumset__insert1,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,A2: set_a,X: a,B: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( nO_MATCH_set_a_set_a @ bot_bot_set_a @ A2 )
       => ( ( pluenn3038260743871226533mset_a @ G @ Addition @ ( insert_a @ X @ A2 ) @ B )
          = ( sup_sup_set_a @ ( pluenn3038260743871226533mset_a @ G @ Addition @ ( insert_a @ X @ bot_bot_set_a ) @ B ) @ ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ B ) ) ) ) ) ).

% additive_abelian_group.sumset_insert1
thf(fact_568_subgroup_Osubgroup__inverse__equality,axiom,
    ! [G: set_nat,M: set_nat,Composition: nat > nat > nat,Unit: nat,U: nat] :
      ( ( group_subgroup_nat @ G @ M @ Composition @ Unit )
     => ( ( member_nat @ U @ G )
       => ( ( group_inverse_nat @ M @ Composition @ Unit @ U )
          = ( group_inverse_nat @ G @ Composition @ Unit @ U ) ) ) ) ).

% subgroup.subgroup_inverse_equality
thf(fact_569_subgroup_Osubgroup__inverse__equality,axiom,
    ! [G: set_a,M: set_a,Composition: a > a > a,Unit: a,U: a] :
      ( ( group_subgroup_a @ G @ M @ Composition @ Unit )
     => ( ( member_a @ U @ G )
       => ( ( group_inverse_a @ M @ Composition @ Unit @ U )
          = ( group_inverse_a @ G @ Composition @ Unit @ U ) ) ) ) ).

% subgroup.subgroup_inverse_equality
thf(fact_570_group_Oinvertible,axiom,
    ! [G: set_nat,Composition: nat > nat > nat,Unit: nat,U: nat] :
      ( ( group_group_nat @ G @ Composition @ Unit )
     => ( ( member_nat @ U @ G )
       => ( group_invertible_nat @ G @ Composition @ Unit @ U ) ) ) ).

% group.invertible
thf(fact_571_group_Oinvertible,axiom,
    ! [G: set_a,Composition: a > a > a,Unit: a,U: a] :
      ( ( group_group_a @ G @ Composition @ Unit )
     => ( ( member_a @ U @ G )
       => ( group_invertible_a @ G @ Composition @ Unit @ U ) ) ) ).

% group.invertible
thf(fact_572_subgroup_Oaxioms_I2_J,axiom,
    ! [G: set_a,M: set_a,Composition: a > a > a,Unit: a] :
      ( ( group_subgroup_a @ G @ M @ Composition @ Unit )
     => ( group_group_a @ G @ Composition @ Unit ) ) ).

% subgroup.axioms(2)
thf(fact_573_abelian__group_Oaxioms_I1_J,axiom,
    ! [G: set_a,Composition: a > a > a,Unit: a] :
      ( ( group_201663378560352916roup_a @ G @ Composition @ Unit )
     => ( group_group_a @ G @ Composition @ Unit ) ) ).

% abelian_group.axioms(1)
thf(fact_574_abelian__group_Oaxioms_I2_J,axiom,
    ! [G: set_a,Composition: a > a > a,Unit: a] :
      ( ( group_201663378560352916roup_a @ G @ Composition @ Unit )
     => ( group_4866109990395492029noid_a @ G @ Composition @ Unit ) ) ).

% abelian_group.axioms(2)
thf(fact_575_finite__has__minimal,axiom,
    ! [A2: set_set_a] :
      ( ( finite_finite_set_a @ A2 )
     => ( ( A2 != bot_bot_set_set_a )
       => ? [X3: set_a] :
            ( ( member_set_a @ X3 @ A2 )
            & ! [Xa: set_a] :
                ( ( member_set_a @ Xa @ A2 )
               => ( ( ord_less_eq_set_a @ Xa @ X3 )
                 => ( X3 = Xa ) ) ) ) ) ) ).

% finite_has_minimal
thf(fact_576_finite__has__minimal,axiom,
    ! [A2: set_nat] :
      ( ( finite_finite_nat @ A2 )
     => ( ( A2 != bot_bot_set_nat )
       => ? [X3: nat] :
            ( ( member_nat @ X3 @ A2 )
            & ! [Xa: nat] :
                ( ( member_nat @ Xa @ A2 )
               => ( ( ord_less_eq_nat @ Xa @ X3 )
                 => ( X3 = Xa ) ) ) ) ) ) ).

% finite_has_minimal
thf(fact_577_finite__has__maximal,axiom,
    ! [A2: set_set_a] :
      ( ( finite_finite_set_a @ A2 )
     => ( ( A2 != bot_bot_set_set_a )
       => ? [X3: set_a] :
            ( ( member_set_a @ X3 @ A2 )
            & ! [Xa: set_a] :
                ( ( member_set_a @ Xa @ A2 )
               => ( ( ord_less_eq_set_a @ X3 @ Xa )
                 => ( X3 = Xa ) ) ) ) ) ) ).

% finite_has_maximal
thf(fact_578_finite__has__maximal,axiom,
    ! [A2: set_nat] :
      ( ( finite_finite_nat @ A2 )
     => ( ( A2 != bot_bot_set_nat )
       => ? [X3: nat] :
            ( ( member_nat @ X3 @ A2 )
            & ! [Xa: nat] :
                ( ( member_nat @ Xa @ A2 )
               => ( ( ord_less_eq_nat @ X3 @ Xa )
                 => ( X3 = Xa ) ) ) ) ) ) ).

% finite_has_maximal
thf(fact_579_all__finite__subset__image,axiom,
    ! [F: nat > nat,A2: set_nat,P: set_nat > $o] :
      ( ( ! [B6: set_nat] :
            ( ( ( finite_finite_nat @ B6 )
              & ( ord_less_eq_set_nat @ B6 @ ( image_nat_nat @ F @ A2 ) ) )
           => ( P @ B6 ) ) )
      = ( ! [B6: set_nat] :
            ( ( ( finite_finite_nat @ B6 )
              & ( ord_less_eq_set_nat @ B6 @ A2 ) )
           => ( P @ ( image_nat_nat @ F @ B6 ) ) ) ) ) ).

% all_finite_subset_image
thf(fact_580_all__finite__subset__image,axiom,
    ! [F: a > nat,A2: set_a,P: set_nat > $o] :
      ( ( ! [B6: set_nat] :
            ( ( ( finite_finite_nat @ B6 )
              & ( ord_less_eq_set_nat @ B6 @ ( image_a_nat @ F @ A2 ) ) )
           => ( P @ B6 ) ) )
      = ( ! [B6: set_a] :
            ( ( ( finite_finite_a @ B6 )
              & ( ord_less_eq_set_a @ B6 @ A2 ) )
           => ( P @ ( image_a_nat @ F @ B6 ) ) ) ) ) ).

% all_finite_subset_image
thf(fact_581_all__finite__subset__image,axiom,
    ! [F: nat > a,A2: set_nat,P: set_a > $o] :
      ( ( ! [B6: set_a] :
            ( ( ( finite_finite_a @ B6 )
              & ( ord_less_eq_set_a @ B6 @ ( image_nat_a @ F @ A2 ) ) )
           => ( P @ B6 ) ) )
      = ( ! [B6: set_nat] :
            ( ( ( finite_finite_nat @ B6 )
              & ( ord_less_eq_set_nat @ B6 @ A2 ) )
           => ( P @ ( image_nat_a @ F @ B6 ) ) ) ) ) ).

% all_finite_subset_image
thf(fact_582_all__finite__subset__image,axiom,
    ! [F: a > a,A2: set_a,P: set_a > $o] :
      ( ( ! [B6: set_a] :
            ( ( ( finite_finite_a @ B6 )
              & ( ord_less_eq_set_a @ B6 @ ( image_a_a @ F @ A2 ) ) )
           => ( P @ B6 ) ) )
      = ( ! [B6: set_a] :
            ( ( ( finite_finite_a @ B6 )
              & ( ord_less_eq_set_a @ B6 @ A2 ) )
           => ( P @ ( image_a_a @ F @ B6 ) ) ) ) ) ).

% all_finite_subset_image
thf(fact_583_ex__finite__subset__image,axiom,
    ! [F: nat > nat,A2: set_nat,P: set_nat > $o] :
      ( ( ? [B6: set_nat] :
            ( ( finite_finite_nat @ B6 )
            & ( ord_less_eq_set_nat @ B6 @ ( image_nat_nat @ F @ A2 ) )
            & ( P @ B6 ) ) )
      = ( ? [B6: set_nat] :
            ( ( finite_finite_nat @ B6 )
            & ( ord_less_eq_set_nat @ B6 @ A2 )
            & ( P @ ( image_nat_nat @ F @ B6 ) ) ) ) ) ).

% ex_finite_subset_image
thf(fact_584_ex__finite__subset__image,axiom,
    ! [F: a > nat,A2: set_a,P: set_nat > $o] :
      ( ( ? [B6: set_nat] :
            ( ( finite_finite_nat @ B6 )
            & ( ord_less_eq_set_nat @ B6 @ ( image_a_nat @ F @ A2 ) )
            & ( P @ B6 ) ) )
      = ( ? [B6: set_a] :
            ( ( finite_finite_a @ B6 )
            & ( ord_less_eq_set_a @ B6 @ A2 )
            & ( P @ ( image_a_nat @ F @ B6 ) ) ) ) ) ).

% ex_finite_subset_image
thf(fact_585_ex__finite__subset__image,axiom,
    ! [F: nat > a,A2: set_nat,P: set_a > $o] :
      ( ( ? [B6: set_a] :
            ( ( finite_finite_a @ B6 )
            & ( ord_less_eq_set_a @ B6 @ ( image_nat_a @ F @ A2 ) )
            & ( P @ B6 ) ) )
      = ( ? [B6: set_nat] :
            ( ( finite_finite_nat @ B6 )
            & ( ord_less_eq_set_nat @ B6 @ A2 )
            & ( P @ ( image_nat_a @ F @ B6 ) ) ) ) ) ).

% ex_finite_subset_image
thf(fact_586_ex__finite__subset__image,axiom,
    ! [F: a > a,A2: set_a,P: set_a > $o] :
      ( ( ? [B6: set_a] :
            ( ( finite_finite_a @ B6 )
            & ( ord_less_eq_set_a @ B6 @ ( image_a_a @ F @ A2 ) )
            & ( P @ B6 ) ) )
      = ( ? [B6: set_a] :
            ( ( finite_finite_a @ B6 )
            & ( ord_less_eq_set_a @ B6 @ A2 )
            & ( P @ ( image_a_a @ F @ B6 ) ) ) ) ) ).

% ex_finite_subset_image
thf(fact_587_finite__subset__image,axiom,
    ! [B: set_nat,F: nat > nat,A2: set_nat] :
      ( ( finite_finite_nat @ B )
     => ( ( ord_less_eq_set_nat @ B @ ( image_nat_nat @ F @ A2 ) )
       => ? [C3: set_nat] :
            ( ( ord_less_eq_set_nat @ C3 @ A2 )
            & ( finite_finite_nat @ C3 )
            & ( B
              = ( image_nat_nat @ F @ C3 ) ) ) ) ) ).

% finite_subset_image
thf(fact_588_finite__subset__image,axiom,
    ! [B: set_nat,F: a > nat,A2: set_a] :
      ( ( finite_finite_nat @ B )
     => ( ( ord_less_eq_set_nat @ B @ ( image_a_nat @ F @ A2 ) )
       => ? [C3: set_a] :
            ( ( ord_less_eq_set_a @ C3 @ A2 )
            & ( finite_finite_a @ C3 )
            & ( B
              = ( image_a_nat @ F @ C3 ) ) ) ) ) ).

% finite_subset_image
thf(fact_589_finite__subset__image,axiom,
    ! [B: set_a,F: nat > a,A2: set_nat] :
      ( ( finite_finite_a @ B )
     => ( ( ord_less_eq_set_a @ B @ ( image_nat_a @ F @ A2 ) )
       => ? [C3: set_nat] :
            ( ( ord_less_eq_set_nat @ C3 @ A2 )
            & ( finite_finite_nat @ C3 )
            & ( B
              = ( image_nat_a @ F @ C3 ) ) ) ) ) ).

% finite_subset_image
thf(fact_590_finite__subset__image,axiom,
    ! [B: set_a,F: a > a,A2: set_a] :
      ( ( finite_finite_a @ B )
     => ( ( ord_less_eq_set_a @ B @ ( image_a_a @ F @ A2 ) )
       => ? [C3: set_a] :
            ( ( ord_less_eq_set_a @ C3 @ A2 )
            & ( finite_finite_a @ C3 )
            & ( B
              = ( image_a_a @ F @ C3 ) ) ) ) ) ).

% finite_subset_image
thf(fact_591_finite__surj,axiom,
    ! [A2: set_a,B: set_nat,F: a > nat] :
      ( ( finite_finite_a @ A2 )
     => ( ( ord_less_eq_set_nat @ B @ ( image_a_nat @ F @ A2 ) )
       => ( finite_finite_nat @ B ) ) ) ).

% finite_surj
thf(fact_592_finite__surj,axiom,
    ! [A2: set_nat,B: set_nat,F: nat > nat] :
      ( ( finite_finite_nat @ A2 )
     => ( ( ord_less_eq_set_nat @ B @ ( image_nat_nat @ F @ A2 ) )
       => ( finite_finite_nat @ B ) ) ) ).

% finite_surj
thf(fact_593_finite__surj,axiom,
    ! [A2: set_a,B: set_a,F: a > a] :
      ( ( finite_finite_a @ A2 )
     => ( ( ord_less_eq_set_a @ B @ ( image_a_a @ F @ A2 ) )
       => ( finite_finite_a @ B ) ) ) ).

% finite_surj
thf(fact_594_finite__surj,axiom,
    ! [A2: set_nat,B: set_a,F: nat > a] :
      ( ( finite_finite_nat @ A2 )
     => ( ( ord_less_eq_set_a @ B @ ( image_nat_a @ F @ A2 ) )
       => ( finite_finite_a @ B ) ) ) ).

% finite_surj
thf(fact_595_finite_Ocases,axiom,
    ! [A: set_nat] :
      ( ( finite_finite_nat @ A )
     => ( ( A != bot_bot_set_nat )
       => ~ ! [A8: set_nat] :
              ( ? [A3: nat] :
                  ( A
                  = ( insert_nat @ A3 @ A8 ) )
             => ~ ( finite_finite_nat @ A8 ) ) ) ) ).

% finite.cases
thf(fact_596_finite_Ocases,axiom,
    ! [A: set_a] :
      ( ( finite_finite_a @ A )
     => ( ( A != bot_bot_set_a )
       => ~ ! [A8: set_a] :
              ( ? [A3: a] :
                  ( A
                  = ( insert_a @ A3 @ A8 ) )
             => ~ ( finite_finite_a @ A8 ) ) ) ) ).

% finite.cases
thf(fact_597_finite_Osimps,axiom,
    ( finite_finite_nat
    = ( ^ [A4: set_nat] :
          ( ( A4 = bot_bot_set_nat )
          | ? [A6: set_nat,B3: nat] :
              ( ( A4
                = ( insert_nat @ B3 @ A6 ) )
              & ( finite_finite_nat @ A6 ) ) ) ) ) ).

% finite.simps
thf(fact_598_finite_Osimps,axiom,
    ( finite_finite_a
    = ( ^ [A4: set_a] :
          ( ( A4 = bot_bot_set_a )
          | ? [A6: set_a,B3: a] :
              ( ( A4
                = ( insert_a @ B3 @ A6 ) )
              & ( finite_finite_a @ A6 ) ) ) ) ) ).

% finite.simps
thf(fact_599_finite__induct,axiom,
    ! [F2: set_nat,P: set_nat > $o] :
      ( ( finite_finite_nat @ F2 )
     => ( ( P @ bot_bot_set_nat )
       => ( ! [X3: nat,F3: set_nat] :
              ( ( finite_finite_nat @ F3 )
             => ( ~ ( member_nat @ X3 @ F3 )
               => ( ( P @ F3 )
                 => ( P @ ( insert_nat @ X3 @ F3 ) ) ) ) )
         => ( P @ F2 ) ) ) ) ).

% finite_induct
thf(fact_600_finite__induct,axiom,
    ! [F2: set_a,P: set_a > $o] :
      ( ( finite_finite_a @ F2 )
     => ( ( P @ bot_bot_set_a )
       => ( ! [X3: a,F3: set_a] :
              ( ( finite_finite_a @ F3 )
             => ( ~ ( member_a @ X3 @ F3 )
               => ( ( P @ F3 )
                 => ( P @ ( insert_a @ X3 @ F3 ) ) ) ) )
         => ( P @ F2 ) ) ) ) ).

% finite_induct
thf(fact_601_finite__ne__induct,axiom,
    ! [F2: set_nat,P: set_nat > $o] :
      ( ( finite_finite_nat @ F2 )
     => ( ( F2 != bot_bot_set_nat )
       => ( ! [X3: nat] : ( P @ ( insert_nat @ X3 @ bot_bot_set_nat ) )
         => ( ! [X3: nat,F3: set_nat] :
                ( ( finite_finite_nat @ F3 )
               => ( ( F3 != bot_bot_set_nat )
                 => ( ~ ( member_nat @ X3 @ F3 )
                   => ( ( P @ F3 )
                     => ( P @ ( insert_nat @ X3 @ F3 ) ) ) ) ) )
           => ( P @ F2 ) ) ) ) ) ).

% finite_ne_induct
thf(fact_602_finite__ne__induct,axiom,
    ! [F2: set_a,P: set_a > $o] :
      ( ( finite_finite_a @ F2 )
     => ( ( F2 != bot_bot_set_a )
       => ( ! [X3: a] : ( P @ ( insert_a @ X3 @ bot_bot_set_a ) )
         => ( ! [X3: a,F3: set_a] :
                ( ( finite_finite_a @ F3 )
               => ( ( F3 != bot_bot_set_a )
                 => ( ~ ( member_a @ X3 @ F3 )
                   => ( ( P @ F3 )
                     => ( P @ ( insert_a @ X3 @ F3 ) ) ) ) ) )
           => ( P @ F2 ) ) ) ) ) ).

% finite_ne_induct
thf(fact_603_infinite__finite__induct,axiom,
    ! [P: set_nat > $o,A2: set_nat] :
      ( ! [A8: set_nat] :
          ( ~ ( finite_finite_nat @ A8 )
         => ( P @ A8 ) )
     => ( ( P @ bot_bot_set_nat )
       => ( ! [X3: nat,F3: set_nat] :
              ( ( finite_finite_nat @ F3 )
             => ( ~ ( member_nat @ X3 @ F3 )
               => ( ( P @ F3 )
                 => ( P @ ( insert_nat @ X3 @ F3 ) ) ) ) )
         => ( P @ A2 ) ) ) ) ).

% infinite_finite_induct
thf(fact_604_infinite__finite__induct,axiom,
    ! [P: set_a > $o,A2: set_a] :
      ( ! [A8: set_a] :
          ( ~ ( finite_finite_a @ A8 )
         => ( P @ A8 ) )
     => ( ( P @ bot_bot_set_a )
       => ( ! [X3: a,F3: set_a] :
              ( ( finite_finite_a @ F3 )
             => ( ~ ( member_a @ X3 @ F3 )
               => ( ( P @ F3 )
                 => ( P @ ( insert_a @ X3 @ F3 ) ) ) ) )
         => ( P @ A2 ) ) ) ) ).

% infinite_finite_induct
thf(fact_605_infinite__arbitrarily__large,axiom,
    ! [A2: set_nat,N2: nat] :
      ( ~ ( finite_finite_nat @ A2 )
     => ? [B7: set_nat] :
          ( ( finite_finite_nat @ B7 )
          & ( ( finite_card_nat @ B7 )
            = N2 )
          & ( ord_less_eq_set_nat @ B7 @ A2 ) ) ) ).

% infinite_arbitrarily_large
thf(fact_606_infinite__arbitrarily__large,axiom,
    ! [A2: set_a,N2: nat] :
      ( ~ ( finite_finite_a @ A2 )
     => ? [B7: set_a] :
          ( ( finite_finite_a @ B7 )
          & ( ( finite_card_a @ B7 )
            = N2 )
          & ( ord_less_eq_set_a @ B7 @ A2 ) ) ) ).

% infinite_arbitrarily_large
thf(fact_607_card__subset__eq,axiom,
    ! [B: set_nat,A2: set_nat] :
      ( ( finite_finite_nat @ B )
     => ( ( ord_less_eq_set_nat @ A2 @ B )
       => ( ( ( finite_card_nat @ A2 )
            = ( finite_card_nat @ B ) )
         => ( A2 = B ) ) ) ) ).

% card_subset_eq
thf(fact_608_card__subset__eq,axiom,
    ! [B: set_a,A2: set_a] :
      ( ( finite_finite_a @ B )
     => ( ( ord_less_eq_set_a @ A2 @ B )
       => ( ( ( finite_card_a @ A2 )
            = ( finite_card_a @ B ) )
         => ( A2 = B ) ) ) ) ).

% card_subset_eq
thf(fact_609_card__insert__le,axiom,
    ! [A2: set_a,X: a] : ( ord_less_eq_nat @ ( finite_card_a @ A2 ) @ ( finite_card_a @ ( insert_a @ X @ A2 ) ) ) ).

% card_insert_le
thf(fact_610_subgroup_Oimage__of__inverse,axiom,
    ! [G: set_nat,M: set_nat,Composition: nat > nat > nat,Unit: nat,X: nat] :
      ( ( group_subgroup_nat @ G @ M @ Composition @ Unit )
     => ( ( member_nat @ X @ G )
       => ( member_nat @ X @ ( image_nat_nat @ ( group_inverse_nat @ M @ Composition @ Unit ) @ G ) ) ) ) ).

% subgroup.image_of_inverse
thf(fact_611_subgroup_Oimage__of__inverse,axiom,
    ! [G: set_a,M: set_a,Composition: a > a > a,Unit: a,X: a] :
      ( ( group_subgroup_a @ G @ M @ Composition @ Unit )
     => ( ( member_a @ X @ G )
       => ( member_a @ X @ ( image_a_a @ ( group_inverse_a @ M @ Composition @ Unit ) @ G ) ) ) ) ).

% subgroup.image_of_inverse
thf(fact_612_subgroup_Osubgroup__inverse__iff,axiom,
    ! [G: set_nat,M: set_nat,Composition: nat > nat > nat,Unit: nat,X: nat] :
      ( ( group_subgroup_nat @ G @ M @ Composition @ Unit )
     => ( ( group_invertible_nat @ M @ Composition @ Unit @ X )
       => ( ( member_nat @ X @ M )
         => ( ( member_nat @ ( group_inverse_nat @ M @ Composition @ Unit @ X ) @ G )
            = ( member_nat @ X @ G ) ) ) ) ) ).

% subgroup.subgroup_inverse_iff
thf(fact_613_subgroup_Osubgroup__inverse__iff,axiom,
    ! [G: set_a,M: set_a,Composition: a > a > a,Unit: a,X: a] :
      ( ( group_subgroup_a @ G @ M @ Composition @ Unit )
     => ( ( group_invertible_a @ M @ Composition @ Unit @ X )
       => ( ( member_a @ X @ M )
         => ( ( member_a @ ( group_inverse_a @ M @ Composition @ Unit @ X ) @ G )
            = ( member_a @ X @ G ) ) ) ) ) ).

% subgroup.subgroup_inverse_iff
thf(fact_614_finite__subset__induct_H,axiom,
    ! [F2: set_nat,A2: set_nat,P: set_nat > $o] :
      ( ( finite_finite_nat @ F2 )
     => ( ( ord_less_eq_set_nat @ F2 @ A2 )
       => ( ( P @ bot_bot_set_nat )
         => ( ! [A3: nat,F3: set_nat] :
                ( ( finite_finite_nat @ F3 )
               => ( ( member_nat @ A3 @ A2 )
                 => ( ( ord_less_eq_set_nat @ F3 @ A2 )
                   => ( ~ ( member_nat @ A3 @ F3 )
                     => ( ( P @ F3 )
                       => ( P @ ( insert_nat @ A3 @ F3 ) ) ) ) ) ) )
           => ( P @ F2 ) ) ) ) ) ).

% finite_subset_induct'
thf(fact_615_finite__subset__induct_H,axiom,
    ! [F2: set_a,A2: set_a,P: set_a > $o] :
      ( ( finite_finite_a @ F2 )
     => ( ( ord_less_eq_set_a @ F2 @ A2 )
       => ( ( P @ bot_bot_set_a )
         => ( ! [A3: a,F3: set_a] :
                ( ( finite_finite_a @ F3 )
               => ( ( member_a @ A3 @ A2 )
                 => ( ( ord_less_eq_set_a @ F3 @ A2 )
                   => ( ~ ( member_a @ A3 @ F3 )
                     => ( ( P @ F3 )
                       => ( P @ ( insert_a @ A3 @ F3 ) ) ) ) ) ) )
           => ( P @ F2 ) ) ) ) ) ).

% finite_subset_induct'
thf(fact_616_finite__subset__induct,axiom,
    ! [F2: set_nat,A2: set_nat,P: set_nat > $o] :
      ( ( finite_finite_nat @ F2 )
     => ( ( ord_less_eq_set_nat @ F2 @ A2 )
       => ( ( P @ bot_bot_set_nat )
         => ( ! [A3: nat,F3: set_nat] :
                ( ( finite_finite_nat @ F3 )
               => ( ( member_nat @ A3 @ A2 )
                 => ( ~ ( member_nat @ A3 @ F3 )
                   => ( ( P @ F3 )
                     => ( P @ ( insert_nat @ A3 @ F3 ) ) ) ) ) )
           => ( P @ F2 ) ) ) ) ) ).

% finite_subset_induct
thf(fact_617_finite__subset__induct,axiom,
    ! [F2: set_a,A2: set_a,P: set_a > $o] :
      ( ( finite_finite_a @ F2 )
     => ( ( ord_less_eq_set_a @ F2 @ A2 )
       => ( ( P @ bot_bot_set_a )
         => ( ! [A3: a,F3: set_a] :
                ( ( finite_finite_a @ F3 )
               => ( ( member_a @ A3 @ A2 )
                 => ( ~ ( member_a @ A3 @ F3 )
                   => ( ( P @ F3 )
                     => ( P @ ( insert_a @ A3 @ F3 ) ) ) ) ) )
           => ( P @ F2 ) ) ) ) ) ).

% finite_subset_induct
thf(fact_618_abelian__group__def,axiom,
    ( group_201663378560352916roup_a
    = ( ^ [G4: set_a,Composition2: a > a > a,Unit2: a] :
          ( ( group_group_a @ G4 @ Composition2 @ Unit2 )
          & ( group_4866109990395492029noid_a @ G4 @ Composition2 @ Unit2 ) ) ) ) ).

% abelian_group_def
thf(fact_619_abelian__group_Ointro,axiom,
    ! [G: set_a,Composition: a > a > a,Unit: a] :
      ( ( group_group_a @ G @ Composition @ Unit )
     => ( ( group_4866109990395492029noid_a @ G @ Composition @ Unit )
       => ( group_201663378560352916roup_a @ G @ Composition @ Unit ) ) ) ).

% abelian_group.intro
thf(fact_620_card__eq__0__iff,axiom,
    ! [A2: set_nat] :
      ( ( ( finite_card_nat @ A2 )
        = zero_zero_nat )
      = ( ( A2 = bot_bot_set_nat )
        | ~ ( finite_finite_nat @ A2 ) ) ) ).

% card_eq_0_iff
thf(fact_621_card__eq__0__iff,axiom,
    ! [A2: set_a] :
      ( ( ( finite_card_a @ A2 )
        = zero_zero_nat )
      = ( ( A2 = bot_bot_set_a )
        | ~ ( finite_finite_a @ A2 ) ) ) ).

% card_eq_0_iff
thf(fact_622_card__image__le,axiom,
    ! [A2: set_a,F: a > a] :
      ( ( finite_finite_a @ A2 )
     => ( ord_less_eq_nat @ ( finite_card_a @ ( image_a_a @ F @ A2 ) ) @ ( finite_card_a @ A2 ) ) ) ).

% card_image_le
thf(fact_623_card__image__le,axiom,
    ! [A2: set_nat,F: nat > nat] :
      ( ( finite_finite_nat @ A2 )
     => ( ord_less_eq_nat @ ( finite_card_nat @ ( image_nat_nat @ F @ A2 ) ) @ ( finite_card_nat @ A2 ) ) ) ).

% card_image_le
thf(fact_624_card__image__le,axiom,
    ! [A2: set_nat,F: nat > a] :
      ( ( finite_finite_nat @ A2 )
     => ( ord_less_eq_nat @ ( finite_card_a @ ( image_nat_a @ F @ A2 ) ) @ ( finite_card_nat @ A2 ) ) ) ).

% card_image_le
thf(fact_625_finite__if__finite__subsets__card__bdd,axiom,
    ! [F2: set_nat,C: nat] :
      ( ! [G5: set_nat] :
          ( ( ord_less_eq_set_nat @ G5 @ F2 )
         => ( ( finite_finite_nat @ G5 )
           => ( ord_less_eq_nat @ ( finite_card_nat @ G5 ) @ C ) ) )
     => ( ( finite_finite_nat @ F2 )
        & ( ord_less_eq_nat @ ( finite_card_nat @ F2 ) @ C ) ) ) ).

% finite_if_finite_subsets_card_bdd
thf(fact_626_finite__if__finite__subsets__card__bdd,axiom,
    ! [F2: set_a,C: nat] :
      ( ! [G5: set_a] :
          ( ( ord_less_eq_set_a @ G5 @ F2 )
         => ( ( finite_finite_a @ G5 )
           => ( ord_less_eq_nat @ ( finite_card_a @ G5 ) @ C ) ) )
     => ( ( finite_finite_a @ F2 )
        & ( ord_less_eq_nat @ ( finite_card_a @ F2 ) @ C ) ) ) ).

% finite_if_finite_subsets_card_bdd
thf(fact_627_obtain__subset__with__card__n,axiom,
    ! [N2: nat,S: set_nat] :
      ( ( ord_less_eq_nat @ N2 @ ( finite_card_nat @ S ) )
     => ~ ! [T3: set_nat] :
            ( ( ord_less_eq_set_nat @ T3 @ S )
           => ( ( ( finite_card_nat @ T3 )
                = N2 )
             => ~ ( finite_finite_nat @ T3 ) ) ) ) ).

% obtain_subset_with_card_n
thf(fact_628_obtain__subset__with__card__n,axiom,
    ! [N2: nat,S: set_a] :
      ( ( ord_less_eq_nat @ N2 @ ( finite_card_a @ S ) )
     => ~ ! [T3: set_a] :
            ( ( ord_less_eq_set_a @ T3 @ S )
           => ( ( ( finite_card_a @ T3 )
                = N2 )
             => ~ ( finite_finite_a @ T3 ) ) ) ) ).

% obtain_subset_with_card_n
thf(fact_629_exists__subset__between,axiom,
    ! [A2: set_nat,N2: nat,C: set_nat] :
      ( ( ord_less_eq_nat @ ( finite_card_nat @ A2 ) @ N2 )
     => ( ( ord_less_eq_nat @ N2 @ ( finite_card_nat @ C ) )
       => ( ( ord_less_eq_set_nat @ A2 @ C )
         => ( ( finite_finite_nat @ C )
           => ? [B7: set_nat] :
                ( ( ord_less_eq_set_nat @ A2 @ B7 )
                & ( ord_less_eq_set_nat @ B7 @ C )
                & ( ( finite_card_nat @ B7 )
                  = N2 ) ) ) ) ) ) ).

% exists_subset_between
thf(fact_630_exists__subset__between,axiom,
    ! [A2: set_a,N2: nat,C: set_a] :
      ( ( ord_less_eq_nat @ ( finite_card_a @ A2 ) @ N2 )
     => ( ( ord_less_eq_nat @ N2 @ ( finite_card_a @ C ) )
       => ( ( ord_less_eq_set_a @ A2 @ C )
         => ( ( finite_finite_a @ C )
           => ? [B7: set_a] :
                ( ( ord_less_eq_set_a @ A2 @ B7 )
                & ( ord_less_eq_set_a @ B7 @ C )
                & ( ( finite_card_a @ B7 )
                  = N2 ) ) ) ) ) ) ).

% exists_subset_between
thf(fact_631_card__seteq,axiom,
    ! [B: set_nat,A2: set_nat] :
      ( ( finite_finite_nat @ B )
     => ( ( ord_less_eq_set_nat @ A2 @ B )
       => ( ( ord_less_eq_nat @ ( finite_card_nat @ B ) @ ( finite_card_nat @ A2 ) )
         => ( A2 = B ) ) ) ) ).

% card_seteq
thf(fact_632_card__seteq,axiom,
    ! [B: set_a,A2: set_a] :
      ( ( finite_finite_a @ B )
     => ( ( ord_less_eq_set_a @ A2 @ B )
       => ( ( ord_less_eq_nat @ ( finite_card_a @ B ) @ ( finite_card_a @ A2 ) )
         => ( A2 = B ) ) ) ) ).

% card_seteq
thf(fact_633_card__mono,axiom,
    ! [B: set_nat,A2: set_nat] :
      ( ( finite_finite_nat @ B )
     => ( ( ord_less_eq_set_nat @ A2 @ B )
       => ( ord_less_eq_nat @ ( finite_card_nat @ A2 ) @ ( finite_card_nat @ B ) ) ) ) ).

% card_mono
thf(fact_634_card__mono,axiom,
    ! [B: set_a,A2: set_a] :
      ( ( finite_finite_a @ B )
     => ( ( ord_less_eq_set_a @ A2 @ B )
       => ( ord_less_eq_nat @ ( finite_card_a @ A2 ) @ ( finite_card_a @ B ) ) ) ) ).

% card_mono
thf(fact_635_group_Oinverse__subgroupI,axiom,
    ! [G: set_nat,Composition: nat > nat > nat,Unit: nat,H2: set_nat] :
      ( ( group_group_nat @ G @ Composition @ Unit )
     => ( ( group_subgroup_nat @ H2 @ G @ Composition @ Unit )
       => ( group_subgroup_nat @ ( image_nat_nat @ ( group_inverse_nat @ G @ Composition @ Unit ) @ H2 ) @ G @ Composition @ Unit ) ) ) ).

% group.inverse_subgroupI
thf(fact_636_group_Oinverse__subgroupI,axiom,
    ! [G: set_a,Composition: a > a > a,Unit: a,H2: set_a] :
      ( ( group_group_a @ G @ Composition @ Unit )
     => ( ( group_subgroup_a @ H2 @ G @ Composition @ Unit )
       => ( group_subgroup_a @ ( image_a_a @ ( group_inverse_a @ G @ Composition @ Unit ) @ H2 ) @ G @ Composition @ Unit ) ) ) ).

% group.inverse_subgroupI
thf(fact_637_surj__card__le,axiom,
    ! [A2: set_nat,B: set_nat,F: nat > nat] :
      ( ( finite_finite_nat @ A2 )
     => ( ( ord_less_eq_set_nat @ B @ ( image_nat_nat @ F @ A2 ) )
       => ( ord_less_eq_nat @ ( finite_card_nat @ B ) @ ( finite_card_nat @ A2 ) ) ) ) ).

% surj_card_le
thf(fact_638_surj__card__le,axiom,
    ! [A2: set_a,B: set_a,F: a > a] :
      ( ( finite_finite_a @ A2 )
     => ( ( ord_less_eq_set_a @ B @ ( image_a_a @ F @ A2 ) )
       => ( ord_less_eq_nat @ ( finite_card_a @ B ) @ ( finite_card_a @ A2 ) ) ) ) ).

% surj_card_le
thf(fact_639_surj__card__le,axiom,
    ! [A2: set_nat,B: set_a,F: nat > a] :
      ( ( finite_finite_nat @ A2 )
     => ( ( ord_less_eq_set_a @ B @ ( image_nat_a @ F @ A2 ) )
       => ( ord_less_eq_nat @ ( finite_card_a @ B ) @ ( finite_card_nat @ A2 ) ) ) ) ).

% surj_card_le
thf(fact_640_sup__inf__absorb,axiom,
    ! [X: set_a,Y: set_a] :
      ( ( sup_sup_set_a @ X @ ( inf_inf_set_a @ X @ Y ) )
      = X ) ).

% sup_inf_absorb
thf(fact_641_inf__sup__absorb,axiom,
    ! [X: set_a,Y: set_a] :
      ( ( inf_inf_set_a @ X @ ( sup_sup_set_a @ X @ Y ) )
      = X ) ).

% inf_sup_absorb
thf(fact_642_le0,axiom,
    ! [N2: nat] : ( ord_less_eq_nat @ zero_zero_nat @ N2 ) ).

% le0
thf(fact_643_bot__nat__0_Oextremum,axiom,
    ! [A: nat] : ( ord_less_eq_nat @ zero_zero_nat @ A ) ).

% bot_nat_0.extremum
thf(fact_644_psubsetI,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( ord_less_eq_set_a @ A2 @ B )
     => ( ( A2 != B )
       => ( ord_less_set_a @ A2 @ B ) ) ) ).

% psubsetI
thf(fact_645_diff__self__eq__0,axiom,
    ! [M2: nat] :
      ( ( minus_minus_nat @ M2 @ M2 )
      = zero_zero_nat ) ).

% diff_self_eq_0
thf(fact_646_diff__0__eq__0,axiom,
    ! [N2: nat] :
      ( ( minus_minus_nat @ zero_zero_nat @ N2 )
      = zero_zero_nat ) ).

% diff_0_eq_0
thf(fact_647_inf_Oidem,axiom,
    ! [A: set_a] :
      ( ( inf_inf_set_a @ A @ A )
      = A ) ).

% inf.idem
thf(fact_648_inf__idem,axiom,
    ! [X: set_a] :
      ( ( inf_inf_set_a @ X @ X )
      = X ) ).

% inf_idem
thf(fact_649_inf_Oleft__idem,axiom,
    ! [A: set_a,B4: set_a] :
      ( ( inf_inf_set_a @ A @ ( inf_inf_set_a @ A @ B4 ) )
      = ( inf_inf_set_a @ A @ B4 ) ) ).

% inf.left_idem
thf(fact_650_inf__left__idem,axiom,
    ! [X: set_a,Y: set_a] :
      ( ( inf_inf_set_a @ X @ ( inf_inf_set_a @ X @ Y ) )
      = ( inf_inf_set_a @ X @ Y ) ) ).

% inf_left_idem
thf(fact_651_inf_Oright__idem,axiom,
    ! [A: set_a,B4: set_a] :
      ( ( inf_inf_set_a @ ( inf_inf_set_a @ A @ B4 ) @ B4 )
      = ( inf_inf_set_a @ A @ B4 ) ) ).

% inf.right_idem
thf(fact_652_inf__right__idem,axiom,
    ! [X: set_a,Y: set_a] :
      ( ( inf_inf_set_a @ ( inf_inf_set_a @ X @ Y ) @ Y )
      = ( inf_inf_set_a @ X @ Y ) ) ).

% inf_right_idem
thf(fact_653_diff__diff__cancel,axiom,
    ! [I: nat,N2: nat] :
      ( ( ord_less_eq_nat @ I @ N2 )
     => ( ( minus_minus_nat @ N2 @ ( minus_minus_nat @ N2 @ I ) )
        = I ) ) ).

% diff_diff_cancel
thf(fact_654_sup_Oidem,axiom,
    ! [A: set_a] :
      ( ( sup_sup_set_a @ A @ A )
      = A ) ).

% sup.idem
thf(fact_655_sup__idem,axiom,
    ! [X: set_a] :
      ( ( sup_sup_set_a @ X @ X )
      = X ) ).

% sup_idem
thf(fact_656_sup_Oleft__idem,axiom,
    ! [A: set_a,B4: set_a] :
      ( ( sup_sup_set_a @ A @ ( sup_sup_set_a @ A @ B4 ) )
      = ( sup_sup_set_a @ A @ B4 ) ) ).

% sup.left_idem
thf(fact_657_sup__left__idem,axiom,
    ! [X: set_a,Y: set_a] :
      ( ( sup_sup_set_a @ X @ ( sup_sup_set_a @ X @ Y ) )
      = ( sup_sup_set_a @ X @ Y ) ) ).

% sup_left_idem
thf(fact_658_sup_Oright__idem,axiom,
    ! [A: set_a,B4: set_a] :
      ( ( sup_sup_set_a @ ( sup_sup_set_a @ A @ B4 ) @ B4 )
      = ( sup_sup_set_a @ A @ B4 ) ) ).

% sup.right_idem
thf(fact_659_le__zero__eq,axiom,
    ! [N2: nat] :
      ( ( ord_less_eq_nat @ N2 @ zero_zero_nat )
      = ( N2 = zero_zero_nat ) ) ).

% le_zero_eq
thf(fact_660_not__gr__zero,axiom,
    ! [N2: nat] :
      ( ( ~ ( ord_less_nat @ zero_zero_nat @ N2 ) )
      = ( N2 = zero_zero_nat ) ) ).

% not_gr_zero
thf(fact_661_zero__diff,axiom,
    ! [A: nat] :
      ( ( minus_minus_nat @ zero_zero_nat @ A )
      = zero_zero_nat ) ).

% zero_diff
thf(fact_662_diff__zero,axiom,
    ! [A: nat] :
      ( ( minus_minus_nat @ A @ zero_zero_nat )
      = A ) ).

% diff_zero
thf(fact_663_cancel__comm__monoid__add__class_Odiff__cancel,axiom,
    ! [A: nat] :
      ( ( minus_minus_nat @ A @ A )
      = zero_zero_nat ) ).

% cancel_comm_monoid_add_class.diff_cancel
thf(fact_664_le__inf__iff,axiom,
    ! [X: set_a,Y: set_a,Z: set_a] :
      ( ( ord_less_eq_set_a @ X @ ( inf_inf_set_a @ Y @ Z ) )
      = ( ( ord_less_eq_set_a @ X @ Y )
        & ( ord_less_eq_set_a @ X @ Z ) ) ) ).

% le_inf_iff
thf(fact_665_le__inf__iff,axiom,
    ! [X: nat,Y: nat,Z: nat] :
      ( ( ord_less_eq_nat @ X @ ( inf_inf_nat @ Y @ Z ) )
      = ( ( ord_less_eq_nat @ X @ Y )
        & ( ord_less_eq_nat @ X @ Z ) ) ) ).

% le_inf_iff
thf(fact_666_inf_Obounded__iff,axiom,
    ! [A: set_a,B4: set_a,C2: set_a] :
      ( ( ord_less_eq_set_a @ A @ ( inf_inf_set_a @ B4 @ C2 ) )
      = ( ( ord_less_eq_set_a @ A @ B4 )
        & ( ord_less_eq_set_a @ A @ C2 ) ) ) ).

% inf.bounded_iff
thf(fact_667_inf_Obounded__iff,axiom,
    ! [A: nat,B4: nat,C2: nat] :
      ( ( ord_less_eq_nat @ A @ ( inf_inf_nat @ B4 @ C2 ) )
      = ( ( ord_less_eq_nat @ A @ B4 )
        & ( ord_less_eq_nat @ A @ C2 ) ) ) ).

% inf.bounded_iff
thf(fact_668_le__sup__iff,axiom,
    ! [X: set_a,Y: set_a,Z: set_a] :
      ( ( ord_less_eq_set_a @ ( sup_sup_set_a @ X @ Y ) @ Z )
      = ( ( ord_less_eq_set_a @ X @ Z )
        & ( ord_less_eq_set_a @ Y @ Z ) ) ) ).

% le_sup_iff
thf(fact_669_le__sup__iff,axiom,
    ! [X: nat,Y: nat,Z: nat] :
      ( ( ord_less_eq_nat @ ( sup_sup_nat @ X @ Y ) @ Z )
      = ( ( ord_less_eq_nat @ X @ Z )
        & ( ord_less_eq_nat @ Y @ Z ) ) ) ).

% le_sup_iff
thf(fact_670_sup_Obounded__iff,axiom,
    ! [B4: set_a,C2: set_a,A: set_a] :
      ( ( ord_less_eq_set_a @ ( sup_sup_set_a @ B4 @ C2 ) @ A )
      = ( ( ord_less_eq_set_a @ B4 @ A )
        & ( ord_less_eq_set_a @ C2 @ A ) ) ) ).

% sup.bounded_iff
thf(fact_671_sup_Obounded__iff,axiom,
    ! [B4: nat,C2: nat,A: nat] :
      ( ( ord_less_eq_nat @ ( sup_sup_nat @ B4 @ C2 ) @ A )
      = ( ( ord_less_eq_nat @ B4 @ A )
        & ( ord_less_eq_nat @ C2 @ A ) ) ) ).

% sup.bounded_iff
thf(fact_672_inf__bot__left,axiom,
    ! [X: set_a] :
      ( ( inf_inf_set_a @ bot_bot_set_a @ X )
      = bot_bot_set_a ) ).

% inf_bot_left
thf(fact_673_inf__bot__right,axiom,
    ! [X: set_a] :
      ( ( inf_inf_set_a @ X @ bot_bot_set_a )
      = bot_bot_set_a ) ).

% inf_bot_right
thf(fact_674_sup__bot__left,axiom,
    ! [X: set_a] :
      ( ( sup_sup_set_a @ bot_bot_set_a @ X )
      = X ) ).

% sup_bot_left
thf(fact_675_sup__bot__right,axiom,
    ! [X: set_a] :
      ( ( sup_sup_set_a @ X @ bot_bot_set_a )
      = X ) ).

% sup_bot_right
thf(fact_676_bot__eq__sup__iff,axiom,
    ! [X: set_a,Y: set_a] :
      ( ( bot_bot_set_a
        = ( sup_sup_set_a @ X @ Y ) )
      = ( ( X = bot_bot_set_a )
        & ( Y = bot_bot_set_a ) ) ) ).

% bot_eq_sup_iff
thf(fact_677_sup__eq__bot__iff,axiom,
    ! [X: set_a,Y: set_a] :
      ( ( ( sup_sup_set_a @ X @ Y )
        = bot_bot_set_a )
      = ( ( X = bot_bot_set_a )
        & ( Y = bot_bot_set_a ) ) ) ).

% sup_eq_bot_iff
thf(fact_678_sup__bot_Oeq__neutr__iff,axiom,
    ! [A: set_a,B4: set_a] :
      ( ( ( sup_sup_set_a @ A @ B4 )
        = bot_bot_set_a )
      = ( ( A = bot_bot_set_a )
        & ( B4 = bot_bot_set_a ) ) ) ).

% sup_bot.eq_neutr_iff
thf(fact_679_sup__bot_Oleft__neutral,axiom,
    ! [A: set_a] :
      ( ( sup_sup_set_a @ bot_bot_set_a @ A )
      = A ) ).

% sup_bot.left_neutral
thf(fact_680_sup__bot_Oneutr__eq__iff,axiom,
    ! [A: set_a,B4: set_a] :
      ( ( bot_bot_set_a
        = ( sup_sup_set_a @ A @ B4 ) )
      = ( ( A = bot_bot_set_a )
        & ( B4 = bot_bot_set_a ) ) ) ).

% sup_bot.neutr_eq_iff
thf(fact_681_sup__bot_Oright__neutral,axiom,
    ! [A: set_a] :
      ( ( sup_sup_set_a @ A @ bot_bot_set_a )
      = A ) ).

% sup_bot.right_neutral
thf(fact_682_zero__less__diff,axiom,
    ! [N2: nat,M2: nat] :
      ( ( ord_less_nat @ zero_zero_nat @ ( minus_minus_nat @ N2 @ M2 ) )
      = ( ord_less_nat @ M2 @ N2 ) ) ).

% zero_less_diff
thf(fact_683_bot__nat__0_Onot__eq__extremum,axiom,
    ! [A: nat] :
      ( ( A != zero_zero_nat )
      = ( ord_less_nat @ zero_zero_nat @ A ) ) ).

% bot_nat_0.not_eq_extremum
thf(fact_684_neq0__conv,axiom,
    ! [N2: nat] :
      ( ( N2 != zero_zero_nat )
      = ( ord_less_nat @ zero_zero_nat @ N2 ) ) ).

% neq0_conv
thf(fact_685_less__nat__zero__code,axiom,
    ! [N2: nat] :
      ~ ( ord_less_nat @ N2 @ zero_zero_nat ) ).

% less_nat_zero_code
thf(fact_686_diff__is__0__eq,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ( minus_minus_nat @ M2 @ N2 )
        = zero_zero_nat )
      = ( ord_less_eq_nat @ M2 @ N2 ) ) ).

% diff_is_0_eq
thf(fact_687_diff__is__0__eq_H,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_eq_nat @ M2 @ N2 )
     => ( ( minus_minus_nat @ M2 @ N2 )
        = zero_zero_nat ) ) ).

% diff_is_0_eq'
thf(fact_688_eq__diff__iff,axiom,
    ! [K: nat,M2: nat,N2: nat] :
      ( ( ord_less_eq_nat @ K @ M2 )
     => ( ( ord_less_eq_nat @ K @ N2 )
       => ( ( ( minus_minus_nat @ M2 @ K )
            = ( minus_minus_nat @ N2 @ K ) )
          = ( M2 = N2 ) ) ) ) ).

% eq_diff_iff
thf(fact_689_le__diff__iff,axiom,
    ! [K: nat,M2: nat,N2: nat] :
      ( ( ord_less_eq_nat @ K @ M2 )
     => ( ( ord_less_eq_nat @ K @ N2 )
       => ( ( ord_less_eq_nat @ ( minus_minus_nat @ M2 @ K ) @ ( minus_minus_nat @ N2 @ K ) )
          = ( ord_less_eq_nat @ M2 @ N2 ) ) ) ) ).

% le_diff_iff
thf(fact_690_Nat_Odiff__diff__eq,axiom,
    ! [K: nat,M2: nat,N2: nat] :
      ( ( ord_less_eq_nat @ K @ M2 )
     => ( ( ord_less_eq_nat @ K @ N2 )
       => ( ( minus_minus_nat @ ( minus_minus_nat @ M2 @ K ) @ ( minus_minus_nat @ N2 @ K ) )
          = ( minus_minus_nat @ M2 @ N2 ) ) ) ) ).

% Nat.diff_diff_eq
thf(fact_691_diff__le__mono,axiom,
    ! [M2: nat,N2: nat,L: nat] :
      ( ( ord_less_eq_nat @ M2 @ N2 )
     => ( ord_less_eq_nat @ ( minus_minus_nat @ M2 @ L ) @ ( minus_minus_nat @ N2 @ L ) ) ) ).

% diff_le_mono
thf(fact_692_diff__le__self,axiom,
    ! [M2: nat,N2: nat] : ( ord_less_eq_nat @ ( minus_minus_nat @ M2 @ N2 ) @ M2 ) ).

% diff_le_self
thf(fact_693_le__diff__iff_H,axiom,
    ! [A: nat,C2: nat,B4: nat] :
      ( ( ord_less_eq_nat @ A @ C2 )
     => ( ( ord_less_eq_nat @ B4 @ C2 )
       => ( ( ord_less_eq_nat @ ( minus_minus_nat @ C2 @ A ) @ ( minus_minus_nat @ C2 @ B4 ) )
          = ( ord_less_eq_nat @ B4 @ A ) ) ) ) ).

% le_diff_iff'
thf(fact_694_diff__le__mono2,axiom,
    ! [M2: nat,N2: nat,L: nat] :
      ( ( ord_less_eq_nat @ M2 @ N2 )
     => ( ord_less_eq_nat @ ( minus_minus_nat @ L @ N2 ) @ ( minus_minus_nat @ L @ M2 ) ) ) ).

% diff_le_mono2
thf(fact_695_minus__nat_Odiff__0,axiom,
    ! [M2: nat] :
      ( ( minus_minus_nat @ M2 @ zero_zero_nat )
      = M2 ) ).

% minus_nat.diff_0
thf(fact_696_diffs0__imp__equal,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ( minus_minus_nat @ M2 @ N2 )
        = zero_zero_nat )
     => ( ( ( minus_minus_nat @ N2 @ M2 )
          = zero_zero_nat )
       => ( M2 = N2 ) ) ) ).

% diffs0_imp_equal
thf(fact_697_less__imp__diff__less,axiom,
    ! [J: nat,K: nat,N2: nat] :
      ( ( ord_less_nat @ J @ K )
     => ( ord_less_nat @ ( minus_minus_nat @ J @ N2 ) @ K ) ) ).

% less_imp_diff_less
thf(fact_698_diff__less__mono2,axiom,
    ! [M2: nat,N2: nat,L: nat] :
      ( ( ord_less_nat @ M2 @ N2 )
     => ( ( ord_less_nat @ M2 @ L )
       => ( ord_less_nat @ ( minus_minus_nat @ L @ N2 ) @ ( minus_minus_nat @ L @ M2 ) ) ) ) ).

% diff_less_mono2
thf(fact_699_not__psubset__empty,axiom,
    ! [A2: set_a] :
      ~ ( ord_less_set_a @ A2 @ bot_bot_set_a ) ).

% not_psubset_empty
thf(fact_700_finite__psubset__induct,axiom,
    ! [A2: set_a,P: set_a > $o] :
      ( ( finite_finite_a @ A2 )
     => ( ! [A8: set_a] :
            ( ( finite_finite_a @ A8 )
           => ( ! [B9: set_a] :
                  ( ( ord_less_set_a @ B9 @ A8 )
                 => ( P @ B9 ) )
             => ( P @ A8 ) ) )
       => ( P @ A2 ) ) ) ).

% finite_psubset_induct
thf(fact_701_finite__psubset__induct,axiom,
    ! [A2: set_nat,P: set_nat > $o] :
      ( ( finite_finite_nat @ A2 )
     => ( ! [A8: set_nat] :
            ( ( finite_finite_nat @ A8 )
           => ( ! [B9: set_nat] :
                  ( ( ord_less_set_nat @ B9 @ A8 )
                 => ( P @ B9 ) )
             => ( P @ A8 ) ) )
       => ( P @ A2 ) ) ) ).

% finite_psubset_induct
thf(fact_702_psubsetE,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( ord_less_set_a @ A2 @ B )
     => ~ ( ( ord_less_eq_set_a @ A2 @ B )
         => ( ord_less_eq_set_a @ B @ A2 ) ) ) ).

% psubsetE
thf(fact_703_psubset__eq,axiom,
    ( ord_less_set_a
    = ( ^ [A6: set_a,B6: set_a] :
          ( ( ord_less_eq_set_a @ A6 @ B6 )
          & ( A6 != B6 ) ) ) ) ).

% psubset_eq
thf(fact_704_psubset__imp__subset,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( ord_less_set_a @ A2 @ B )
     => ( ord_less_eq_set_a @ A2 @ B ) ) ).

% psubset_imp_subset
thf(fact_705_psubset__subset__trans,axiom,
    ! [A2: set_a,B: set_a,C: set_a] :
      ( ( ord_less_set_a @ A2 @ B )
     => ( ( ord_less_eq_set_a @ B @ C )
       => ( ord_less_set_a @ A2 @ C ) ) ) ).

% psubset_subset_trans
thf(fact_706_subset__not__subset__eq,axiom,
    ( ord_less_set_a
    = ( ^ [A6: set_a,B6: set_a] :
          ( ( ord_less_eq_set_a @ A6 @ B6 )
          & ~ ( ord_less_eq_set_a @ B6 @ A6 ) ) ) ) ).

% subset_not_subset_eq
thf(fact_707_subset__psubset__trans,axiom,
    ! [A2: set_a,B: set_a,C: set_a] :
      ( ( ord_less_eq_set_a @ A2 @ B )
     => ( ( ord_less_set_a @ B @ C )
       => ( ord_less_set_a @ A2 @ C ) ) ) ).

% subset_psubset_trans
thf(fact_708_subset__iff__psubset__eq,axiom,
    ( ord_less_eq_set_a
    = ( ^ [A6: set_a,B6: set_a] :
          ( ( ord_less_set_a @ A6 @ B6 )
          | ( A6 = B6 ) ) ) ) ).

% subset_iff_psubset_eq
thf(fact_709_psubset__imp__ex__mem,axiom,
    ! [A2: set_nat,B: set_nat] :
      ( ( ord_less_set_nat @ A2 @ B )
     => ? [B2: nat] : ( member_nat @ B2 @ ( minus_minus_set_nat @ B @ A2 ) ) ) ).

% psubset_imp_ex_mem
thf(fact_710_psubset__imp__ex__mem,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( ord_less_set_a @ A2 @ B )
     => ? [B2: a] : ( member_a @ B2 @ ( minus_minus_set_a @ B @ A2 ) ) ) ).

% psubset_imp_ex_mem
thf(fact_711_diff__less,axiom,
    ! [N2: nat,M2: nat] :
      ( ( ord_less_nat @ zero_zero_nat @ N2 )
     => ( ( ord_less_nat @ zero_zero_nat @ M2 )
       => ( ord_less_nat @ ( minus_minus_nat @ M2 @ N2 ) @ M2 ) ) ) ).

% diff_less
thf(fact_712_diff__less__mono,axiom,
    ! [A: nat,B4: nat,C2: nat] :
      ( ( ord_less_nat @ A @ B4 )
     => ( ( ord_less_eq_nat @ C2 @ A )
       => ( ord_less_nat @ ( minus_minus_nat @ A @ C2 ) @ ( minus_minus_nat @ B4 @ C2 ) ) ) ) ).

% diff_less_mono
thf(fact_713_less__diff__iff,axiom,
    ! [K: nat,M2: nat,N2: nat] :
      ( ( ord_less_eq_nat @ K @ M2 )
     => ( ( ord_less_eq_nat @ K @ N2 )
       => ( ( ord_less_nat @ ( minus_minus_nat @ M2 @ K ) @ ( minus_minus_nat @ N2 @ K ) )
          = ( ord_less_nat @ M2 @ N2 ) ) ) ) ).

% less_diff_iff
thf(fact_714_zero__reorient,axiom,
    ! [X: nat] :
      ( ( zero_zero_nat = X )
      = ( X = zero_zero_nat ) ) ).

% zero_reorient
thf(fact_715_psubset__card__mono,axiom,
    ! [B: set_a,A2: set_a] :
      ( ( finite_finite_a @ B )
     => ( ( ord_less_set_a @ A2 @ B )
       => ( ord_less_nat @ ( finite_card_a @ A2 ) @ ( finite_card_a @ B ) ) ) ) ).

% psubset_card_mono
thf(fact_716_psubset__card__mono,axiom,
    ! [B: set_nat,A2: set_nat] :
      ( ( finite_finite_nat @ B )
     => ( ( ord_less_set_nat @ A2 @ B )
       => ( ord_less_nat @ ( finite_card_nat @ A2 ) @ ( finite_card_nat @ B ) ) ) ) ).

% psubset_card_mono
thf(fact_717_diff__right__commute,axiom,
    ! [A: nat,C2: nat,B4: nat] :
      ( ( minus_minus_nat @ ( minus_minus_nat @ A @ C2 ) @ B4 )
      = ( minus_minus_nat @ ( minus_minus_nat @ A @ B4 ) @ C2 ) ) ).

% diff_right_commute
thf(fact_718_inf__sup__aci_I4_J,axiom,
    ! [X: set_a,Y: set_a] :
      ( ( inf_inf_set_a @ X @ ( inf_inf_set_a @ X @ Y ) )
      = ( inf_inf_set_a @ X @ Y ) ) ).

% inf_sup_aci(4)
thf(fact_719_inf__sup__aci_I3_J,axiom,
    ! [X: set_a,Y: set_a,Z: set_a] :
      ( ( inf_inf_set_a @ X @ ( inf_inf_set_a @ Y @ Z ) )
      = ( inf_inf_set_a @ Y @ ( inf_inf_set_a @ X @ Z ) ) ) ).

% inf_sup_aci(3)
thf(fact_720_inf__sup__aci_I2_J,axiom,
    ! [X: set_a,Y: set_a,Z: set_a] :
      ( ( inf_inf_set_a @ ( inf_inf_set_a @ X @ Y ) @ Z )
      = ( inf_inf_set_a @ X @ ( inf_inf_set_a @ Y @ Z ) ) ) ).

% inf_sup_aci(2)
thf(fact_721_inf__sup__aci_I1_J,axiom,
    ( inf_inf_set_a
    = ( ^ [X2: set_a,Y3: set_a] : ( inf_inf_set_a @ Y3 @ X2 ) ) ) ).

% inf_sup_aci(1)
thf(fact_722_inf_Oassoc,axiom,
    ! [A: set_a,B4: set_a,C2: set_a] :
      ( ( inf_inf_set_a @ ( inf_inf_set_a @ A @ B4 ) @ C2 )
      = ( inf_inf_set_a @ A @ ( inf_inf_set_a @ B4 @ C2 ) ) ) ).

% inf.assoc
thf(fact_723_inf__assoc,axiom,
    ! [X: set_a,Y: set_a,Z: set_a] :
      ( ( inf_inf_set_a @ ( inf_inf_set_a @ X @ Y ) @ Z )
      = ( inf_inf_set_a @ X @ ( inf_inf_set_a @ Y @ Z ) ) ) ).

% inf_assoc
thf(fact_724_inf_Ocommute,axiom,
    ( inf_inf_set_a
    = ( ^ [A4: set_a,B3: set_a] : ( inf_inf_set_a @ B3 @ A4 ) ) ) ).

% inf.commute
thf(fact_725_inf__commute,axiom,
    ( inf_inf_set_a
    = ( ^ [X2: set_a,Y3: set_a] : ( inf_inf_set_a @ Y3 @ X2 ) ) ) ).

% inf_commute
thf(fact_726_inf_Oleft__commute,axiom,
    ! [B4: set_a,A: set_a,C2: set_a] :
      ( ( inf_inf_set_a @ B4 @ ( inf_inf_set_a @ A @ C2 ) )
      = ( inf_inf_set_a @ A @ ( inf_inf_set_a @ B4 @ C2 ) ) ) ).

% inf.left_commute
thf(fact_727_inf__left__commute,axiom,
    ! [X: set_a,Y: set_a,Z: set_a] :
      ( ( inf_inf_set_a @ X @ ( inf_inf_set_a @ Y @ Z ) )
      = ( inf_inf_set_a @ Y @ ( inf_inf_set_a @ X @ Z ) ) ) ).

% inf_left_commute
thf(fact_728_nat__neq__iff,axiom,
    ! [M2: nat,N2: nat] :
      ( ( M2 != N2 )
      = ( ( ord_less_nat @ M2 @ N2 )
        | ( ord_less_nat @ N2 @ M2 ) ) ) ).

% nat_neq_iff
thf(fact_729_less__not__refl,axiom,
    ! [N2: nat] :
      ~ ( ord_less_nat @ N2 @ N2 ) ).

% less_not_refl
thf(fact_730_less__not__refl2,axiom,
    ! [N2: nat,M2: nat] :
      ( ( ord_less_nat @ N2 @ M2 )
     => ( M2 != N2 ) ) ).

% less_not_refl2
thf(fact_731_less__not__refl3,axiom,
    ! [S2: nat,T4: nat] :
      ( ( ord_less_nat @ S2 @ T4 )
     => ( S2 != T4 ) ) ).

% less_not_refl3
thf(fact_732_less__irrefl__nat,axiom,
    ! [N2: nat] :
      ~ ( ord_less_nat @ N2 @ N2 ) ).

% less_irrefl_nat
thf(fact_733_nat__less__induct,axiom,
    ! [P: nat > $o,N2: nat] :
      ( ! [N3: nat] :
          ( ! [M3: nat] :
              ( ( ord_less_nat @ M3 @ N3 )
             => ( P @ M3 ) )
         => ( P @ N3 ) )
     => ( P @ N2 ) ) ).

% nat_less_induct
thf(fact_734_infinite__descent,axiom,
    ! [P: nat > $o,N2: nat] :
      ( ! [N3: nat] :
          ( ~ ( P @ N3 )
         => ? [M3: nat] :
              ( ( ord_less_nat @ M3 @ N3 )
              & ~ ( P @ M3 ) ) )
     => ( P @ N2 ) ) ).

% infinite_descent
thf(fact_735_linorder__neqE__nat,axiom,
    ! [X: nat,Y: nat] :
      ( ( X != Y )
     => ( ~ ( ord_less_nat @ X @ Y )
       => ( ord_less_nat @ Y @ X ) ) ) ).

% linorder_neqE_nat
thf(fact_736_le__refl,axiom,
    ! [N2: nat] : ( ord_less_eq_nat @ N2 @ N2 ) ).

% le_refl
thf(fact_737_le__trans,axiom,
    ! [I: nat,J: nat,K: nat] :
      ( ( ord_less_eq_nat @ I @ J )
     => ( ( ord_less_eq_nat @ J @ K )
       => ( ord_less_eq_nat @ I @ K ) ) ) ).

% le_trans
thf(fact_738_eq__imp__le,axiom,
    ! [M2: nat,N2: nat] :
      ( ( M2 = N2 )
     => ( ord_less_eq_nat @ M2 @ N2 ) ) ).

% eq_imp_le
thf(fact_739_le__antisym,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_eq_nat @ M2 @ N2 )
     => ( ( ord_less_eq_nat @ N2 @ M2 )
       => ( M2 = N2 ) ) ) ).

% le_antisym
thf(fact_740_nat__le__linear,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_eq_nat @ M2 @ N2 )
      | ( ord_less_eq_nat @ N2 @ M2 ) ) ).

% nat_le_linear
thf(fact_741_Nat_Oex__has__greatest__nat,axiom,
    ! [P: nat > $o,K: nat,B4: nat] :
      ( ( P @ K )
     => ( ! [Y2: nat] :
            ( ( P @ Y2 )
           => ( ord_less_eq_nat @ Y2 @ B4 ) )
       => ? [X3: nat] :
            ( ( P @ X3 )
            & ! [Y5: nat] :
                ( ( P @ Y5 )
               => ( ord_less_eq_nat @ Y5 @ X3 ) ) ) ) ) ).

% Nat.ex_has_greatest_nat
thf(fact_742_inf__sup__aci_I8_J,axiom,
    ! [X: set_a,Y: set_a] :
      ( ( sup_sup_set_a @ X @ ( sup_sup_set_a @ X @ Y ) )
      = ( sup_sup_set_a @ X @ Y ) ) ).

% inf_sup_aci(8)
thf(fact_743_inf__sup__aci_I7_J,axiom,
    ! [X: set_a,Y: set_a,Z: set_a] :
      ( ( sup_sup_set_a @ X @ ( sup_sup_set_a @ Y @ Z ) )
      = ( sup_sup_set_a @ Y @ ( sup_sup_set_a @ X @ Z ) ) ) ).

% inf_sup_aci(7)
thf(fact_744_inf__sup__aci_I6_J,axiom,
    ! [X: set_a,Y: set_a,Z: set_a] :
      ( ( sup_sup_set_a @ ( sup_sup_set_a @ X @ Y ) @ Z )
      = ( sup_sup_set_a @ X @ ( sup_sup_set_a @ Y @ Z ) ) ) ).

% inf_sup_aci(6)
thf(fact_745_inf__sup__aci_I5_J,axiom,
    ( sup_sup_set_a
    = ( ^ [X2: set_a,Y3: set_a] : ( sup_sup_set_a @ Y3 @ X2 ) ) ) ).

% inf_sup_aci(5)
thf(fact_746_sup_Oassoc,axiom,
    ! [A: set_a,B4: set_a,C2: set_a] :
      ( ( sup_sup_set_a @ ( sup_sup_set_a @ A @ B4 ) @ C2 )
      = ( sup_sup_set_a @ A @ ( sup_sup_set_a @ B4 @ C2 ) ) ) ).

% sup.assoc
thf(fact_747_sup__assoc,axiom,
    ! [X: set_a,Y: set_a,Z: set_a] :
      ( ( sup_sup_set_a @ ( sup_sup_set_a @ X @ Y ) @ Z )
      = ( sup_sup_set_a @ X @ ( sup_sup_set_a @ Y @ Z ) ) ) ).

% sup_assoc
thf(fact_748_sup_Ocommute,axiom,
    ( sup_sup_set_a
    = ( ^ [A4: set_a,B3: set_a] : ( sup_sup_set_a @ B3 @ A4 ) ) ) ).

% sup.commute
thf(fact_749_sup__commute,axiom,
    ( sup_sup_set_a
    = ( ^ [X2: set_a,Y3: set_a] : ( sup_sup_set_a @ Y3 @ X2 ) ) ) ).

% sup_commute
thf(fact_750_sup_Oleft__commute,axiom,
    ! [B4: set_a,A: set_a,C2: set_a] :
      ( ( sup_sup_set_a @ B4 @ ( sup_sup_set_a @ A @ C2 ) )
      = ( sup_sup_set_a @ A @ ( sup_sup_set_a @ B4 @ C2 ) ) ) ).

% sup.left_commute
thf(fact_751_sup__left__commute,axiom,
    ! [X: set_a,Y: set_a,Z: set_a] :
      ( ( sup_sup_set_a @ X @ ( sup_sup_set_a @ Y @ Z ) )
      = ( sup_sup_set_a @ Y @ ( sup_sup_set_a @ X @ Z ) ) ) ).

% sup_left_commute
thf(fact_752_card__Diff__subset,axiom,
    ! [B: set_nat,A2: set_nat] :
      ( ( finite_finite_nat @ B )
     => ( ( ord_less_eq_set_nat @ B @ A2 )
       => ( ( finite_card_nat @ ( minus_minus_set_nat @ A2 @ B ) )
          = ( minus_minus_nat @ ( finite_card_nat @ A2 ) @ ( finite_card_nat @ B ) ) ) ) ) ).

% card_Diff_subset
thf(fact_753_card__Diff__subset,axiom,
    ! [B: set_a,A2: set_a] :
      ( ( finite_finite_a @ B )
     => ( ( ord_less_eq_set_a @ B @ A2 )
       => ( ( finite_card_a @ ( minus_minus_set_a @ A2 @ B ) )
          = ( minus_minus_nat @ ( finite_card_a @ A2 ) @ ( finite_card_a @ B ) ) ) ) ) ).

% card_Diff_subset
thf(fact_754_diff__card__le__card__Diff,axiom,
    ! [B: set_nat,A2: set_nat] :
      ( ( finite_finite_nat @ B )
     => ( ord_less_eq_nat @ ( minus_minus_nat @ ( finite_card_nat @ A2 ) @ ( finite_card_nat @ B ) ) @ ( finite_card_nat @ ( minus_minus_set_nat @ A2 @ B ) ) ) ) ).

% diff_card_le_card_Diff
thf(fact_755_diff__card__le__card__Diff,axiom,
    ! [B: set_a,A2: set_a] :
      ( ( finite_finite_a @ B )
     => ( ord_less_eq_nat @ ( minus_minus_nat @ ( finite_card_a @ A2 ) @ ( finite_card_a @ B ) ) @ ( finite_card_a @ ( minus_minus_set_a @ A2 @ B ) ) ) ) ).

% diff_card_le_card_Diff
thf(fact_756_finite__induct__select,axiom,
    ! [S: set_nat,P: set_nat > $o] :
      ( ( finite_finite_nat @ S )
     => ( ( P @ bot_bot_set_nat )
       => ( ! [T3: set_nat] :
              ( ( ord_less_set_nat @ T3 @ S )
             => ( ( P @ T3 )
               => ? [X4: nat] :
                    ( ( member_nat @ X4 @ ( minus_minus_set_nat @ S @ T3 ) )
                    & ( P @ ( insert_nat @ X4 @ T3 ) ) ) ) )
         => ( P @ S ) ) ) ) ).

% finite_induct_select
thf(fact_757_finite__induct__select,axiom,
    ! [S: set_a,P: set_a > $o] :
      ( ( finite_finite_a @ S )
     => ( ( P @ bot_bot_set_a )
       => ( ! [T3: set_a] :
              ( ( ord_less_set_a @ T3 @ S )
             => ( ( P @ T3 )
               => ? [X4: a] :
                    ( ( member_a @ X4 @ ( minus_minus_set_a @ S @ T3 ) )
                    & ( P @ ( insert_a @ X4 @ T3 ) ) ) ) )
         => ( P @ S ) ) ) ) ).

% finite_induct_select
thf(fact_758_psubset__insert__iff,axiom,
    ! [A2: set_nat,X: nat,B: set_nat] :
      ( ( ord_less_set_nat @ A2 @ ( insert_nat @ X @ B ) )
      = ( ( ( member_nat @ X @ B )
         => ( ord_less_set_nat @ A2 @ B ) )
        & ( ~ ( member_nat @ X @ B )
         => ( ( ( member_nat @ X @ A2 )
             => ( ord_less_set_nat @ ( minus_minus_set_nat @ A2 @ ( insert_nat @ X @ bot_bot_set_nat ) ) @ B ) )
            & ( ~ ( member_nat @ X @ A2 )
             => ( ord_less_eq_set_nat @ A2 @ B ) ) ) ) ) ) ).

% psubset_insert_iff
thf(fact_759_psubset__insert__iff,axiom,
    ! [A2: set_a,X: a,B: set_a] :
      ( ( ord_less_set_a @ A2 @ ( insert_a @ X @ B ) )
      = ( ( ( member_a @ X @ B )
         => ( ord_less_set_a @ A2 @ B ) )
        & ( ~ ( member_a @ X @ B )
         => ( ( ( member_a @ X @ A2 )
             => ( ord_less_set_a @ ( minus_minus_set_a @ A2 @ ( insert_a @ X @ bot_bot_set_a ) ) @ B ) )
            & ( ~ ( member_a @ X @ A2 )
             => ( ord_less_eq_set_a @ A2 @ B ) ) ) ) ) ) ).

% psubset_insert_iff
thf(fact_760_card__psubset,axiom,
    ! [B: set_nat,A2: set_nat] :
      ( ( finite_finite_nat @ B )
     => ( ( ord_less_eq_set_nat @ A2 @ B )
       => ( ( ord_less_nat @ ( finite_card_nat @ A2 ) @ ( finite_card_nat @ B ) )
         => ( ord_less_set_nat @ A2 @ B ) ) ) ) ).

% card_psubset
thf(fact_761_card__psubset,axiom,
    ! [B: set_a,A2: set_a] :
      ( ( finite_finite_a @ B )
     => ( ( ord_less_eq_set_a @ A2 @ B )
       => ( ( ord_less_nat @ ( finite_card_a @ A2 ) @ ( finite_card_a @ B ) )
         => ( ord_less_set_a @ A2 @ B ) ) ) ) ).

% card_psubset
thf(fact_762_card__Diff__subset__Int,axiom,
    ! [A2: set_nat,B: set_nat] :
      ( ( finite_finite_nat @ ( inf_inf_set_nat @ A2 @ B ) )
     => ( ( finite_card_nat @ ( minus_minus_set_nat @ A2 @ B ) )
        = ( minus_minus_nat @ ( finite_card_nat @ A2 ) @ ( finite_card_nat @ ( inf_inf_set_nat @ A2 @ B ) ) ) ) ) ).

% card_Diff_subset_Int
thf(fact_763_card__Diff__subset__Int,axiom,
    ! [A2: set_a,B: set_a] :
      ( ( finite_finite_a @ ( inf_inf_set_a @ A2 @ B ) )
     => ( ( finite_card_a @ ( minus_minus_set_a @ A2 @ B ) )
        = ( minus_minus_nat @ ( finite_card_a @ A2 ) @ ( finite_card_a @ ( inf_inf_set_a @ A2 @ B ) ) ) ) ) ).

% card_Diff_subset_Int
thf(fact_764_zero__le,axiom,
    ! [X: nat] : ( ord_less_eq_nat @ zero_zero_nat @ X ) ).

% zero_le
thf(fact_765_zero__less__iff__neq__zero,axiom,
    ! [N2: nat] :
      ( ( ord_less_nat @ zero_zero_nat @ N2 )
      = ( N2 != zero_zero_nat ) ) ).

% zero_less_iff_neq_zero
thf(fact_766_gr__implies__not__zero,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_nat @ M2 @ N2 )
     => ( N2 != zero_zero_nat ) ) ).

% gr_implies_not_zero
thf(fact_767_not__less__zero,axiom,
    ! [N2: nat] :
      ~ ( ord_less_nat @ N2 @ zero_zero_nat ) ).

% not_less_zero
thf(fact_768_gr__zeroI,axiom,
    ! [N2: nat] :
      ( ( N2 != zero_zero_nat )
     => ( ord_less_nat @ zero_zero_nat @ N2 ) ) ).

% gr_zeroI
thf(fact_769_inf__sup__ord_I2_J,axiom,
    ! [X: set_a,Y: set_a] : ( ord_less_eq_set_a @ ( inf_inf_set_a @ X @ Y ) @ Y ) ).

% inf_sup_ord(2)
thf(fact_770_inf__sup__ord_I2_J,axiom,
    ! [X: nat,Y: nat] : ( ord_less_eq_nat @ ( inf_inf_nat @ X @ Y ) @ Y ) ).

% inf_sup_ord(2)
thf(fact_771_inf__sup__ord_I1_J,axiom,
    ! [X: set_a,Y: set_a] : ( ord_less_eq_set_a @ ( inf_inf_set_a @ X @ Y ) @ X ) ).

% inf_sup_ord(1)
thf(fact_772_inf__sup__ord_I1_J,axiom,
    ! [X: nat,Y: nat] : ( ord_less_eq_nat @ ( inf_inf_nat @ X @ Y ) @ X ) ).

% inf_sup_ord(1)
thf(fact_773_inf__le1,axiom,
    ! [X: set_a,Y: set_a] : ( ord_less_eq_set_a @ ( inf_inf_set_a @ X @ Y ) @ X ) ).

% inf_le1
thf(fact_774_inf__le1,axiom,
    ! [X: nat,Y: nat] : ( ord_less_eq_nat @ ( inf_inf_nat @ X @ Y ) @ X ) ).

% inf_le1
thf(fact_775_inf__le2,axiom,
    ! [X: set_a,Y: set_a] : ( ord_less_eq_set_a @ ( inf_inf_set_a @ X @ Y ) @ Y ) ).

% inf_le2
thf(fact_776_inf__le2,axiom,
    ! [X: nat,Y: nat] : ( ord_less_eq_nat @ ( inf_inf_nat @ X @ Y ) @ Y ) ).

% inf_le2
thf(fact_777_le__infE,axiom,
    ! [X: set_a,A: set_a,B4: set_a] :
      ( ( ord_less_eq_set_a @ X @ ( inf_inf_set_a @ A @ B4 ) )
     => ~ ( ( ord_less_eq_set_a @ X @ A )
         => ~ ( ord_less_eq_set_a @ X @ B4 ) ) ) ).

% le_infE
thf(fact_778_le__infE,axiom,
    ! [X: nat,A: nat,B4: nat] :
      ( ( ord_less_eq_nat @ X @ ( inf_inf_nat @ A @ B4 ) )
     => ~ ( ( ord_less_eq_nat @ X @ A )
         => ~ ( ord_less_eq_nat @ X @ B4 ) ) ) ).

% le_infE
thf(fact_779_le__infI,axiom,
    ! [X: set_a,A: set_a,B4: set_a] :
      ( ( ord_less_eq_set_a @ X @ A )
     => ( ( ord_less_eq_set_a @ X @ B4 )
       => ( ord_less_eq_set_a @ X @ ( inf_inf_set_a @ A @ B4 ) ) ) ) ).

% le_infI
thf(fact_780_le__infI,axiom,
    ! [X: nat,A: nat,B4: nat] :
      ( ( ord_less_eq_nat @ X @ A )
     => ( ( ord_less_eq_nat @ X @ B4 )
       => ( ord_less_eq_nat @ X @ ( inf_inf_nat @ A @ B4 ) ) ) ) ).

% le_infI
thf(fact_781_inf__mono,axiom,
    ! [A: set_a,C2: set_a,B4: set_a,D: set_a] :
      ( ( ord_less_eq_set_a @ A @ C2 )
     => ( ( ord_less_eq_set_a @ B4 @ D )
       => ( ord_less_eq_set_a @ ( inf_inf_set_a @ A @ B4 ) @ ( inf_inf_set_a @ C2 @ D ) ) ) ) ).

% inf_mono
thf(fact_782_inf__mono,axiom,
    ! [A: nat,C2: nat,B4: nat,D: nat] :
      ( ( ord_less_eq_nat @ A @ C2 )
     => ( ( ord_less_eq_nat @ B4 @ D )
       => ( ord_less_eq_nat @ ( inf_inf_nat @ A @ B4 ) @ ( inf_inf_nat @ C2 @ D ) ) ) ) ).

% inf_mono
thf(fact_783_le__infI1,axiom,
    ! [A: set_a,X: set_a,B4: set_a] :
      ( ( ord_less_eq_set_a @ A @ X )
     => ( ord_less_eq_set_a @ ( inf_inf_set_a @ A @ B4 ) @ X ) ) ).

% le_infI1
thf(fact_784_le__infI1,axiom,
    ! [A: nat,X: nat,B4: nat] :
      ( ( ord_less_eq_nat @ A @ X )
     => ( ord_less_eq_nat @ ( inf_inf_nat @ A @ B4 ) @ X ) ) ).

% le_infI1
thf(fact_785_le__infI2,axiom,
    ! [B4: set_a,X: set_a,A: set_a] :
      ( ( ord_less_eq_set_a @ B4 @ X )
     => ( ord_less_eq_set_a @ ( inf_inf_set_a @ A @ B4 ) @ X ) ) ).

% le_infI2
thf(fact_786_le__infI2,axiom,
    ! [B4: nat,X: nat,A: nat] :
      ( ( ord_less_eq_nat @ B4 @ X )
     => ( ord_less_eq_nat @ ( inf_inf_nat @ A @ B4 ) @ X ) ) ).

% le_infI2
thf(fact_787_inf_OorderE,axiom,
    ! [A: set_a,B4: set_a] :
      ( ( ord_less_eq_set_a @ A @ B4 )
     => ( A
        = ( inf_inf_set_a @ A @ B4 ) ) ) ).

% inf.orderE
thf(fact_788_inf_OorderE,axiom,
    ! [A: nat,B4: nat] :
      ( ( ord_less_eq_nat @ A @ B4 )
     => ( A
        = ( inf_inf_nat @ A @ B4 ) ) ) ).

% inf.orderE
thf(fact_789_inf_OorderI,axiom,
    ! [A: set_a,B4: set_a] :
      ( ( A
        = ( inf_inf_set_a @ A @ B4 ) )
     => ( ord_less_eq_set_a @ A @ B4 ) ) ).

% inf.orderI
thf(fact_790_inf_OorderI,axiom,
    ! [A: nat,B4: nat] :
      ( ( A
        = ( inf_inf_nat @ A @ B4 ) )
     => ( ord_less_eq_nat @ A @ B4 ) ) ).

% inf.orderI
thf(fact_791_inf__unique,axiom,
    ! [F: set_a > set_a > set_a,X: set_a,Y: set_a] :
      ( ! [X3: set_a,Y2: set_a] : ( ord_less_eq_set_a @ ( F @ X3 @ Y2 ) @ X3 )
     => ( ! [X3: set_a,Y2: set_a] : ( ord_less_eq_set_a @ ( F @ X3 @ Y2 ) @ Y2 )
       => ( ! [X3: set_a,Y2: set_a,Z3: set_a] :
              ( ( ord_less_eq_set_a @ X3 @ Y2 )
             => ( ( ord_less_eq_set_a @ X3 @ Z3 )
               => ( ord_less_eq_set_a @ X3 @ ( F @ Y2 @ Z3 ) ) ) )
         => ( ( inf_inf_set_a @ X @ Y )
            = ( F @ X @ Y ) ) ) ) ) ).

% inf_unique
thf(fact_792_inf__unique,axiom,
    ! [F: nat > nat > nat,X: nat,Y: nat] :
      ( ! [X3: nat,Y2: nat] : ( ord_less_eq_nat @ ( F @ X3 @ Y2 ) @ X3 )
     => ( ! [X3: nat,Y2: nat] : ( ord_less_eq_nat @ ( F @ X3 @ Y2 ) @ Y2 )
       => ( ! [X3: nat,Y2: nat,Z3: nat] :
              ( ( ord_less_eq_nat @ X3 @ Y2 )
             => ( ( ord_less_eq_nat @ X3 @ Z3 )
               => ( ord_less_eq_nat @ X3 @ ( F @ Y2 @ Z3 ) ) ) )
         => ( ( inf_inf_nat @ X @ Y )
            = ( F @ X @ Y ) ) ) ) ) ).

% inf_unique
thf(fact_793_le__iff__inf,axiom,
    ( ord_less_eq_set_a
    = ( ^ [X2: set_a,Y3: set_a] :
          ( ( inf_inf_set_a @ X2 @ Y3 )
          = X2 ) ) ) ).

% le_iff_inf
thf(fact_794_le__iff__inf,axiom,
    ( ord_less_eq_nat
    = ( ^ [X2: nat,Y3: nat] :
          ( ( inf_inf_nat @ X2 @ Y3 )
          = X2 ) ) ) ).

% le_iff_inf
thf(fact_795_inf_Oabsorb1,axiom,
    ! [A: set_a,B4: set_a] :
      ( ( ord_less_eq_set_a @ A @ B4 )
     => ( ( inf_inf_set_a @ A @ B4 )
        = A ) ) ).

% inf.absorb1
thf(fact_796_inf_Oabsorb1,axiom,
    ! [A: nat,B4: nat] :
      ( ( ord_less_eq_nat @ A @ B4 )
     => ( ( inf_inf_nat @ A @ B4 )
        = A ) ) ).

% inf.absorb1
thf(fact_797_inf_Oabsorb2,axiom,
    ! [B4: set_a,A: set_a] :
      ( ( ord_less_eq_set_a @ B4 @ A )
     => ( ( inf_inf_set_a @ A @ B4 )
        = B4 ) ) ).

% inf.absorb2
thf(fact_798_inf_Oabsorb2,axiom,
    ! [B4: nat,A: nat] :
      ( ( ord_less_eq_nat @ B4 @ A )
     => ( ( inf_inf_nat @ A @ B4 )
        = B4 ) ) ).

% inf.absorb2
thf(fact_799_inf__absorb1,axiom,
    ! [X: set_a,Y: set_a] :
      ( ( ord_less_eq_set_a @ X @ Y )
     => ( ( inf_inf_set_a @ X @ Y )
        = X ) ) ).

% inf_absorb1
thf(fact_800_inf__absorb1,axiom,
    ! [X: nat,Y: nat] :
      ( ( ord_less_eq_nat @ X @ Y )
     => ( ( inf_inf_nat @ X @ Y )
        = X ) ) ).

% inf_absorb1
thf(fact_801_inf__absorb2,axiom,
    ! [Y: set_a,X: set_a] :
      ( ( ord_less_eq_set_a @ Y @ X )
     => ( ( inf_inf_set_a @ X @ Y )
        = Y ) ) ).

% inf_absorb2
thf(fact_802_inf__absorb2,axiom,
    ! [Y: nat,X: nat] :
      ( ( ord_less_eq_nat @ Y @ X )
     => ( ( inf_inf_nat @ X @ Y )
        = Y ) ) ).

% inf_absorb2
thf(fact_803_inf_OboundedE,axiom,
    ! [A: set_a,B4: set_a,C2: set_a] :
      ( ( ord_less_eq_set_a @ A @ ( inf_inf_set_a @ B4 @ C2 ) )
     => ~ ( ( ord_less_eq_set_a @ A @ B4 )
         => ~ ( ord_less_eq_set_a @ A @ C2 ) ) ) ).

% inf.boundedE
thf(fact_804_inf_OboundedE,axiom,
    ! [A: nat,B4: nat,C2: nat] :
      ( ( ord_less_eq_nat @ A @ ( inf_inf_nat @ B4 @ C2 ) )
     => ~ ( ( ord_less_eq_nat @ A @ B4 )
         => ~ ( ord_less_eq_nat @ A @ C2 ) ) ) ).

% inf.boundedE
thf(fact_805_inf_OboundedI,axiom,
    ! [A: set_a,B4: set_a,C2: set_a] :
      ( ( ord_less_eq_set_a @ A @ B4 )
     => ( ( ord_less_eq_set_a @ A @ C2 )
       => ( ord_less_eq_set_a @ A @ ( inf_inf_set_a @ B4 @ C2 ) ) ) ) ).

% inf.boundedI
thf(fact_806_inf_OboundedI,axiom,
    ! [A: nat,B4: nat,C2: nat] :
      ( ( ord_less_eq_nat @ A @ B4 )
     => ( ( ord_less_eq_nat @ A @ C2 )
       => ( ord_less_eq_nat @ A @ ( inf_inf_nat @ B4 @ C2 ) ) ) ) ).

% inf.boundedI
thf(fact_807_inf__greatest,axiom,
    ! [X: set_a,Y: set_a,Z: set_a] :
      ( ( ord_less_eq_set_a @ X @ Y )
     => ( ( ord_less_eq_set_a @ X @ Z )
       => ( ord_less_eq_set_a @ X @ ( inf_inf_set_a @ Y @ Z ) ) ) ) ).

% inf_greatest
thf(fact_808_inf__greatest,axiom,
    ! [X: nat,Y: nat,Z: nat] :
      ( ( ord_less_eq_nat @ X @ Y )
     => ( ( ord_less_eq_nat @ X @ Z )
       => ( ord_less_eq_nat @ X @ ( inf_inf_nat @ Y @ Z ) ) ) ) ).

% inf_greatest
thf(fact_809_inf_Oorder__iff,axiom,
    ( ord_less_eq_set_a
    = ( ^ [A4: set_a,B3: set_a] :
          ( A4
          = ( inf_inf_set_a @ A4 @ B3 ) ) ) ) ).

% inf.order_iff
thf(fact_810_inf_Oorder__iff,axiom,
    ( ord_less_eq_nat
    = ( ^ [A4: nat,B3: nat] :
          ( A4
          = ( inf_inf_nat @ A4 @ B3 ) ) ) ) ).

% inf.order_iff
thf(fact_811_inf_Ocobounded1,axiom,
    ! [A: set_a,B4: set_a] : ( ord_less_eq_set_a @ ( inf_inf_set_a @ A @ B4 ) @ A ) ).

% inf.cobounded1
thf(fact_812_inf_Ocobounded1,axiom,
    ! [A: nat,B4: nat] : ( ord_less_eq_nat @ ( inf_inf_nat @ A @ B4 ) @ A ) ).

% inf.cobounded1
thf(fact_813_inf_Ocobounded2,axiom,
    ! [A: set_a,B4: set_a] : ( ord_less_eq_set_a @ ( inf_inf_set_a @ A @ B4 ) @ B4 ) ).

% inf.cobounded2
thf(fact_814_inf_Ocobounded2,axiom,
    ! [A: nat,B4: nat] : ( ord_less_eq_nat @ ( inf_inf_nat @ A @ B4 ) @ B4 ) ).

% inf.cobounded2
thf(fact_815_inf_Oabsorb__iff1,axiom,
    ( ord_less_eq_set_a
    = ( ^ [A4: set_a,B3: set_a] :
          ( ( inf_inf_set_a @ A4 @ B3 )
          = A4 ) ) ) ).

% inf.absorb_iff1
thf(fact_816_inf_Oabsorb__iff1,axiom,
    ( ord_less_eq_nat
    = ( ^ [A4: nat,B3: nat] :
          ( ( inf_inf_nat @ A4 @ B3 )
          = A4 ) ) ) ).

% inf.absorb_iff1
thf(fact_817_inf_Oabsorb__iff2,axiom,
    ( ord_less_eq_set_a
    = ( ^ [B3: set_a,A4: set_a] :
          ( ( inf_inf_set_a @ A4 @ B3 )
          = B3 ) ) ) ).

% inf.absorb_iff2
thf(fact_818_inf_Oabsorb__iff2,axiom,
    ( ord_less_eq_nat
    = ( ^ [B3: nat,A4: nat] :
          ( ( inf_inf_nat @ A4 @ B3 )
          = B3 ) ) ) ).

% inf.absorb_iff2
thf(fact_819_inf_OcoboundedI1,axiom,
    ! [A: set_a,C2: set_a,B4: set_a] :
      ( ( ord_less_eq_set_a @ A @ C2 )
     => ( ord_less_eq_set_a @ ( inf_inf_set_a @ A @ B4 ) @ C2 ) ) ).

% inf.coboundedI1
thf(fact_820_inf_OcoboundedI1,axiom,
    ! [A: nat,C2: nat,B4: nat] :
      ( ( ord_less_eq_nat @ A @ C2 )
     => ( ord_less_eq_nat @ ( inf_inf_nat @ A @ B4 ) @ C2 ) ) ).

% inf.coboundedI1
thf(fact_821_inf_OcoboundedI2,axiom,
    ! [B4: set_a,C2: set_a,A: set_a] :
      ( ( ord_less_eq_set_a @ B4 @ C2 )
     => ( ord_less_eq_set_a @ ( inf_inf_set_a @ A @ B4 ) @ C2 ) ) ).

% inf.coboundedI2
thf(fact_822_inf_OcoboundedI2,axiom,
    ! [B4: nat,C2: nat,A: nat] :
      ( ( ord_less_eq_nat @ B4 @ C2 )
     => ( ord_less_eq_nat @ ( inf_inf_nat @ A @ B4 ) @ C2 ) ) ).

% inf.coboundedI2
thf(fact_823_inf__sup__ord_I4_J,axiom,
    ! [Y: set_a,X: set_a] : ( ord_less_eq_set_a @ Y @ ( sup_sup_set_a @ X @ Y ) ) ).

% inf_sup_ord(4)
thf(fact_824_inf__sup__ord_I4_J,axiom,
    ! [Y: nat,X: nat] : ( ord_less_eq_nat @ Y @ ( sup_sup_nat @ X @ Y ) ) ).

% inf_sup_ord(4)
thf(fact_825_inf__sup__ord_I3_J,axiom,
    ! [X: set_a,Y: set_a] : ( ord_less_eq_set_a @ X @ ( sup_sup_set_a @ X @ Y ) ) ).

% inf_sup_ord(3)
thf(fact_826_inf__sup__ord_I3_J,axiom,
    ! [X: nat,Y: nat] : ( ord_less_eq_nat @ X @ ( sup_sup_nat @ X @ Y ) ) ).

% inf_sup_ord(3)
thf(fact_827_le__supE,axiom,
    ! [A: set_a,B4: set_a,X: set_a] :
      ( ( ord_less_eq_set_a @ ( sup_sup_set_a @ A @ B4 ) @ X )
     => ~ ( ( ord_less_eq_set_a @ A @ X )
         => ~ ( ord_less_eq_set_a @ B4 @ X ) ) ) ).

% le_supE
thf(fact_828_le__supE,axiom,
    ! [A: nat,B4: nat,X: nat] :
      ( ( ord_less_eq_nat @ ( sup_sup_nat @ A @ B4 ) @ X )
     => ~ ( ( ord_less_eq_nat @ A @ X )
         => ~ ( ord_less_eq_nat @ B4 @ X ) ) ) ).

% le_supE
thf(fact_829_le__supI,axiom,
    ! [A: set_a,X: set_a,B4: set_a] :
      ( ( ord_less_eq_set_a @ A @ X )
     => ( ( ord_less_eq_set_a @ B4 @ X )
       => ( ord_less_eq_set_a @ ( sup_sup_set_a @ A @ B4 ) @ X ) ) ) ).

% le_supI
thf(fact_830_le__supI,axiom,
    ! [A: nat,X: nat,B4: nat] :
      ( ( ord_less_eq_nat @ A @ X )
     => ( ( ord_less_eq_nat @ B4 @ X )
       => ( ord_less_eq_nat @ ( sup_sup_nat @ A @ B4 ) @ X ) ) ) ).

% le_supI
thf(fact_831_sup__ge1,axiom,
    ! [X: set_a,Y: set_a] : ( ord_less_eq_set_a @ X @ ( sup_sup_set_a @ X @ Y ) ) ).

% sup_ge1
thf(fact_832_sup__ge1,axiom,
    ! [X: nat,Y: nat] : ( ord_less_eq_nat @ X @ ( sup_sup_nat @ X @ Y ) ) ).

% sup_ge1
thf(fact_833_sup__ge2,axiom,
    ! [Y: set_a,X: set_a] : ( ord_less_eq_set_a @ Y @ ( sup_sup_set_a @ X @ Y ) ) ).

% sup_ge2
thf(fact_834_sup__ge2,axiom,
    ! [Y: nat,X: nat] : ( ord_less_eq_nat @ Y @ ( sup_sup_nat @ X @ Y ) ) ).

% sup_ge2
thf(fact_835_le__supI1,axiom,
    ! [X: set_a,A: set_a,B4: set_a] :
      ( ( ord_less_eq_set_a @ X @ A )
     => ( ord_less_eq_set_a @ X @ ( sup_sup_set_a @ A @ B4 ) ) ) ).

% le_supI1
thf(fact_836_le__supI1,axiom,
    ! [X: nat,A: nat,B4: nat] :
      ( ( ord_less_eq_nat @ X @ A )
     => ( ord_less_eq_nat @ X @ ( sup_sup_nat @ A @ B4 ) ) ) ).

% le_supI1
thf(fact_837_le__supI2,axiom,
    ! [X: set_a,B4: set_a,A: set_a] :
      ( ( ord_less_eq_set_a @ X @ B4 )
     => ( ord_less_eq_set_a @ X @ ( sup_sup_set_a @ A @ B4 ) ) ) ).

% le_supI2
thf(fact_838_le__supI2,axiom,
    ! [X: nat,B4: nat,A: nat] :
      ( ( ord_less_eq_nat @ X @ B4 )
     => ( ord_less_eq_nat @ X @ ( sup_sup_nat @ A @ B4 ) ) ) ).

% le_supI2
thf(fact_839_sup_Omono,axiom,
    ! [C2: set_a,A: set_a,D: set_a,B4: set_a] :
      ( ( ord_less_eq_set_a @ C2 @ A )
     => ( ( ord_less_eq_set_a @ D @ B4 )
       => ( ord_less_eq_set_a @ ( sup_sup_set_a @ C2 @ D ) @ ( sup_sup_set_a @ A @ B4 ) ) ) ) ).

% sup.mono
thf(fact_840_sup_Omono,axiom,
    ! [C2: nat,A: nat,D: nat,B4: nat] :
      ( ( ord_less_eq_nat @ C2 @ A )
     => ( ( ord_less_eq_nat @ D @ B4 )
       => ( ord_less_eq_nat @ ( sup_sup_nat @ C2 @ D ) @ ( sup_sup_nat @ A @ B4 ) ) ) ) ).

% sup.mono
thf(fact_841_sup__mono,axiom,
    ! [A: set_a,C2: set_a,B4: set_a,D: set_a] :
      ( ( ord_less_eq_set_a @ A @ C2 )
     => ( ( ord_less_eq_set_a @ B4 @ D )
       => ( ord_less_eq_set_a @ ( sup_sup_set_a @ A @ B4 ) @ ( sup_sup_set_a @ C2 @ D ) ) ) ) ).

% sup_mono
thf(fact_842_sup__mono,axiom,
    ! [A: nat,C2: nat,B4: nat,D: nat] :
      ( ( ord_less_eq_nat @ A @ C2 )
     => ( ( ord_less_eq_nat @ B4 @ D )
       => ( ord_less_eq_nat @ ( sup_sup_nat @ A @ B4 ) @ ( sup_sup_nat @ C2 @ D ) ) ) ) ).

% sup_mono
thf(fact_843_sup__least,axiom,
    ! [Y: set_a,X: set_a,Z: set_a] :
      ( ( ord_less_eq_set_a @ Y @ X )
     => ( ( ord_less_eq_set_a @ Z @ X )
       => ( ord_less_eq_set_a @ ( sup_sup_set_a @ Y @ Z ) @ X ) ) ) ).

% sup_least
thf(fact_844_sup__least,axiom,
    ! [Y: nat,X: nat,Z: nat] :
      ( ( ord_less_eq_nat @ Y @ X )
     => ( ( ord_less_eq_nat @ Z @ X )
       => ( ord_less_eq_nat @ ( sup_sup_nat @ Y @ Z ) @ X ) ) ) ).

% sup_least
thf(fact_845_le__iff__sup,axiom,
    ( ord_less_eq_set_a
    = ( ^ [X2: set_a,Y3: set_a] :
          ( ( sup_sup_set_a @ X2 @ Y3 )
          = Y3 ) ) ) ).

% le_iff_sup
thf(fact_846_le__iff__sup,axiom,
    ( ord_less_eq_nat
    = ( ^ [X2: nat,Y3: nat] :
          ( ( sup_sup_nat @ X2 @ Y3 )
          = Y3 ) ) ) ).

% le_iff_sup
thf(fact_847_sup_OorderE,axiom,
    ! [B4: set_a,A: set_a] :
      ( ( ord_less_eq_set_a @ B4 @ A )
     => ( A
        = ( sup_sup_set_a @ A @ B4 ) ) ) ).

% sup.orderE
thf(fact_848_sup_OorderE,axiom,
    ! [B4: nat,A: nat] :
      ( ( ord_less_eq_nat @ B4 @ A )
     => ( A
        = ( sup_sup_nat @ A @ B4 ) ) ) ).

% sup.orderE
thf(fact_849_sup_OorderI,axiom,
    ! [A: set_a,B4: set_a] :
      ( ( A
        = ( sup_sup_set_a @ A @ B4 ) )
     => ( ord_less_eq_set_a @ B4 @ A ) ) ).

% sup.orderI
thf(fact_850_sup_OorderI,axiom,
    ! [A: nat,B4: nat] :
      ( ( A
        = ( sup_sup_nat @ A @ B4 ) )
     => ( ord_less_eq_nat @ B4 @ A ) ) ).

% sup.orderI
thf(fact_851_sup__unique,axiom,
    ! [F: set_a > set_a > set_a,X: set_a,Y: set_a] :
      ( ! [X3: set_a,Y2: set_a] : ( ord_less_eq_set_a @ X3 @ ( F @ X3 @ Y2 ) )
     => ( ! [X3: set_a,Y2: set_a] : ( ord_less_eq_set_a @ Y2 @ ( F @ X3 @ Y2 ) )
       => ( ! [X3: set_a,Y2: set_a,Z3: set_a] :
              ( ( ord_less_eq_set_a @ Y2 @ X3 )
             => ( ( ord_less_eq_set_a @ Z3 @ X3 )
               => ( ord_less_eq_set_a @ ( F @ Y2 @ Z3 ) @ X3 ) ) )
         => ( ( sup_sup_set_a @ X @ Y )
            = ( F @ X @ Y ) ) ) ) ) ).

% sup_unique
thf(fact_852_sup__unique,axiom,
    ! [F: nat > nat > nat,X: nat,Y: nat] :
      ( ! [X3: nat,Y2: nat] : ( ord_less_eq_nat @ X3 @ ( F @ X3 @ Y2 ) )
     => ( ! [X3: nat,Y2: nat] : ( ord_less_eq_nat @ Y2 @ ( F @ X3 @ Y2 ) )
       => ( ! [X3: nat,Y2: nat,Z3: nat] :
              ( ( ord_less_eq_nat @ Y2 @ X3 )
             => ( ( ord_less_eq_nat @ Z3 @ X3 )
               => ( ord_less_eq_nat @ ( F @ Y2 @ Z3 ) @ X3 ) ) )
         => ( ( sup_sup_nat @ X @ Y )
            = ( F @ X @ Y ) ) ) ) ) ).

% sup_unique
thf(fact_853_sup_Oabsorb1,axiom,
    ! [B4: set_a,A: set_a] :
      ( ( ord_less_eq_set_a @ B4 @ A )
     => ( ( sup_sup_set_a @ A @ B4 )
        = A ) ) ).

% sup.absorb1
thf(fact_854_sup_Oabsorb1,axiom,
    ! [B4: nat,A: nat] :
      ( ( ord_less_eq_nat @ B4 @ A )
     => ( ( sup_sup_nat @ A @ B4 )
        = A ) ) ).

% sup.absorb1
thf(fact_855_sup_Oabsorb2,axiom,
    ! [A: set_a,B4: set_a] :
      ( ( ord_less_eq_set_a @ A @ B4 )
     => ( ( sup_sup_set_a @ A @ B4 )
        = B4 ) ) ).

% sup.absorb2
thf(fact_856_sup_Oabsorb2,axiom,
    ! [A: nat,B4: nat] :
      ( ( ord_less_eq_nat @ A @ B4 )
     => ( ( sup_sup_nat @ A @ B4 )
        = B4 ) ) ).

% sup.absorb2
thf(fact_857_sup__absorb1,axiom,
    ! [Y: set_a,X: set_a] :
      ( ( ord_less_eq_set_a @ Y @ X )
     => ( ( sup_sup_set_a @ X @ Y )
        = X ) ) ).

% sup_absorb1
thf(fact_858_sup__absorb1,axiom,
    ! [Y: nat,X: nat] :
      ( ( ord_less_eq_nat @ Y @ X )
     => ( ( sup_sup_nat @ X @ Y )
        = X ) ) ).

% sup_absorb1
thf(fact_859_sup__absorb2,axiom,
    ! [X: set_a,Y: set_a] :
      ( ( ord_less_eq_set_a @ X @ Y )
     => ( ( sup_sup_set_a @ X @ Y )
        = Y ) ) ).

% sup_absorb2
thf(fact_860_sup__absorb2,axiom,
    ! [X: nat,Y: nat] :
      ( ( ord_less_eq_nat @ X @ Y )
     => ( ( sup_sup_nat @ X @ Y )
        = Y ) ) ).

% sup_absorb2
thf(fact_861_sup_OboundedE,axiom,
    ! [B4: set_a,C2: set_a,A: set_a] :
      ( ( ord_less_eq_set_a @ ( sup_sup_set_a @ B4 @ C2 ) @ A )
     => ~ ( ( ord_less_eq_set_a @ B4 @ A )
         => ~ ( ord_less_eq_set_a @ C2 @ A ) ) ) ).

% sup.boundedE
thf(fact_862_sup_OboundedE,axiom,
    ! [B4: nat,C2: nat,A: nat] :
      ( ( ord_less_eq_nat @ ( sup_sup_nat @ B4 @ C2 ) @ A )
     => ~ ( ( ord_less_eq_nat @ B4 @ A )
         => ~ ( ord_less_eq_nat @ C2 @ A ) ) ) ).

% sup.boundedE
thf(fact_863_sup_OboundedI,axiom,
    ! [B4: set_a,A: set_a,C2: set_a] :
      ( ( ord_less_eq_set_a @ B4 @ A )
     => ( ( ord_less_eq_set_a @ C2 @ A )
       => ( ord_less_eq_set_a @ ( sup_sup_set_a @ B4 @ C2 ) @ A ) ) ) ).

% sup.boundedI
thf(fact_864_sup_OboundedI,axiom,
    ! [B4: nat,A: nat,C2: nat] :
      ( ( ord_less_eq_nat @ B4 @ A )
     => ( ( ord_less_eq_nat @ C2 @ A )
       => ( ord_less_eq_nat @ ( sup_sup_nat @ B4 @ C2 ) @ A ) ) ) ).

% sup.boundedI
thf(fact_865_sup_Oorder__iff,axiom,
    ( ord_less_eq_set_a
    = ( ^ [B3: set_a,A4: set_a] :
          ( A4
          = ( sup_sup_set_a @ A4 @ B3 ) ) ) ) ).

% sup.order_iff
thf(fact_866_sup_Oorder__iff,axiom,
    ( ord_less_eq_nat
    = ( ^ [B3: nat,A4: nat] :
          ( A4
          = ( sup_sup_nat @ A4 @ B3 ) ) ) ) ).

% sup.order_iff
thf(fact_867_sup_Ocobounded1,axiom,
    ! [A: set_a,B4: set_a] : ( ord_less_eq_set_a @ A @ ( sup_sup_set_a @ A @ B4 ) ) ).

% sup.cobounded1
thf(fact_868_sup_Ocobounded1,axiom,
    ! [A: nat,B4: nat] : ( ord_less_eq_nat @ A @ ( sup_sup_nat @ A @ B4 ) ) ).

% sup.cobounded1
thf(fact_869_sup_Ocobounded2,axiom,
    ! [B4: set_a,A: set_a] : ( ord_less_eq_set_a @ B4 @ ( sup_sup_set_a @ A @ B4 ) ) ).

% sup.cobounded2
thf(fact_870_sup_Ocobounded2,axiom,
    ! [B4: nat,A: nat] : ( ord_less_eq_nat @ B4 @ ( sup_sup_nat @ A @ B4 ) ) ).

% sup.cobounded2
thf(fact_871_sup_Oabsorb__iff1,axiom,
    ( ord_less_eq_set_a
    = ( ^ [B3: set_a,A4: set_a] :
          ( ( sup_sup_set_a @ A4 @ B3 )
          = A4 ) ) ) ).

% sup.absorb_iff1
thf(fact_872_sup_Oabsorb__iff1,axiom,
    ( ord_less_eq_nat
    = ( ^ [B3: nat,A4: nat] :
          ( ( sup_sup_nat @ A4 @ B3 )
          = A4 ) ) ) ).

% sup.absorb_iff1
thf(fact_873_sup_Oabsorb__iff2,axiom,
    ( ord_less_eq_set_a
    = ( ^ [A4: set_a,B3: set_a] :
          ( ( sup_sup_set_a @ A4 @ B3 )
          = B3 ) ) ) ).

% sup.absorb_iff2
thf(fact_874_sup_Oabsorb__iff2,axiom,
    ( ord_less_eq_nat
    = ( ^ [A4: nat,B3: nat] :
          ( ( sup_sup_nat @ A4 @ B3 )
          = B3 ) ) ) ).

% sup.absorb_iff2
thf(fact_875_sup_OcoboundedI1,axiom,
    ! [C2: set_a,A: set_a,B4: set_a] :
      ( ( ord_less_eq_set_a @ C2 @ A )
     => ( ord_less_eq_set_a @ C2 @ ( sup_sup_set_a @ A @ B4 ) ) ) ).

% sup.coboundedI1
thf(fact_876_sup_OcoboundedI1,axiom,
    ! [C2: nat,A: nat,B4: nat] :
      ( ( ord_less_eq_nat @ C2 @ A )
     => ( ord_less_eq_nat @ C2 @ ( sup_sup_nat @ A @ B4 ) ) ) ).

% sup.coboundedI1
thf(fact_877_sup_OcoboundedI2,axiom,
    ! [C2: set_a,B4: set_a,A: set_a] :
      ( ( ord_less_eq_set_a @ C2 @ B4 )
     => ( ord_less_eq_set_a @ C2 @ ( sup_sup_set_a @ A @ B4 ) ) ) ).

% sup.coboundedI2
thf(fact_878_sup_OcoboundedI2,axiom,
    ! [C2: nat,B4: nat,A: nat] :
      ( ( ord_less_eq_nat @ C2 @ B4 )
     => ( ord_less_eq_nat @ C2 @ ( sup_sup_nat @ A @ B4 ) ) ) ).

% sup.coboundedI2
thf(fact_879_inf_Ostrict__coboundedI2,axiom,
    ! [B4: set_a,C2: set_a,A: set_a] :
      ( ( ord_less_set_a @ B4 @ C2 )
     => ( ord_less_set_a @ ( inf_inf_set_a @ A @ B4 ) @ C2 ) ) ).

% inf.strict_coboundedI2
thf(fact_880_inf_Ostrict__coboundedI2,axiom,
    ! [B4: nat,C2: nat,A: nat] :
      ( ( ord_less_nat @ B4 @ C2 )
     => ( ord_less_nat @ ( inf_inf_nat @ A @ B4 ) @ C2 ) ) ).

% inf.strict_coboundedI2
thf(fact_881_inf_Ostrict__coboundedI1,axiom,
    ! [A: set_a,C2: set_a,B4: set_a] :
      ( ( ord_less_set_a @ A @ C2 )
     => ( ord_less_set_a @ ( inf_inf_set_a @ A @ B4 ) @ C2 ) ) ).

% inf.strict_coboundedI1
thf(fact_882_inf_Ostrict__coboundedI1,axiom,
    ! [A: nat,C2: nat,B4: nat] :
      ( ( ord_less_nat @ A @ C2 )
     => ( ord_less_nat @ ( inf_inf_nat @ A @ B4 ) @ C2 ) ) ).

% inf.strict_coboundedI1
thf(fact_883_inf_Ostrict__order__iff,axiom,
    ( ord_less_set_a
    = ( ^ [A4: set_a,B3: set_a] :
          ( ( A4
            = ( inf_inf_set_a @ A4 @ B3 ) )
          & ( A4 != B3 ) ) ) ) ).

% inf.strict_order_iff
thf(fact_884_inf_Ostrict__order__iff,axiom,
    ( ord_less_nat
    = ( ^ [A4: nat,B3: nat] :
          ( ( A4
            = ( inf_inf_nat @ A4 @ B3 ) )
          & ( A4 != B3 ) ) ) ) ).

% inf.strict_order_iff
thf(fact_885_inf_Ostrict__boundedE,axiom,
    ! [A: set_a,B4: set_a,C2: set_a] :
      ( ( ord_less_set_a @ A @ ( inf_inf_set_a @ B4 @ C2 ) )
     => ~ ( ( ord_less_set_a @ A @ B4 )
         => ~ ( ord_less_set_a @ A @ C2 ) ) ) ).

% inf.strict_boundedE
thf(fact_886_inf_Ostrict__boundedE,axiom,
    ! [A: nat,B4: nat,C2: nat] :
      ( ( ord_less_nat @ A @ ( inf_inf_nat @ B4 @ C2 ) )
     => ~ ( ( ord_less_nat @ A @ B4 )
         => ~ ( ord_less_nat @ A @ C2 ) ) ) ).

% inf.strict_boundedE
thf(fact_887_inf_Oabsorb4,axiom,
    ! [B4: set_a,A: set_a] :
      ( ( ord_less_set_a @ B4 @ A )
     => ( ( inf_inf_set_a @ A @ B4 )
        = B4 ) ) ).

% inf.absorb4
thf(fact_888_inf_Oabsorb4,axiom,
    ! [B4: nat,A: nat] :
      ( ( ord_less_nat @ B4 @ A )
     => ( ( inf_inf_nat @ A @ B4 )
        = B4 ) ) ).

% inf.absorb4
thf(fact_889_inf_Oabsorb3,axiom,
    ! [A: set_a,B4: set_a] :
      ( ( ord_less_set_a @ A @ B4 )
     => ( ( inf_inf_set_a @ A @ B4 )
        = A ) ) ).

% inf.absorb3
thf(fact_890_inf_Oabsorb3,axiom,
    ! [A: nat,B4: nat] :
      ( ( ord_less_nat @ A @ B4 )
     => ( ( inf_inf_nat @ A @ B4 )
        = A ) ) ).

% inf.absorb3
thf(fact_891_less__infI2,axiom,
    ! [B4: set_a,X: set_a,A: set_a] :
      ( ( ord_less_set_a @ B4 @ X )
     => ( ord_less_set_a @ ( inf_inf_set_a @ A @ B4 ) @ X ) ) ).

% less_infI2
thf(fact_892_less__infI2,axiom,
    ! [B4: nat,X: nat,A: nat] :
      ( ( ord_less_nat @ B4 @ X )
     => ( ord_less_nat @ ( inf_inf_nat @ A @ B4 ) @ X ) ) ).

% less_infI2
thf(fact_893_less__infI1,axiom,
    ! [A: set_a,X: set_a,B4: set_a] :
      ( ( ord_less_set_a @ A @ X )
     => ( ord_less_set_a @ ( inf_inf_set_a @ A @ B4 ) @ X ) ) ).

% less_infI1
thf(fact_894_less__infI1,axiom,
    ! [A: nat,X: nat,B4: nat] :
      ( ( ord_less_nat @ A @ X )
     => ( ord_less_nat @ ( inf_inf_nat @ A @ B4 ) @ X ) ) ).

% less_infI1
thf(fact_895_sup_Ostrict__coboundedI2,axiom,
    ! [C2: set_a,B4: set_a,A: set_a] :
      ( ( ord_less_set_a @ C2 @ B4 )
     => ( ord_less_set_a @ C2 @ ( sup_sup_set_a @ A @ B4 ) ) ) ).

% sup.strict_coboundedI2
thf(fact_896_sup_Ostrict__coboundedI2,axiom,
    ! [C2: nat,B4: nat,A: nat] :
      ( ( ord_less_nat @ C2 @ B4 )
     => ( ord_less_nat @ C2 @ ( sup_sup_nat @ A @ B4 ) ) ) ).

% sup.strict_coboundedI2
thf(fact_897_sup_Ostrict__coboundedI1,axiom,
    ! [C2: set_a,A: set_a,B4: set_a] :
      ( ( ord_less_set_a @ C2 @ A )
     => ( ord_less_set_a @ C2 @ ( sup_sup_set_a @ A @ B4 ) ) ) ).

% sup.strict_coboundedI1
thf(fact_898_sup_Ostrict__coboundedI1,axiom,
    ! [C2: nat,A: nat,B4: nat] :
      ( ( ord_less_nat @ C2 @ A )
     => ( ord_less_nat @ C2 @ ( sup_sup_nat @ A @ B4 ) ) ) ).

% sup.strict_coboundedI1
thf(fact_899_sup_Ostrict__order__iff,axiom,
    ( ord_less_set_a
    = ( ^ [B3: set_a,A4: set_a] :
          ( ( A4
            = ( sup_sup_set_a @ A4 @ B3 ) )
          & ( A4 != B3 ) ) ) ) ).

% sup.strict_order_iff
thf(fact_900_sup_Ostrict__order__iff,axiom,
    ( ord_less_nat
    = ( ^ [B3: nat,A4: nat] :
          ( ( A4
            = ( sup_sup_nat @ A4 @ B3 ) )
          & ( A4 != B3 ) ) ) ) ).

% sup.strict_order_iff
thf(fact_901_sup_Ostrict__boundedE,axiom,
    ! [B4: set_a,C2: set_a,A: set_a] :
      ( ( ord_less_set_a @ ( sup_sup_set_a @ B4 @ C2 ) @ A )
     => ~ ( ( ord_less_set_a @ B4 @ A )
         => ~ ( ord_less_set_a @ C2 @ A ) ) ) ).

% sup.strict_boundedE
thf(fact_902_sup_Ostrict__boundedE,axiom,
    ! [B4: nat,C2: nat,A: nat] :
      ( ( ord_less_nat @ ( sup_sup_nat @ B4 @ C2 ) @ A )
     => ~ ( ( ord_less_nat @ B4 @ A )
         => ~ ( ord_less_nat @ C2 @ A ) ) ) ).

% sup.strict_boundedE
thf(fact_903_sup_Oabsorb4,axiom,
    ! [A: set_a,B4: set_a] :
      ( ( ord_less_set_a @ A @ B4 )
     => ( ( sup_sup_set_a @ A @ B4 )
        = B4 ) ) ).

% sup.absorb4
thf(fact_904_sup_Oabsorb4,axiom,
    ! [A: nat,B4: nat] :
      ( ( ord_less_nat @ A @ B4 )
     => ( ( sup_sup_nat @ A @ B4 )
        = B4 ) ) ).

% sup.absorb4
thf(fact_905_sup_Oabsorb3,axiom,
    ! [B4: set_a,A: set_a] :
      ( ( ord_less_set_a @ B4 @ A )
     => ( ( sup_sup_set_a @ A @ B4 )
        = A ) ) ).

% sup.absorb3
thf(fact_906_sup_Oabsorb3,axiom,
    ! [B4: nat,A: nat] :
      ( ( ord_less_nat @ B4 @ A )
     => ( ( sup_sup_nat @ A @ B4 )
        = A ) ) ).

% sup.absorb3
thf(fact_907_less__supI2,axiom,
    ! [X: set_a,B4: set_a,A: set_a] :
      ( ( ord_less_set_a @ X @ B4 )
     => ( ord_less_set_a @ X @ ( sup_sup_set_a @ A @ B4 ) ) ) ).

% less_supI2
thf(fact_908_less__supI2,axiom,
    ! [X: nat,B4: nat,A: nat] :
      ( ( ord_less_nat @ X @ B4 )
     => ( ord_less_nat @ X @ ( sup_sup_nat @ A @ B4 ) ) ) ).

% less_supI2
thf(fact_909_less__supI1,axiom,
    ! [X: set_a,A: set_a,B4: set_a] :
      ( ( ord_less_set_a @ X @ A )
     => ( ord_less_set_a @ X @ ( sup_sup_set_a @ A @ B4 ) ) ) ).

% less_supI1
thf(fact_910_less__supI1,axiom,
    ! [X: nat,A: nat,B4: nat] :
      ( ( ord_less_nat @ X @ A )
     => ( ord_less_nat @ X @ ( sup_sup_nat @ A @ B4 ) ) ) ).

% less_supI1
thf(fact_911_infinite__descent0,axiom,
    ! [P: nat > $o,N2: nat] :
      ( ( P @ zero_zero_nat )
     => ( ! [N3: nat] :
            ( ( ord_less_nat @ zero_zero_nat @ N3 )
           => ( ~ ( P @ N3 )
             => ? [M3: nat] :
                  ( ( ord_less_nat @ M3 @ N3 )
                  & ~ ( P @ M3 ) ) ) )
       => ( P @ N2 ) ) ) ).

% infinite_descent0
thf(fact_912_gr__implies__not0,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_nat @ M2 @ N2 )
     => ( N2 != zero_zero_nat ) ) ).

% gr_implies_not0
thf(fact_913_less__zeroE,axiom,
    ! [N2: nat] :
      ~ ( ord_less_nat @ N2 @ zero_zero_nat ) ).

% less_zeroE
thf(fact_914_not__less0,axiom,
    ! [N2: nat] :
      ~ ( ord_less_nat @ N2 @ zero_zero_nat ) ).

% not_less0
thf(fact_915_not__gr0,axiom,
    ! [N2: nat] :
      ( ( ~ ( ord_less_nat @ zero_zero_nat @ N2 ) )
      = ( N2 = zero_zero_nat ) ) ).

% not_gr0
thf(fact_916_gr0I,axiom,
    ! [N2: nat] :
      ( ( N2 != zero_zero_nat )
     => ( ord_less_nat @ zero_zero_nat @ N2 ) ) ).

% gr0I
thf(fact_917_bot__nat__0_Oextremum__strict,axiom,
    ! [A: nat] :
      ~ ( ord_less_nat @ A @ zero_zero_nat ) ).

% bot_nat_0.extremum_strict
thf(fact_918_less__eq__nat_Osimps_I1_J,axiom,
    ! [N2: nat] : ( ord_less_eq_nat @ zero_zero_nat @ N2 ) ).

% less_eq_nat.simps(1)
thf(fact_919_bot__nat__0_Oextremum__unique,axiom,
    ! [A: nat] :
      ( ( ord_less_eq_nat @ A @ zero_zero_nat )
      = ( A = zero_zero_nat ) ) ).

% bot_nat_0.extremum_unique
thf(fact_920_bot__nat__0_Oextremum__uniqueI,axiom,
    ! [A: nat] :
      ( ( ord_less_eq_nat @ A @ zero_zero_nat )
     => ( A = zero_zero_nat ) ) ).

% bot_nat_0.extremum_uniqueI
thf(fact_921_le__0__eq,axiom,
    ! [N2: nat] :
      ( ( ord_less_eq_nat @ N2 @ zero_zero_nat )
      = ( N2 = zero_zero_nat ) ) ).

% le_0_eq
thf(fact_922_less__mono__imp__le__mono,axiom,
    ! [F: nat > nat,I: nat,J: nat] :
      ( ! [I2: nat,J2: nat] :
          ( ( ord_less_nat @ I2 @ J2 )
         => ( ord_less_nat @ ( F @ I2 ) @ ( F @ J2 ) ) )
     => ( ( ord_less_eq_nat @ I @ J )
       => ( ord_less_eq_nat @ ( F @ I ) @ ( F @ J ) ) ) ) ).

% less_mono_imp_le_mono
thf(fact_923_le__neq__implies__less,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_eq_nat @ M2 @ N2 )
     => ( ( M2 != N2 )
       => ( ord_less_nat @ M2 @ N2 ) ) ) ).

% le_neq_implies_less
thf(fact_924_less__or__eq__imp__le,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ( ord_less_nat @ M2 @ N2 )
        | ( M2 = N2 ) )
     => ( ord_less_eq_nat @ M2 @ N2 ) ) ).

% less_or_eq_imp_le
thf(fact_925_le__eq__less__or__eq,axiom,
    ( ord_less_eq_nat
    = ( ^ [M4: nat,N4: nat] :
          ( ( ord_less_nat @ M4 @ N4 )
          | ( M4 = N4 ) ) ) ) ).

% le_eq_less_or_eq
thf(fact_926_less__imp__le__nat,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_nat @ M2 @ N2 )
     => ( ord_less_eq_nat @ M2 @ N2 ) ) ).

% less_imp_le_nat
thf(fact_927_nat__less__le,axiom,
    ( ord_less_nat
    = ( ^ [M4: nat,N4: nat] :
          ( ( ord_less_eq_nat @ M4 @ N4 )
          & ( M4 != N4 ) ) ) ) ).

% nat_less_le
thf(fact_928_distrib__imp1,axiom,
    ! [X: set_a,Y: set_a,Z: set_a] :
      ( ! [X3: set_a,Y2: set_a,Z3: set_a] :
          ( ( inf_inf_set_a @ X3 @ ( sup_sup_set_a @ Y2 @ Z3 ) )
          = ( sup_sup_set_a @ ( inf_inf_set_a @ X3 @ Y2 ) @ ( inf_inf_set_a @ X3 @ Z3 ) ) )
     => ( ( sup_sup_set_a @ X @ ( inf_inf_set_a @ Y @ Z ) )
        = ( inf_inf_set_a @ ( sup_sup_set_a @ X @ Y ) @ ( sup_sup_set_a @ X @ Z ) ) ) ) ).

% distrib_imp1
thf(fact_929_distrib__imp2,axiom,
    ! [X: set_a,Y: set_a,Z: set_a] :
      ( ! [X3: set_a,Y2: set_a,Z3: set_a] :
          ( ( sup_sup_set_a @ X3 @ ( inf_inf_set_a @ Y2 @ Z3 ) )
          = ( inf_inf_set_a @ ( sup_sup_set_a @ X3 @ Y2 ) @ ( sup_sup_set_a @ X3 @ Z3 ) ) )
     => ( ( inf_inf_set_a @ X @ ( sup_sup_set_a @ Y @ Z ) )
        = ( sup_sup_set_a @ ( inf_inf_set_a @ X @ Y ) @ ( inf_inf_set_a @ X @ Z ) ) ) ) ).

% distrib_imp2
thf(fact_930_inf__sup__distrib1,axiom,
    ! [X: set_a,Y: set_a,Z: set_a] :
      ( ( inf_inf_set_a @ X @ ( sup_sup_set_a @ Y @ Z ) )
      = ( sup_sup_set_a @ ( inf_inf_set_a @ X @ Y ) @ ( inf_inf_set_a @ X @ Z ) ) ) ).

% inf_sup_distrib1
thf(fact_931_inf__sup__distrib2,axiom,
    ! [Y: set_a,Z: set_a,X: set_a] :
      ( ( inf_inf_set_a @ ( sup_sup_set_a @ Y @ Z ) @ X )
      = ( sup_sup_set_a @ ( inf_inf_set_a @ Y @ X ) @ ( inf_inf_set_a @ Z @ X ) ) ) ).

% inf_sup_distrib2
thf(fact_932_sup__inf__distrib1,axiom,
    ! [X: set_a,Y: set_a,Z: set_a] :
      ( ( sup_sup_set_a @ X @ ( inf_inf_set_a @ Y @ Z ) )
      = ( inf_inf_set_a @ ( sup_sup_set_a @ X @ Y ) @ ( sup_sup_set_a @ X @ Z ) ) ) ).

% sup_inf_distrib1
thf(fact_933_sup__inf__distrib2,axiom,
    ! [Y: set_a,Z: set_a,X: set_a] :
      ( ( sup_sup_set_a @ ( inf_inf_set_a @ Y @ Z ) @ X )
      = ( inf_inf_set_a @ ( sup_sup_set_a @ Y @ X ) @ ( sup_sup_set_a @ Z @ X ) ) ) ).

% sup_inf_distrib2
thf(fact_934_distrib__sup__le,axiom,
    ! [X: set_a,Y: set_a,Z: set_a] : ( ord_less_eq_set_a @ ( sup_sup_set_a @ X @ ( inf_inf_set_a @ Y @ Z ) ) @ ( inf_inf_set_a @ ( sup_sup_set_a @ X @ Y ) @ ( sup_sup_set_a @ X @ Z ) ) ) ).

% distrib_sup_le
thf(fact_935_distrib__sup__le,axiom,
    ! [X: nat,Y: nat,Z: nat] : ( ord_less_eq_nat @ ( sup_sup_nat @ X @ ( inf_inf_nat @ Y @ Z ) ) @ ( inf_inf_nat @ ( sup_sup_nat @ X @ Y ) @ ( sup_sup_nat @ X @ Z ) ) ) ).

% distrib_sup_le
thf(fact_936_distrib__inf__le,axiom,
    ! [X: set_a,Y: set_a,Z: set_a] : ( ord_less_eq_set_a @ ( sup_sup_set_a @ ( inf_inf_set_a @ X @ Y ) @ ( inf_inf_set_a @ X @ Z ) ) @ ( inf_inf_set_a @ X @ ( sup_sup_set_a @ Y @ Z ) ) ) ).

% distrib_inf_le
thf(fact_937_distrib__inf__le,axiom,
    ! [X: nat,Y: nat,Z: nat] : ( ord_less_eq_nat @ ( sup_sup_nat @ ( inf_inf_nat @ X @ Y ) @ ( inf_inf_nat @ X @ Z ) ) @ ( inf_inf_nat @ X @ ( sup_sup_nat @ Y @ Z ) ) ) ).

% distrib_inf_le
thf(fact_938_ex__least__nat__le,axiom,
    ! [P: nat > $o,N2: nat] :
      ( ( P @ N2 )
     => ( ~ ( P @ zero_zero_nat )
       => ? [K3: nat] :
            ( ( ord_less_eq_nat @ K3 @ N2 )
            & ! [I3: nat] :
                ( ( ord_less_nat @ I3 @ K3 )
               => ~ ( P @ I3 ) )
            & ( P @ K3 ) ) ) ) ).

% ex_least_nat_le
thf(fact_939_sumset__iterated__r,axiom,
    ! [R: nat,A2: set_a] :
      ( ( ord_less_nat @ zero_zero_nat @ R )
     => ( ( pluenn1960970773371692859ated_a @ g @ addition @ zero @ A2 @ R )
        = ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ ( pluenn1960970773371692859ated_a @ g @ addition @ zero @ A2 @ ( minus_minus_nat @ R @ one_one_nat ) ) ) ) ) ).

% sumset_iterated_r
thf(fact_940_boolean__algebra_Oconj__zero__left,axiom,
    ! [X: set_a] :
      ( ( inf_inf_set_a @ bot_bot_set_a @ X )
      = bot_bot_set_a ) ).

% boolean_algebra.conj_zero_left
thf(fact_941_boolean__algebra_Oconj__zero__right,axiom,
    ! [X: set_a] :
      ( ( inf_inf_set_a @ X @ bot_bot_set_a )
      = bot_bot_set_a ) ).

% boolean_algebra.conj_zero_right
thf(fact_942_finite__linorder__min__induct,axiom,
    ! [A2: set_nat,P: set_nat > $o] :
      ( ( finite_finite_nat @ A2 )
     => ( ( P @ bot_bot_set_nat )
       => ( ! [B2: nat,A8: set_nat] :
              ( ( finite_finite_nat @ A8 )
             => ( ! [X4: nat] :
                    ( ( member_nat @ X4 @ A8 )
                   => ( ord_less_nat @ B2 @ X4 ) )
               => ( ( P @ A8 )
                 => ( P @ ( insert_nat @ B2 @ A8 ) ) ) ) )
         => ( P @ A2 ) ) ) ) ).

% finite_linorder_min_induct
thf(fact_943_less__one,axiom,
    ! [N2: nat] :
      ( ( ord_less_nat @ N2 @ one_one_nat )
      = ( N2 = zero_zero_nat ) ) ).

% less_one
thf(fact_944_card__Diff__insert,axiom,
    ! [A: nat,A2: set_nat,B: set_nat] :
      ( ( member_nat @ A @ A2 )
     => ( ~ ( member_nat @ A @ B )
       => ( ( finite_card_nat @ ( minus_minus_set_nat @ A2 @ ( insert_nat @ A @ B ) ) )
          = ( minus_minus_nat @ ( finite_card_nat @ ( minus_minus_set_nat @ A2 @ B ) ) @ one_one_nat ) ) ) ) ).

% card_Diff_insert
thf(fact_945_card__Diff__insert,axiom,
    ! [A: a,A2: set_a,B: set_a] :
      ( ( member_a @ A @ A2 )
     => ( ~ ( member_a @ A @ B )
       => ( ( finite_card_a @ ( minus_minus_set_a @ A2 @ ( insert_a @ A @ B ) ) )
          = ( minus_minus_nat @ ( finite_card_a @ ( minus_minus_set_a @ A2 @ B ) ) @ one_one_nat ) ) ) ) ).

% card_Diff_insert
thf(fact_946_psubsetD,axiom,
    ! [A2: set_a,B: set_a,C2: a] :
      ( ( ord_less_set_a @ A2 @ B )
     => ( ( member_a @ C2 @ A2 )
       => ( member_a @ C2 @ B ) ) ) ).

% psubsetD
thf(fact_947_psubsetD,axiom,
    ! [A2: set_nat,B: set_nat,C2: nat] :
      ( ( ord_less_set_nat @ A2 @ B )
     => ( ( member_nat @ C2 @ A2 )
       => ( member_nat @ C2 @ B ) ) ) ).

% psubsetD
thf(fact_948_bot__nat__def,axiom,
    bot_bot_nat = zero_zero_nat ).

% bot_nat_def
thf(fact_949_diff__commute,axiom,
    ! [I: nat,J: nat,K: nat] :
      ( ( minus_minus_nat @ ( minus_minus_nat @ I @ J ) @ K )
      = ( minus_minus_nat @ ( minus_minus_nat @ I @ K ) @ J ) ) ).

% diff_commute
thf(fact_950_one__reorient,axiom,
    ! [X: nat] :
      ( ( one_one_nat = X )
      = ( X = one_one_nat ) ) ).

% one_reorient
thf(fact_951_bot__set__def,axiom,
    ( bot_bot_set_a
    = ( collect_a @ bot_bot_a_o ) ) ).

% bot_set_def
thf(fact_952_boolean__algebra__cancel_Oinf2,axiom,
    ! [B: set_a,K: set_a,B4: set_a,A: set_a] :
      ( ( B
        = ( inf_inf_set_a @ K @ B4 ) )
     => ( ( inf_inf_set_a @ A @ B )
        = ( inf_inf_set_a @ K @ ( inf_inf_set_a @ A @ B4 ) ) ) ) ).

% boolean_algebra_cancel.inf2
thf(fact_953_boolean__algebra__cancel_Oinf1,axiom,
    ! [A2: set_a,K: set_a,A: set_a,B4: set_a] :
      ( ( A2
        = ( inf_inf_set_a @ K @ A ) )
     => ( ( inf_inf_set_a @ A2 @ B4 )
        = ( inf_inf_set_a @ K @ ( inf_inf_set_a @ A @ B4 ) ) ) ) ).

% boolean_algebra_cancel.inf1
thf(fact_954_card__1__singletonE,axiom,
    ! [A2: set_a] :
      ( ( ( finite_card_a @ A2 )
        = one_one_nat )
     => ~ ! [X3: a] :
            ( A2
           != ( insert_a @ X3 @ bot_bot_set_a ) ) ) ).

% card_1_singletonE
thf(fact_955_boolean__algebra__cancel_Osup2,axiom,
    ! [B: set_a,K: set_a,B4: set_a,A: set_a] :
      ( ( B
        = ( sup_sup_set_a @ K @ B4 ) )
     => ( ( sup_sup_set_a @ A @ B )
        = ( sup_sup_set_a @ K @ ( sup_sup_set_a @ A @ B4 ) ) ) ) ).

% boolean_algebra_cancel.sup2
thf(fact_956_boolean__algebra__cancel_Osup1,axiom,
    ! [A2: set_a,K: set_a,A: set_a,B4: set_a] :
      ( ( A2
        = ( sup_sup_set_a @ K @ A ) )
     => ( ( sup_sup_set_a @ A2 @ B4 )
        = ( sup_sup_set_a @ K @ ( sup_sup_set_a @ A @ B4 ) ) ) ) ).

% boolean_algebra_cancel.sup1
thf(fact_957_card__Diff__singleton,axiom,
    ! [X: nat,A2: set_nat] :
      ( ( member_nat @ X @ A2 )
     => ( ( finite_card_nat @ ( minus_minus_set_nat @ A2 @ ( insert_nat @ X @ bot_bot_set_nat ) ) )
        = ( minus_minus_nat @ ( finite_card_nat @ A2 ) @ one_one_nat ) ) ) ).

% card_Diff_singleton
thf(fact_958_card__Diff__singleton,axiom,
    ! [X: a,A2: set_a] :
      ( ( member_a @ X @ A2 )
     => ( ( finite_card_a @ ( minus_minus_set_a @ A2 @ ( insert_a @ X @ bot_bot_set_a ) ) )
        = ( minus_minus_nat @ ( finite_card_a @ A2 ) @ one_one_nat ) ) ) ).

% card_Diff_singleton
thf(fact_959_card__Diff__singleton__if,axiom,
    ! [X: nat,A2: set_nat] :
      ( ( ( member_nat @ X @ A2 )
       => ( ( finite_card_nat @ ( minus_minus_set_nat @ A2 @ ( insert_nat @ X @ bot_bot_set_nat ) ) )
          = ( minus_minus_nat @ ( finite_card_nat @ A2 ) @ one_one_nat ) ) )
      & ( ~ ( member_nat @ X @ A2 )
       => ( ( finite_card_nat @ ( minus_minus_set_nat @ A2 @ ( insert_nat @ X @ bot_bot_set_nat ) ) )
          = ( finite_card_nat @ A2 ) ) ) ) ).

% card_Diff_singleton_if
thf(fact_960_card__Diff__singleton__if,axiom,
    ! [X: a,A2: set_a] :
      ( ( ( member_a @ X @ A2 )
       => ( ( finite_card_a @ ( minus_minus_set_a @ A2 @ ( insert_a @ X @ bot_bot_set_a ) ) )
          = ( minus_minus_nat @ ( finite_card_a @ A2 ) @ one_one_nat ) ) )
      & ( ~ ( member_a @ X @ A2 )
       => ( ( finite_card_a @ ( minus_minus_set_a @ A2 @ ( insert_a @ X @ bot_bot_set_a ) ) )
          = ( finite_card_a @ A2 ) ) ) ) ).

% card_Diff_singleton_if
thf(fact_961_card__insert__le__m1,axiom,
    ! [N2: nat,Y: set_a,X: a] :
      ( ( ord_less_nat @ zero_zero_nat @ N2 )
     => ( ( ord_less_eq_nat @ ( finite_card_a @ Y ) @ ( minus_minus_nat @ N2 @ one_one_nat ) )
       => ( ord_less_eq_nat @ ( finite_card_a @ ( insert_a @ X @ Y ) ) @ N2 ) ) ) ).

% card_insert_le_m1
thf(fact_962_additive__abelian__group_Osumset__iterated__r,axiom,
    ! [G: set_a,Addition: a > a > a,Zero: a,R: nat,A2: set_a] :
      ( ( pluenn1164192988769422572roup_a @ G @ Addition @ Zero )
     => ( ( ord_less_nat @ zero_zero_nat @ R )
       => ( ( pluenn1960970773371692859ated_a @ G @ Addition @ Zero @ A2 @ R )
          = ( pluenn3038260743871226533mset_a @ G @ Addition @ A2 @ ( pluenn1960970773371692859ated_a @ G @ Addition @ Zero @ A2 @ ( minus_minus_nat @ R @ one_one_nat ) ) ) ) ) ) ).

% additive_abelian_group.sumset_iterated_r
thf(fact_963_boolean__algebra_Odisj__zero__right,axiom,
    ! [X: set_a] :
      ( ( sup_sup_set_a @ X @ bot_bot_set_a )
      = X ) ).

% boolean_algebra.disj_zero_right
thf(fact_964_boolean__algebra_Odisj__conj__distrib2,axiom,
    ! [Y: set_a,Z: set_a,X: set_a] :
      ( ( sup_sup_set_a @ ( inf_inf_set_a @ Y @ Z ) @ X )
      = ( inf_inf_set_a @ ( sup_sup_set_a @ Y @ X ) @ ( sup_sup_set_a @ Z @ X ) ) ) ).

% boolean_algebra.disj_conj_distrib2
thf(fact_965_boolean__algebra_Oconj__disj__distrib2,axiom,
    ! [Y: set_a,Z: set_a,X: set_a] :
      ( ( inf_inf_set_a @ ( sup_sup_set_a @ Y @ Z ) @ X )
      = ( sup_sup_set_a @ ( inf_inf_set_a @ Y @ X ) @ ( inf_inf_set_a @ Z @ X ) ) ) ).

% boolean_algebra.conj_disj_distrib2
thf(fact_966_boolean__algebra_Odisj__conj__distrib,axiom,
    ! [X: set_a,Y: set_a,Z: set_a] :
      ( ( sup_sup_set_a @ X @ ( inf_inf_set_a @ Y @ Z ) )
      = ( inf_inf_set_a @ ( sup_sup_set_a @ X @ Y ) @ ( sup_sup_set_a @ X @ Z ) ) ) ).

% boolean_algebra.disj_conj_distrib
thf(fact_967_boolean__algebra_Oconj__disj__distrib,axiom,
    ! [X: set_a,Y: set_a,Z: set_a] :
      ( ( inf_inf_set_a @ X @ ( sup_sup_set_a @ Y @ Z ) )
      = ( sup_sup_set_a @ ( inf_inf_set_a @ X @ Y ) @ ( inf_inf_set_a @ X @ Z ) ) ) ).

% boolean_algebra.conj_disj_distrib
thf(fact_968_diff__shunt__var,axiom,
    ! [X: set_a,Y: set_a] :
      ( ( ( minus_minus_set_a @ X @ Y )
        = bot_bot_set_a )
      = ( ord_less_eq_set_a @ X @ Y ) ) ).

% diff_shunt_var
thf(fact_969_ex__min__if__finite,axiom,
    ! [S: set_nat] :
      ( ( finite_finite_nat @ S )
     => ( ( S != bot_bot_set_nat )
       => ? [X3: nat] :
            ( ( member_nat @ X3 @ S )
            & ~ ? [Xa: nat] :
                  ( ( member_nat @ Xa @ S )
                  & ( ord_less_nat @ Xa @ X3 ) ) ) ) ) ).

% ex_min_if_finite
thf(fact_970_infinite__growing,axiom,
    ! [X5: set_nat] :
      ( ( X5 != bot_bot_set_nat )
     => ( ! [X3: nat] :
            ( ( member_nat @ X3 @ X5 )
           => ? [Xa: nat] :
                ( ( member_nat @ Xa @ X5 )
                & ( ord_less_nat @ X3 @ Xa ) ) )
       => ~ ( finite_finite_nat @ X5 ) ) ) ).

% infinite_growing
thf(fact_971_finite__ranking__induct,axiom,
    ! [S: set_nat,P: set_nat > $o,F: nat > nat] :
      ( ( finite_finite_nat @ S )
     => ( ( P @ bot_bot_set_nat )
       => ( ! [X3: nat,S3: set_nat] :
              ( ( finite_finite_nat @ S3 )
             => ( ! [Y5: nat] :
                    ( ( member_nat @ Y5 @ S3 )
                   => ( ord_less_eq_nat @ ( F @ Y5 ) @ ( F @ X3 ) ) )
               => ( ( P @ S3 )
                 => ( P @ ( insert_nat @ X3 @ S3 ) ) ) ) )
         => ( P @ S ) ) ) ) ).

% finite_ranking_induct
thf(fact_972_finite__ranking__induct,axiom,
    ! [S: set_a,P: set_a > $o,F: a > nat] :
      ( ( finite_finite_a @ S )
     => ( ( P @ bot_bot_set_a )
       => ( ! [X3: a,S3: set_a] :
              ( ( finite_finite_a @ S3 )
             => ( ! [Y5: a] :
                    ( ( member_a @ Y5 @ S3 )
                   => ( ord_less_eq_nat @ ( F @ Y5 ) @ ( F @ X3 ) ) )
               => ( ( P @ S3 )
                 => ( P @ ( insert_a @ X3 @ S3 ) ) ) ) )
         => ( P @ S ) ) ) ) ).

% finite_ranking_induct
thf(fact_973_finite__linorder__max__induct,axiom,
    ! [A2: set_nat,P: set_nat > $o] :
      ( ( finite_finite_nat @ A2 )
     => ( ( P @ bot_bot_set_nat )
       => ( ! [B2: nat,A8: set_nat] :
              ( ( finite_finite_nat @ A8 )
             => ( ! [X4: nat] :
                    ( ( member_nat @ X4 @ A8 )
                   => ( ord_less_nat @ X4 @ B2 ) )
               => ( ( P @ A8 )
                 => ( P @ ( insert_nat @ B2 @ A8 ) ) ) ) )
         => ( P @ A2 ) ) ) ) ).

% finite_linorder_max_induct
thf(fact_974_monoid__axioms,axiom,
    group_monoid_a @ g @ addition @ zero ).

% monoid_axioms
thf(fact_975_card__le__if__inj__on__rel,axiom,
    ! [B: set_a,A2: set_nat,R: nat > a > $o] :
      ( ( finite_finite_a @ B )
     => ( ! [A3: nat] :
            ( ( member_nat @ A3 @ A2 )
           => ? [B10: a] :
                ( ( member_a @ B10 @ B )
                & ( R @ A3 @ B10 ) ) )
       => ( ! [A1: nat,A22: nat,B2: a] :
              ( ( member_nat @ A1 @ A2 )
             => ( ( member_nat @ A22 @ A2 )
               => ( ( member_a @ B2 @ B )
                 => ( ( R @ A1 @ B2 )
                   => ( ( R @ A22 @ B2 )
                     => ( A1 = A22 ) ) ) ) ) )
         => ( ord_less_eq_nat @ ( finite_card_nat @ A2 ) @ ( finite_card_a @ B ) ) ) ) ) ).

% card_le_if_inj_on_rel
thf(fact_976_card__le__if__inj__on__rel,axiom,
    ! [B: set_a,A2: set_a,R: a > a > $o] :
      ( ( finite_finite_a @ B )
     => ( ! [A3: a] :
            ( ( member_a @ A3 @ A2 )
           => ? [B10: a] :
                ( ( member_a @ B10 @ B )
                & ( R @ A3 @ B10 ) ) )
       => ( ! [A1: a,A22: a,B2: a] :
              ( ( member_a @ A1 @ A2 )
             => ( ( member_a @ A22 @ A2 )
               => ( ( member_a @ B2 @ B )
                 => ( ( R @ A1 @ B2 )
                   => ( ( R @ A22 @ B2 )
                     => ( A1 = A22 ) ) ) ) ) )
         => ( ord_less_eq_nat @ ( finite_card_a @ A2 ) @ ( finite_card_a @ B ) ) ) ) ) ).

% card_le_if_inj_on_rel
thf(fact_977_card__le__if__inj__on__rel,axiom,
    ! [B: set_nat,A2: set_nat,R: nat > nat > $o] :
      ( ( finite_finite_nat @ B )
     => ( ! [A3: nat] :
            ( ( member_nat @ A3 @ A2 )
           => ? [B10: nat] :
                ( ( member_nat @ B10 @ B )
                & ( R @ A3 @ B10 ) ) )
       => ( ! [A1: nat,A22: nat,B2: nat] :
              ( ( member_nat @ A1 @ A2 )
             => ( ( member_nat @ A22 @ A2 )
               => ( ( member_nat @ B2 @ B )
                 => ( ( R @ A1 @ B2 )
                   => ( ( R @ A22 @ B2 )
                     => ( A1 = A22 ) ) ) ) ) )
         => ( ord_less_eq_nat @ ( finite_card_nat @ A2 ) @ ( finite_card_nat @ B ) ) ) ) ) ).

% card_le_if_inj_on_rel
thf(fact_978_card__le__if__inj__on__rel,axiom,
    ! [B: set_nat,A2: set_a,R: a > nat > $o] :
      ( ( finite_finite_nat @ B )
     => ( ! [A3: a] :
            ( ( member_a @ A3 @ A2 )
           => ? [B10: nat] :
                ( ( member_nat @ B10 @ B )
                & ( R @ A3 @ B10 ) ) )
       => ( ! [A1: a,A22: a,B2: nat] :
              ( ( member_a @ A1 @ A2 )
             => ( ( member_a @ A22 @ A2 )
               => ( ( member_nat @ B2 @ B )
                 => ( ( R @ A1 @ B2 )
                   => ( ( R @ A22 @ B2 )
                     => ( A1 = A22 ) ) ) ) ) )
         => ( ord_less_eq_nat @ ( finite_card_a @ A2 ) @ ( finite_card_nat @ B ) ) ) ) ) ).

% card_le_if_inj_on_rel
thf(fact_979_commutative__monoid_Oaxioms_I1_J,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a] :
      ( ( group_4866109990395492029noid_a @ M @ Composition @ Unit )
     => ( group_monoid_a @ M @ Composition @ Unit ) ) ).

% commutative_monoid.axioms(1)
thf(fact_980_Group__Theory_Omonoid__def,axiom,
    ( group_monoid_nat
    = ( ^ [M5: set_nat,Composition2: nat > nat > nat,Unit2: nat] :
          ( ! [A4: nat,B3: nat] :
              ( ( member_nat @ A4 @ M5 )
             => ( ( member_nat @ B3 @ M5 )
               => ( member_nat @ ( Composition2 @ A4 @ B3 ) @ M5 ) ) )
          & ( member_nat @ Unit2 @ M5 )
          & ! [A4: nat,B3: nat,C5: nat] :
              ( ( member_nat @ A4 @ M5 )
             => ( ( member_nat @ B3 @ M5 )
               => ( ( member_nat @ C5 @ M5 )
                 => ( ( Composition2 @ ( Composition2 @ A4 @ B3 ) @ C5 )
                    = ( Composition2 @ A4 @ ( Composition2 @ B3 @ C5 ) ) ) ) ) )
          & ! [A4: nat] :
              ( ( member_nat @ A4 @ M5 )
             => ( ( Composition2 @ Unit2 @ A4 )
                = A4 ) )
          & ! [A4: nat] :
              ( ( member_nat @ A4 @ M5 )
             => ( ( Composition2 @ A4 @ Unit2 )
                = A4 ) ) ) ) ) ).

% Group_Theory.monoid_def
thf(fact_981_Group__Theory_Omonoid__def,axiom,
    ( group_monoid_a
    = ( ^ [M5: set_a,Composition2: a > a > a,Unit2: a] :
          ( ! [A4: a,B3: a] :
              ( ( member_a @ A4 @ M5 )
             => ( ( member_a @ B3 @ M5 )
               => ( member_a @ ( Composition2 @ A4 @ B3 ) @ M5 ) ) )
          & ( member_a @ Unit2 @ M5 )
          & ! [A4: a,B3: a,C5: a] :
              ( ( member_a @ A4 @ M5 )
             => ( ( member_a @ B3 @ M5 )
               => ( ( member_a @ C5 @ M5 )
                 => ( ( Composition2 @ ( Composition2 @ A4 @ B3 ) @ C5 )
                    = ( Composition2 @ A4 @ ( Composition2 @ B3 @ C5 ) ) ) ) ) )
          & ! [A4: a] :
              ( ( member_a @ A4 @ M5 )
             => ( ( Composition2 @ Unit2 @ A4 )
                = A4 ) )
          & ! [A4: a] :
              ( ( member_a @ A4 @ M5 )
             => ( ( Composition2 @ A4 @ Unit2 )
                = A4 ) ) ) ) ) ).

% Group_Theory.monoid_def
thf(fact_982_monoid_Ocomposition__closed,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat,A: nat,B4: nat] :
      ( ( group_monoid_nat @ M @ Composition @ Unit )
     => ( ( member_nat @ A @ M )
       => ( ( member_nat @ B4 @ M )
         => ( member_nat @ ( Composition @ A @ B4 ) @ M ) ) ) ) ).

% monoid.composition_closed
thf(fact_983_monoid_Ocomposition__closed,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a,A: a,B4: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( ( member_a @ A @ M )
       => ( ( member_a @ B4 @ M )
         => ( member_a @ ( Composition @ A @ B4 ) @ M ) ) ) ) ).

% monoid.composition_closed
thf(fact_984_monoid_Oinverse__unique,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat,U: nat,V2: nat,V3: nat] :
      ( ( group_monoid_nat @ M @ Composition @ Unit )
     => ( ( ( Composition @ U @ V2 )
          = Unit )
       => ( ( ( Composition @ V3 @ U )
            = Unit )
         => ( ( member_nat @ U @ M )
           => ( ( member_nat @ V3 @ M )
             => ( ( member_nat @ V2 @ M )
               => ( V3 = V2 ) ) ) ) ) ) ) ).

% monoid.inverse_unique
thf(fact_985_monoid_Oinverse__unique,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a,U: a,V2: a,V3: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( ( ( Composition @ U @ V2 )
          = Unit )
       => ( ( ( Composition @ V3 @ U )
            = Unit )
         => ( ( member_a @ U @ M )
           => ( ( member_a @ V3 @ M )
             => ( ( member_a @ V2 @ M )
               => ( V3 = V2 ) ) ) ) ) ) ) ).

% monoid.inverse_unique
thf(fact_986_monoid_Ounit__closed,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat] :
      ( ( group_monoid_nat @ M @ Composition @ Unit )
     => ( member_nat @ Unit @ M ) ) ).

% monoid.unit_closed
thf(fact_987_monoid_Ounit__closed,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( member_a @ Unit @ M ) ) ).

% monoid.unit_closed
thf(fact_988_monoid_Oassociative,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat,A: nat,B4: nat,C2: nat] :
      ( ( group_monoid_nat @ M @ Composition @ Unit )
     => ( ( member_nat @ A @ M )
       => ( ( member_nat @ B4 @ M )
         => ( ( member_nat @ C2 @ M )
           => ( ( Composition @ ( Composition @ A @ B4 ) @ C2 )
              = ( Composition @ A @ ( Composition @ B4 @ C2 ) ) ) ) ) ) ) ).

% monoid.associative
thf(fact_989_monoid_Oassociative,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a,A: a,B4: a,C2: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( ( member_a @ A @ M )
       => ( ( member_a @ B4 @ M )
         => ( ( member_a @ C2 @ M )
           => ( ( Composition @ ( Composition @ A @ B4 ) @ C2 )
              = ( Composition @ A @ ( Composition @ B4 @ C2 ) ) ) ) ) ) ) ).

% monoid.associative
thf(fact_990_monoid_Oright__unit,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat,A: nat] :
      ( ( group_monoid_nat @ M @ Composition @ Unit )
     => ( ( member_nat @ A @ M )
       => ( ( Composition @ A @ Unit )
          = A ) ) ) ).

% monoid.right_unit
thf(fact_991_monoid_Oright__unit,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a,A: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( ( member_a @ A @ M )
       => ( ( Composition @ A @ Unit )
          = A ) ) ) ).

% monoid.right_unit
thf(fact_992_monoid_Oleft__unit,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat,A: nat] :
      ( ( group_monoid_nat @ M @ Composition @ Unit )
     => ( ( member_nat @ A @ M )
       => ( ( Composition @ Unit @ A )
          = A ) ) ) ).

% monoid.left_unit
thf(fact_993_monoid_Oleft__unit,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a,A: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( ( member_a @ A @ M )
       => ( ( Composition @ Unit @ A )
          = A ) ) ) ).

% monoid.left_unit
thf(fact_994_Group__Theory_Omonoid_Ointro,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat] :
      ( ! [A3: nat,B2: nat] :
          ( ( member_nat @ A3 @ M )
         => ( ( member_nat @ B2 @ M )
           => ( member_nat @ ( Composition @ A3 @ B2 ) @ M ) ) )
     => ( ( member_nat @ Unit @ M )
       => ( ! [A3: nat,B2: nat,C6: nat] :
              ( ( member_nat @ A3 @ M )
             => ( ( member_nat @ B2 @ M )
               => ( ( member_nat @ C6 @ M )
                 => ( ( Composition @ ( Composition @ A3 @ B2 ) @ C6 )
                    = ( Composition @ A3 @ ( Composition @ B2 @ C6 ) ) ) ) ) )
         => ( ! [A3: nat] :
                ( ( member_nat @ A3 @ M )
               => ( ( Composition @ Unit @ A3 )
                  = A3 ) )
           => ( ! [A3: nat] :
                  ( ( member_nat @ A3 @ M )
                 => ( ( Composition @ A3 @ Unit )
                    = A3 ) )
             => ( group_monoid_nat @ M @ Composition @ Unit ) ) ) ) ) ) ).

% Group_Theory.monoid.intro
thf(fact_995_Group__Theory_Omonoid_Ointro,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a] :
      ( ! [A3: a,B2: a] :
          ( ( member_a @ A3 @ M )
         => ( ( member_a @ B2 @ M )
           => ( member_a @ ( Composition @ A3 @ B2 ) @ M ) ) )
     => ( ( member_a @ Unit @ M )
       => ( ! [A3: a,B2: a,C6: a] :
              ( ( member_a @ A3 @ M )
             => ( ( member_a @ B2 @ M )
               => ( ( member_a @ C6 @ M )
                 => ( ( Composition @ ( Composition @ A3 @ B2 ) @ C6 )
                    = ( Composition @ A3 @ ( Composition @ B2 @ C6 ) ) ) ) ) )
         => ( ! [A3: a] :
                ( ( member_a @ A3 @ M )
               => ( ( Composition @ Unit @ A3 )
                  = A3 ) )
           => ( ! [A3: a] :
                  ( ( member_a @ A3 @ M )
                 => ( ( Composition @ A3 @ Unit )
                    = A3 ) )
             => ( group_monoid_a @ M @ Composition @ Unit ) ) ) ) ) ) ).

% Group_Theory.monoid.intro
thf(fact_996_Group__Theory_Ogroup_Oaxioms_I1_J,axiom,
    ! [G: set_a,Composition: a > a > a,Unit: a] :
      ( ( group_group_a @ G @ Composition @ Unit )
     => ( group_monoid_a @ G @ Composition @ Unit ) ) ).

% Group_Theory.group.axioms(1)
thf(fact_997_monoid_Oinvertible__right__cancel,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat,X: nat,Y: nat,Z: nat] :
      ( ( group_monoid_nat @ M @ Composition @ Unit )
     => ( ( group_invertible_nat @ M @ Composition @ Unit @ X )
       => ( ( member_nat @ X @ M )
         => ( ( member_nat @ Y @ M )
           => ( ( member_nat @ Z @ M )
             => ( ( ( Composition @ Y @ X )
                  = ( Composition @ Z @ X ) )
                = ( Y = Z ) ) ) ) ) ) ) ).

% monoid.invertible_right_cancel
thf(fact_998_monoid_Oinvertible__right__cancel,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a,X: a,Y: a,Z: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( ( group_invertible_a @ M @ Composition @ Unit @ X )
       => ( ( member_a @ X @ M )
         => ( ( member_a @ Y @ M )
           => ( ( member_a @ Z @ M )
             => ( ( ( Composition @ Y @ X )
                  = ( Composition @ Z @ X ) )
                = ( Y = Z ) ) ) ) ) ) ) ).

% monoid.invertible_right_cancel
thf(fact_999_monoid_Oinvertible__left__cancel,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat,X: nat,Y: nat,Z: nat] :
      ( ( group_monoid_nat @ M @ Composition @ Unit )
     => ( ( group_invertible_nat @ M @ Composition @ Unit @ X )
       => ( ( member_nat @ X @ M )
         => ( ( member_nat @ Y @ M )
           => ( ( member_nat @ Z @ M )
             => ( ( ( Composition @ X @ Y )
                  = ( Composition @ X @ Z ) )
                = ( Y = Z ) ) ) ) ) ) ) ).

% monoid.invertible_left_cancel
thf(fact_1000_monoid_Oinvertible__left__cancel,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a,X: a,Y: a,Z: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( ( group_invertible_a @ M @ Composition @ Unit @ X )
       => ( ( member_a @ X @ M )
         => ( ( member_a @ Y @ M )
           => ( ( member_a @ Z @ M )
             => ( ( ( Composition @ X @ Y )
                  = ( Composition @ X @ Z ) )
                = ( Y = Z ) ) ) ) ) ) ) ).

% monoid.invertible_left_cancel
thf(fact_1001_monoid_Ocomposition__invertible,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat,X: nat,Y: nat] :
      ( ( group_monoid_nat @ M @ Composition @ Unit )
     => ( ( group_invertible_nat @ M @ Composition @ Unit @ X )
       => ( ( group_invertible_nat @ M @ Composition @ Unit @ Y )
         => ( ( member_nat @ X @ M )
           => ( ( member_nat @ Y @ M )
             => ( group_invertible_nat @ M @ Composition @ Unit @ ( Composition @ X @ Y ) ) ) ) ) ) ) ).

% monoid.composition_invertible
thf(fact_1002_monoid_Ocomposition__invertible,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a,X: a,Y: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( ( group_invertible_a @ M @ Composition @ Unit @ X )
       => ( ( group_invertible_a @ M @ Composition @ Unit @ Y )
         => ( ( member_a @ X @ M )
           => ( ( member_a @ Y @ M )
             => ( group_invertible_a @ M @ Composition @ Unit @ ( Composition @ X @ Y ) ) ) ) ) ) ) ).

% monoid.composition_invertible
thf(fact_1003_monoid_Ounit__invertible,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( group_invertible_a @ M @ Composition @ Unit @ Unit ) ) ).

% monoid.unit_invertible
thf(fact_1004_monoid_Oinvertible__def,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat,U: nat] :
      ( ( group_monoid_nat @ M @ Composition @ Unit )
     => ( ( member_nat @ U @ M )
       => ( ( group_invertible_nat @ M @ Composition @ Unit @ U )
          = ( ? [X2: nat] :
                ( ( member_nat @ X2 @ M )
                & ( ( Composition @ U @ X2 )
                  = Unit )
                & ( ( Composition @ X2 @ U )
                  = Unit ) ) ) ) ) ) ).

% monoid.invertible_def
thf(fact_1005_monoid_Oinvertible__def,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a,U: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( ( member_a @ U @ M )
       => ( ( group_invertible_a @ M @ Composition @ Unit @ U )
          = ( ? [X2: a] :
                ( ( member_a @ X2 @ M )
                & ( ( Composition @ U @ X2 )
                  = Unit )
                & ( ( Composition @ X2 @ U )
                  = Unit ) ) ) ) ) ) ).

% monoid.invertible_def
thf(fact_1006_monoid_OinvertibleI,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat,U: nat,V3: nat] :
      ( ( group_monoid_nat @ M @ Composition @ Unit )
     => ( ( ( Composition @ U @ V3 )
          = Unit )
       => ( ( ( Composition @ V3 @ U )
            = Unit )
         => ( ( member_nat @ U @ M )
           => ( ( member_nat @ V3 @ M )
             => ( group_invertible_nat @ M @ Composition @ Unit @ U ) ) ) ) ) ) ).

% monoid.invertibleI
thf(fact_1007_monoid_OinvertibleI,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a,U: a,V3: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( ( ( Composition @ U @ V3 )
          = Unit )
       => ( ( ( Composition @ V3 @ U )
            = Unit )
         => ( ( member_a @ U @ M )
           => ( ( member_a @ V3 @ M )
             => ( group_invertible_a @ M @ Composition @ Unit @ U ) ) ) ) ) ) ).

% monoid.invertibleI
thf(fact_1008_monoid_OinvertibleE,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat,U: nat] :
      ( ( group_monoid_nat @ M @ Composition @ Unit )
     => ( ( group_invertible_nat @ M @ Composition @ Unit @ U )
       => ( ! [V: nat] :
              ( ( ( ( Composition @ U @ V )
                  = Unit )
                & ( ( Composition @ V @ U )
                  = Unit ) )
             => ~ ( member_nat @ V @ M ) )
         => ~ ( member_nat @ U @ M ) ) ) ) ).

% monoid.invertibleE
thf(fact_1009_monoid_OinvertibleE,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a,U: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( ( group_invertible_a @ M @ Composition @ Unit @ U )
       => ( ! [V: a] :
              ( ( ( ( Composition @ U @ V )
                  = Unit )
                & ( ( Composition @ V @ U )
                  = Unit ) )
             => ~ ( member_a @ V @ M ) )
         => ~ ( member_a @ U @ M ) ) ) ) ).

% monoid.invertibleE
thf(fact_1010_monoid_Oinverse__unit,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( ( group_inverse_a @ M @ Composition @ Unit @ Unit )
        = Unit ) ) ).

% monoid.inverse_unit
thf(fact_1011_monoid_Oinverse__equality,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat,U: nat,V3: nat] :
      ( ( group_monoid_nat @ M @ Composition @ Unit )
     => ( ( ( Composition @ U @ V3 )
          = Unit )
       => ( ( ( Composition @ V3 @ U )
            = Unit )
         => ( ( member_nat @ U @ M )
           => ( ( member_nat @ V3 @ M )
             => ( ( group_inverse_nat @ M @ Composition @ Unit @ U )
                = V3 ) ) ) ) ) ) ).

% monoid.inverse_equality
thf(fact_1012_monoid_Oinverse__equality,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a,U: a,V3: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( ( ( Composition @ U @ V3 )
          = Unit )
       => ( ( ( Composition @ V3 @ U )
            = Unit )
         => ( ( member_a @ U @ M )
           => ( ( member_a @ V3 @ M )
             => ( ( group_inverse_a @ M @ Composition @ Unit @ U )
                = V3 ) ) ) ) ) ) ).

% monoid.inverse_equality
thf(fact_1013_monoid_Oinvertible__left__inverse,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat,U: nat] :
      ( ( group_monoid_nat @ M @ Composition @ Unit )
     => ( ( group_invertible_nat @ M @ Composition @ Unit @ U )
       => ( ( member_nat @ U @ M )
         => ( ( Composition @ ( group_inverse_nat @ M @ Composition @ Unit @ U ) @ U )
            = Unit ) ) ) ) ).

% monoid.invertible_left_inverse
thf(fact_1014_monoid_Oinvertible__left__inverse,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a,U: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( ( group_invertible_a @ M @ Composition @ Unit @ U )
       => ( ( member_a @ U @ M )
         => ( ( Composition @ ( group_inverse_a @ M @ Composition @ Unit @ U ) @ U )
            = Unit ) ) ) ) ).

% monoid.invertible_left_inverse
thf(fact_1015_monoid_Oinvertible__left__inverse2,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat,U: nat,V3: nat] :
      ( ( group_monoid_nat @ M @ Composition @ Unit )
     => ( ( group_invertible_nat @ M @ Composition @ Unit @ U )
       => ( ( member_nat @ U @ M )
         => ( ( member_nat @ V3 @ M )
           => ( ( Composition @ ( group_inverse_nat @ M @ Composition @ Unit @ U ) @ ( Composition @ U @ V3 ) )
              = V3 ) ) ) ) ) ).

% monoid.invertible_left_inverse2
thf(fact_1016_monoid_Oinvertible__left__inverse2,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a,U: a,V3: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( ( group_invertible_a @ M @ Composition @ Unit @ U )
       => ( ( member_a @ U @ M )
         => ( ( member_a @ V3 @ M )
           => ( ( Composition @ ( group_inverse_a @ M @ Composition @ Unit @ U ) @ ( Composition @ U @ V3 ) )
              = V3 ) ) ) ) ) ).

% monoid.invertible_left_inverse2
thf(fact_1017_monoid_Oinvertible__right__inverse,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat,U: nat] :
      ( ( group_monoid_nat @ M @ Composition @ Unit )
     => ( ( group_invertible_nat @ M @ Composition @ Unit @ U )
       => ( ( member_nat @ U @ M )
         => ( ( Composition @ U @ ( group_inverse_nat @ M @ Composition @ Unit @ U ) )
            = Unit ) ) ) ) ).

% monoid.invertible_right_inverse
thf(fact_1018_monoid_Oinvertible__right__inverse,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a,U: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( ( group_invertible_a @ M @ Composition @ Unit @ U )
       => ( ( member_a @ U @ M )
         => ( ( Composition @ U @ ( group_inverse_a @ M @ Composition @ Unit @ U ) )
            = Unit ) ) ) ) ).

% monoid.invertible_right_inverse
thf(fact_1019_monoid_Oinvertible__inverse__closed,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat,U: nat] :
      ( ( group_monoid_nat @ M @ Composition @ Unit )
     => ( ( group_invertible_nat @ M @ Composition @ Unit @ U )
       => ( ( member_nat @ U @ M )
         => ( member_nat @ ( group_inverse_nat @ M @ Composition @ Unit @ U ) @ M ) ) ) ) ).

% monoid.invertible_inverse_closed
thf(fact_1020_monoid_Oinvertible__inverse__closed,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a,U: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( ( group_invertible_a @ M @ Composition @ Unit @ U )
       => ( ( member_a @ U @ M )
         => ( member_a @ ( group_inverse_a @ M @ Composition @ Unit @ U ) @ M ) ) ) ) ).

% monoid.invertible_inverse_closed
thf(fact_1021_monoid_Oinvertible__right__inverse2,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat,U: nat,V3: nat] :
      ( ( group_monoid_nat @ M @ Composition @ Unit )
     => ( ( group_invertible_nat @ M @ Composition @ Unit @ U )
       => ( ( member_nat @ U @ M )
         => ( ( member_nat @ V3 @ M )
           => ( ( Composition @ U @ ( Composition @ ( group_inverse_nat @ M @ Composition @ Unit @ U ) @ V3 ) )
              = V3 ) ) ) ) ) ).

% monoid.invertible_right_inverse2
thf(fact_1022_monoid_Oinvertible__right__inverse2,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a,U: a,V3: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( ( group_invertible_a @ M @ Composition @ Unit @ U )
       => ( ( member_a @ U @ M )
         => ( ( member_a @ V3 @ M )
           => ( ( Composition @ U @ ( Composition @ ( group_inverse_a @ M @ Composition @ Unit @ U ) @ V3 ) )
              = V3 ) ) ) ) ) ).

% monoid.invertible_right_inverse2
thf(fact_1023_monoid_Oinvertible__inverse__inverse,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat,U: nat] :
      ( ( group_monoid_nat @ M @ Composition @ Unit )
     => ( ( group_invertible_nat @ M @ Composition @ Unit @ U )
       => ( ( member_nat @ U @ M )
         => ( ( group_inverse_nat @ M @ Composition @ Unit @ ( group_inverse_nat @ M @ Composition @ Unit @ U ) )
            = U ) ) ) ) ).

% monoid.invertible_inverse_inverse
thf(fact_1024_monoid_Oinvertible__inverse__inverse,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a,U: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( ( group_invertible_a @ M @ Composition @ Unit @ U )
       => ( ( member_a @ U @ M )
         => ( ( group_inverse_a @ M @ Composition @ Unit @ ( group_inverse_a @ M @ Composition @ Unit @ U ) )
            = U ) ) ) ) ).

% monoid.invertible_inverse_inverse
thf(fact_1025_monoid_Oinverse__composition__commute,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat,X: nat,Y: nat] :
      ( ( group_monoid_nat @ M @ Composition @ Unit )
     => ( ( group_invertible_nat @ M @ Composition @ Unit @ X )
       => ( ( group_invertible_nat @ M @ Composition @ Unit @ Y )
         => ( ( member_nat @ X @ M )
           => ( ( member_nat @ Y @ M )
             => ( ( group_inverse_nat @ M @ Composition @ Unit @ ( Composition @ X @ Y ) )
                = ( Composition @ ( group_inverse_nat @ M @ Composition @ Unit @ Y ) @ ( group_inverse_nat @ M @ Composition @ Unit @ X ) ) ) ) ) ) ) ) ).

% monoid.inverse_composition_commute
thf(fact_1026_monoid_Oinverse__composition__commute,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a,X: a,Y: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( ( group_invertible_a @ M @ Composition @ Unit @ X )
       => ( ( group_invertible_a @ M @ Composition @ Unit @ Y )
         => ( ( member_a @ X @ M )
           => ( ( member_a @ Y @ M )
             => ( ( group_inverse_a @ M @ Composition @ Unit @ ( Composition @ X @ Y ) )
                = ( Composition @ ( group_inverse_a @ M @ Composition @ Unit @ Y ) @ ( group_inverse_a @ M @ Composition @ Unit @ X ) ) ) ) ) ) ) ) ).

% monoid.inverse_composition_commute
thf(fact_1027_monoid_Oinvertible__inverse__invertible,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat,U: nat] :
      ( ( group_monoid_nat @ M @ Composition @ Unit )
     => ( ( group_invertible_nat @ M @ Composition @ Unit @ U )
       => ( ( member_nat @ U @ M )
         => ( group_invertible_nat @ M @ Composition @ Unit @ ( group_inverse_nat @ M @ Composition @ Unit @ U ) ) ) ) ) ).

% monoid.invertible_inverse_invertible
thf(fact_1028_monoid_Oinvertible__inverse__invertible,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a,U: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( ( group_invertible_a @ M @ Composition @ Unit @ U )
       => ( ( member_a @ U @ M )
         => ( group_invertible_a @ M @ Composition @ Unit @ ( group_inverse_a @ M @ Composition @ Unit @ U ) ) ) ) ) ).

% monoid.invertible_inverse_invertible
thf(fact_1029_monoid_Omem__UnitsI,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat,U: nat] :
      ( ( group_monoid_nat @ M @ Composition @ Unit )
     => ( ( group_invertible_nat @ M @ Composition @ Unit @ U )
       => ( ( member_nat @ U @ M )
         => ( member_nat @ U @ ( group_Units_nat @ M @ Composition @ Unit ) ) ) ) ) ).

% monoid.mem_UnitsI
thf(fact_1030_monoid_Omem__UnitsI,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a,U: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( ( group_invertible_a @ M @ Composition @ Unit @ U )
       => ( ( member_a @ U @ M )
         => ( member_a @ U @ ( group_Units_a @ M @ Composition @ Unit ) ) ) ) ) ).

% monoid.mem_UnitsI
thf(fact_1031_monoid_Omem__UnitsD,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat,U: nat] :
      ( ( group_monoid_nat @ M @ Composition @ Unit )
     => ( ( member_nat @ U @ ( group_Units_nat @ M @ Composition @ Unit ) )
       => ( ( group_invertible_nat @ M @ Composition @ Unit @ U )
          & ( member_nat @ U @ M ) ) ) ) ).

% monoid.mem_UnitsD
thf(fact_1032_monoid_Omem__UnitsD,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a,U: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( ( member_a @ U @ ( group_Units_a @ M @ Composition @ Unit ) )
       => ( ( group_invertible_a @ M @ Composition @ Unit @ U )
          & ( member_a @ U @ M ) ) ) ) ).

% monoid.mem_UnitsD
thf(fact_1033_monoid_Ogroup__of__Units,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( group_group_a @ ( group_Units_a @ M @ Composition @ Unit ) @ Composition @ Unit ) ) ).

% monoid.group_of_Units
thf(fact_1034_bounded__nat__set__is__finite,axiom,
    ! [N: set_nat,N2: nat] :
      ( ! [X3: nat] :
          ( ( member_nat @ X3 @ N )
         => ( ord_less_nat @ X3 @ N2 ) )
     => ( finite_finite_nat @ N ) ) ).

% bounded_nat_set_is_finite
thf(fact_1035_finite__nat__set__iff__bounded,axiom,
    ( finite_finite_nat
    = ( ^ [N5: set_nat] :
        ? [M4: nat] :
        ! [X2: nat] :
          ( ( member_nat @ X2 @ N5 )
         => ( ord_less_nat @ X2 @ M4 ) ) ) ) ).

% finite_nat_set_iff_bounded
thf(fact_1036_bounded__Max__nat,axiom,
    ! [P: nat > $o,X: nat,M: nat] :
      ( ( P @ X )
     => ( ! [X3: nat] :
            ( ( P @ X3 )
           => ( ord_less_eq_nat @ X3 @ M ) )
       => ~ ! [M6: nat] :
              ( ( P @ M6 )
             => ~ ! [X4: nat] :
                    ( ( P @ X4 )
                   => ( ord_less_eq_nat @ X4 @ M6 ) ) ) ) ) ).

% bounded_Max_nat
thf(fact_1037_finite__nat__set__iff__bounded__le,axiom,
    ( finite_finite_nat
    = ( ^ [N5: set_nat] :
        ? [M4: nat] :
        ! [X2: nat] :
          ( ( member_nat @ X2 @ N5 )
         => ( ord_less_eq_nat @ X2 @ M4 ) ) ) ) ).

% finite_nat_set_iff_bounded_le
thf(fact_1038_monoid_OsubgroupI,axiom,
    ! [M: set_nat,Composition: nat > nat > nat,Unit: nat,G: set_nat] :
      ( ( group_monoid_nat @ M @ Composition @ Unit )
     => ( ( ord_less_eq_set_nat @ G @ M )
       => ( ( member_nat @ Unit @ G )
         => ( ! [G2: nat,H: nat] :
                ( ( member_nat @ G2 @ G )
               => ( ( member_nat @ H @ G )
                 => ( member_nat @ ( Composition @ G2 @ H ) @ G ) ) )
           => ( ! [G2: nat] :
                  ( ( member_nat @ G2 @ G )
                 => ( group_invertible_nat @ M @ Composition @ Unit @ G2 ) )
             => ( ! [G2: nat] :
                    ( ( member_nat @ G2 @ G )
                   => ( member_nat @ ( group_inverse_nat @ M @ Composition @ Unit @ G2 ) @ G ) )
               => ( group_subgroup_nat @ G @ M @ Composition @ Unit ) ) ) ) ) ) ) ).

% monoid.subgroupI
thf(fact_1039_monoid_OsubgroupI,axiom,
    ! [M: set_a,Composition: a > a > a,Unit: a,G: set_a] :
      ( ( group_monoid_a @ M @ Composition @ Unit )
     => ( ( ord_less_eq_set_a @ G @ M )
       => ( ( member_a @ Unit @ G )
         => ( ! [G2: a,H: a] :
                ( ( member_a @ G2 @ G )
               => ( ( member_a @ H @ G )
                 => ( member_a @ ( Composition @ G2 @ H ) @ G ) ) )
           => ( ! [G2: a] :
                  ( ( member_a @ G2 @ G )
                 => ( group_invertible_a @ M @ Composition @ Unit @ G2 ) )
             => ( ! [G2: a] :
                    ( ( member_a @ G2 @ G )
                   => ( member_a @ ( group_inverse_a @ M @ Composition @ Unit @ G2 ) @ G ) )
               => ( group_subgroup_a @ G @ M @ Composition @ Unit ) ) ) ) ) ) ) ).

% monoid.subgroupI
thf(fact_1040_le__numeral__extra_I3_J,axiom,
    ord_less_eq_nat @ zero_zero_nat @ zero_zero_nat ).

% le_numeral_extra(3)
thf(fact_1041_less__numeral__extra_I3_J,axiom,
    ~ ( ord_less_nat @ zero_zero_nat @ zero_zero_nat ) ).

% less_numeral_extra(3)
thf(fact_1042_le__numeral__extra_I4_J,axiom,
    ord_less_eq_nat @ one_one_nat @ one_one_nat ).

% le_numeral_extra(4)
thf(fact_1043_less__numeral__extra_I4_J,axiom,
    ~ ( ord_less_nat @ one_one_nat @ one_one_nat ) ).

% less_numeral_extra(4)
thf(fact_1044_less__numeral__extra_I1_J,axiom,
    ord_less_nat @ zero_zero_nat @ one_one_nat ).

% less_numeral_extra(1)
thf(fact_1045_not__one__less__zero,axiom,
    ~ ( ord_less_nat @ one_one_nat @ zero_zero_nat ) ).

% not_one_less_zero
thf(fact_1046_zero__less__one,axiom,
    ord_less_nat @ zero_zero_nat @ one_one_nat ).

% zero_less_one
thf(fact_1047_dual__order_Orefl,axiom,
    ! [A: set_a] : ( ord_less_eq_set_a @ A @ A ) ).

% dual_order.refl
thf(fact_1048_dual__order_Orefl,axiom,
    ! [A: nat] : ( ord_less_eq_nat @ A @ A ) ).

% dual_order.refl
thf(fact_1049_order__refl,axiom,
    ! [X: set_a] : ( ord_less_eq_set_a @ X @ X ) ).

% order_refl
thf(fact_1050_order__refl,axiom,
    ! [X: nat] : ( ord_less_eq_nat @ X @ X ) ).

% order_refl
thf(fact_1051_order__antisym__conv,axiom,
    ! [Y: set_a,X: set_a] :
      ( ( ord_less_eq_set_a @ Y @ X )
     => ( ( ord_less_eq_set_a @ X @ Y )
        = ( X = Y ) ) ) ).

% order_antisym_conv
thf(fact_1052_order__antisym__conv,axiom,
    ! [Y: nat,X: nat] :
      ( ( ord_less_eq_nat @ Y @ X )
     => ( ( ord_less_eq_nat @ X @ Y )
        = ( X = Y ) ) ) ).

% order_antisym_conv
thf(fact_1053_linorder__le__cases,axiom,
    ! [X: nat,Y: nat] :
      ( ~ ( ord_less_eq_nat @ X @ Y )
     => ( ord_less_eq_nat @ Y @ X ) ) ).

% linorder_le_cases
thf(fact_1054_ord__le__eq__subst,axiom,
    ! [A: set_a,B4: set_a,F: set_a > set_a,C2: set_a] :
      ( ( ord_less_eq_set_a @ A @ B4 )
     => ( ( ( F @ B4 )
          = C2 )
       => ( ! [X3: set_a,Y2: set_a] :
              ( ( ord_less_eq_set_a @ X3 @ Y2 )
             => ( ord_less_eq_set_a @ ( F @ X3 ) @ ( F @ Y2 ) ) )
         => ( ord_less_eq_set_a @ ( F @ A ) @ C2 ) ) ) ) ).

% ord_le_eq_subst
thf(fact_1055_ord__le__eq__subst,axiom,
    ! [A: set_a,B4: set_a,F: set_a > nat,C2: nat] :
      ( ( ord_less_eq_set_a @ A @ B4 )
     => ( ( ( F @ B4 )
          = C2 )
       => ( ! [X3: set_a,Y2: set_a] :
              ( ( ord_less_eq_set_a @ X3 @ Y2 )
             => ( ord_less_eq_nat @ ( F @ X3 ) @ ( F @ Y2 ) ) )
         => ( ord_less_eq_nat @ ( F @ A ) @ C2 ) ) ) ) ).

% ord_le_eq_subst
thf(fact_1056_ord__le__eq__subst,axiom,
    ! [A: nat,B4: nat,F: nat > set_a,C2: set_a] :
      ( ( ord_less_eq_nat @ A @ B4 )
     => ( ( ( F @ B4 )
          = C2 )
       => ( ! [X3: nat,Y2: nat] :
              ( ( ord_less_eq_nat @ X3 @ Y2 )
             => ( ord_less_eq_set_a @ ( F @ X3 ) @ ( F @ Y2 ) ) )
         => ( ord_less_eq_set_a @ ( F @ A ) @ C2 ) ) ) ) ).

% ord_le_eq_subst
thf(fact_1057_ord__le__eq__subst,axiom,
    ! [A: nat,B4: nat,F: nat > nat,C2: nat] :
      ( ( ord_less_eq_nat @ A @ B4 )
     => ( ( ( F @ B4 )
          = C2 )
       => ( ! [X3: nat,Y2: nat] :
              ( ( ord_less_eq_nat @ X3 @ Y2 )
             => ( ord_less_eq_nat @ ( F @ X3 ) @ ( F @ Y2 ) ) )
         => ( ord_less_eq_nat @ ( F @ A ) @ C2 ) ) ) ) ).

% ord_le_eq_subst
thf(fact_1058_ord__eq__le__subst,axiom,
    ! [A: set_a,F: set_a > set_a,B4: set_a,C2: set_a] :
      ( ( A
        = ( F @ B4 ) )
     => ( ( ord_less_eq_set_a @ B4 @ C2 )
       => ( ! [X3: set_a,Y2: set_a] :
              ( ( ord_less_eq_set_a @ X3 @ Y2 )
             => ( ord_less_eq_set_a @ ( F @ X3 ) @ ( F @ Y2 ) ) )
         => ( ord_less_eq_set_a @ A @ ( F @ C2 ) ) ) ) ) ).

% ord_eq_le_subst
thf(fact_1059_ord__eq__le__subst,axiom,
    ! [A: nat,F: set_a > nat,B4: set_a,C2: set_a] :
      ( ( A
        = ( F @ B4 ) )
     => ( ( ord_less_eq_set_a @ B4 @ C2 )
       => ( ! [X3: set_a,Y2: set_a] :
              ( ( ord_less_eq_set_a @ X3 @ Y2 )
             => ( ord_less_eq_nat @ ( F @ X3 ) @ ( F @ Y2 ) ) )
         => ( ord_less_eq_nat @ A @ ( F @ C2 ) ) ) ) ) ).

% ord_eq_le_subst
thf(fact_1060_ord__eq__le__subst,axiom,
    ! [A: set_a,F: nat > set_a,B4: nat,C2: nat] :
      ( ( A
        = ( F @ B4 ) )
     => ( ( ord_less_eq_nat @ B4 @ C2 )
       => ( ! [X3: nat,Y2: nat] :
              ( ( ord_less_eq_nat @ X3 @ Y2 )
             => ( ord_less_eq_set_a @ ( F @ X3 ) @ ( F @ Y2 ) ) )
         => ( ord_less_eq_set_a @ A @ ( F @ C2 ) ) ) ) ) ).

% ord_eq_le_subst
thf(fact_1061_ord__eq__le__subst,axiom,
    ! [A: nat,F: nat > nat,B4: nat,C2: nat] :
      ( ( A
        = ( F @ B4 ) )
     => ( ( ord_less_eq_nat @ B4 @ C2 )
       => ( ! [X3: nat,Y2: nat] :
              ( ( ord_less_eq_nat @ X3 @ Y2 )
             => ( ord_less_eq_nat @ ( F @ X3 ) @ ( F @ Y2 ) ) )
         => ( ord_less_eq_nat @ A @ ( F @ C2 ) ) ) ) ) ).

% ord_eq_le_subst
thf(fact_1062_linorder__linear,axiom,
    ! [X: nat,Y: nat] :
      ( ( ord_less_eq_nat @ X @ Y )
      | ( ord_less_eq_nat @ Y @ X ) ) ).

% linorder_linear
thf(fact_1063_order__eq__refl,axiom,
    ! [X: set_a,Y: set_a] :
      ( ( X = Y )
     => ( ord_less_eq_set_a @ X @ Y ) ) ).

% order_eq_refl
thf(fact_1064_order__eq__refl,axiom,
    ! [X: nat,Y: nat] :
      ( ( X = Y )
     => ( ord_less_eq_nat @ X @ Y ) ) ).

% order_eq_refl
thf(fact_1065_order__subst2,axiom,
    ! [A: set_a,B4: set_a,F: set_a > set_a,C2: set_a] :
      ( ( ord_less_eq_set_a @ A @ B4 )
     => ( ( ord_less_eq_set_a @ ( F @ B4 ) @ C2 )
       => ( ! [X3: set_a,Y2: set_a] :
              ( ( ord_less_eq_set_a @ X3 @ Y2 )
             => ( ord_less_eq_set_a @ ( F @ X3 ) @ ( F @ Y2 ) ) )
         => ( ord_less_eq_set_a @ ( F @ A ) @ C2 ) ) ) ) ).

% order_subst2
thf(fact_1066_order__subst2,axiom,
    ! [A: set_a,B4: set_a,F: set_a > nat,C2: nat] :
      ( ( ord_less_eq_set_a @ A @ B4 )
     => ( ( ord_less_eq_nat @ ( F @ B4 ) @ C2 )
       => ( ! [X3: set_a,Y2: set_a] :
              ( ( ord_less_eq_set_a @ X3 @ Y2 )
             => ( ord_less_eq_nat @ ( F @ X3 ) @ ( F @ Y2 ) ) )
         => ( ord_less_eq_nat @ ( F @ A ) @ C2 ) ) ) ) ).

% order_subst2
thf(fact_1067_order__subst2,axiom,
    ! [A: nat,B4: nat,F: nat > set_a,C2: set_a] :
      ( ( ord_less_eq_nat @ A @ B4 )
     => ( ( ord_less_eq_set_a @ ( F @ B4 ) @ C2 )
       => ( ! [X3: nat,Y2: nat] :
              ( ( ord_less_eq_nat @ X3 @ Y2 )
             => ( ord_less_eq_set_a @ ( F @ X3 ) @ ( F @ Y2 ) ) )
         => ( ord_less_eq_set_a @ ( F @ A ) @ C2 ) ) ) ) ).

% order_subst2
thf(fact_1068_order__subst2,axiom,
    ! [A: nat,B4: nat,F: nat > nat,C2: nat] :
      ( ( ord_less_eq_nat @ A @ B4 )
     => ( ( ord_less_eq_nat @ ( F @ B4 ) @ C2 )
       => ( ! [X3: nat,Y2: nat] :
              ( ( ord_less_eq_nat @ X3 @ Y2 )
             => ( ord_less_eq_nat @ ( F @ X3 ) @ ( F @ Y2 ) ) )
         => ( ord_less_eq_nat @ ( F @ A ) @ C2 ) ) ) ) ).

% order_subst2
thf(fact_1069_order__subst1,axiom,
    ! [A: set_a,F: set_a > set_a,B4: set_a,C2: set_a] :
      ( ( ord_less_eq_set_a @ A @ ( F @ B4 ) )
     => ( ( ord_less_eq_set_a @ B4 @ C2 )
       => ( ! [X3: set_a,Y2: set_a] :
              ( ( ord_less_eq_set_a @ X3 @ Y2 )
             => ( ord_less_eq_set_a @ ( F @ X3 ) @ ( F @ Y2 ) ) )
         => ( ord_less_eq_set_a @ A @ ( F @ C2 ) ) ) ) ) ).

% order_subst1
thf(fact_1070_order__subst1,axiom,
    ! [A: set_a,F: nat > set_a,B4: nat,C2: nat] :
      ( ( ord_less_eq_set_a @ A @ ( F @ B4 ) )
     => ( ( ord_less_eq_nat @ B4 @ C2 )
       => ( ! [X3: nat,Y2: nat] :
              ( ( ord_less_eq_nat @ X3 @ Y2 )
             => ( ord_less_eq_set_a @ ( F @ X3 ) @ ( F @ Y2 ) ) )
         => ( ord_less_eq_set_a @ A @ ( F @ C2 ) ) ) ) ) ).

% order_subst1
thf(fact_1071_order__subst1,axiom,
    ! [A: nat,F: set_a > nat,B4: set_a,C2: set_a] :
      ( ( ord_less_eq_nat @ A @ ( F @ B4 ) )
     => ( ( ord_less_eq_set_a @ B4 @ C2 )
       => ( ! [X3: set_a,Y2: set_a] :
              ( ( ord_less_eq_set_a @ X3 @ Y2 )
             => ( ord_less_eq_nat @ ( F @ X3 ) @ ( F @ Y2 ) ) )
         => ( ord_less_eq_nat @ A @ ( F @ C2 ) ) ) ) ) ).

% order_subst1
thf(fact_1072_order__subst1,axiom,
    ! [A: nat,F: nat > nat,B4: nat,C2: nat] :
      ( ( ord_less_eq_nat @ A @ ( F @ B4 ) )
     => ( ( ord_less_eq_nat @ B4 @ C2 )
       => ( ! [X3: nat,Y2: nat] :
              ( ( ord_less_eq_nat @ X3 @ Y2 )
             => ( ord_less_eq_nat @ ( F @ X3 ) @ ( F @ Y2 ) ) )
         => ( ord_less_eq_nat @ A @ ( F @ C2 ) ) ) ) ) ).

% order_subst1
thf(fact_1073_Orderings_Oorder__eq__iff,axiom,
    ( ( ^ [Y4: set_a,Z2: set_a] : ( Y4 = Z2 ) )
    = ( ^ [A4: set_a,B3: set_a] :
          ( ( ord_less_eq_set_a @ A4 @ B3 )
          & ( ord_less_eq_set_a @ B3 @ A4 ) ) ) ) ).

% Orderings.order_eq_iff
thf(fact_1074_Orderings_Oorder__eq__iff,axiom,
    ( ( ^ [Y4: nat,Z2: nat] : ( Y4 = Z2 ) )
    = ( ^ [A4: nat,B3: nat] :
          ( ( ord_less_eq_nat @ A4 @ B3 )
          & ( ord_less_eq_nat @ B3 @ A4 ) ) ) ) ).

% Orderings.order_eq_iff
thf(fact_1075_antisym,axiom,
    ! [A: set_a,B4: set_a] :
      ( ( ord_less_eq_set_a @ A @ B4 )
     => ( ( ord_less_eq_set_a @ B4 @ A )
       => ( A = B4 ) ) ) ).

% antisym
thf(fact_1076_antisym,axiom,
    ! [A: nat,B4: nat] :
      ( ( ord_less_eq_nat @ A @ B4 )
     => ( ( ord_less_eq_nat @ B4 @ A )
       => ( A = B4 ) ) ) ).

% antisym
thf(fact_1077_dual__order_Otrans,axiom,
    ! [B4: set_a,A: set_a,C2: set_a] :
      ( ( ord_less_eq_set_a @ B4 @ A )
     => ( ( ord_less_eq_set_a @ C2 @ B4 )
       => ( ord_less_eq_set_a @ C2 @ A ) ) ) ).

% dual_order.trans
thf(fact_1078_dual__order_Otrans,axiom,
    ! [B4: nat,A: nat,C2: nat] :
      ( ( ord_less_eq_nat @ B4 @ A )
     => ( ( ord_less_eq_nat @ C2 @ B4 )
       => ( ord_less_eq_nat @ C2 @ A ) ) ) ).

% dual_order.trans
thf(fact_1079_dual__order_Oantisym,axiom,
    ! [B4: set_a,A: set_a] :
      ( ( ord_less_eq_set_a @ B4 @ A )
     => ( ( ord_less_eq_set_a @ A @ B4 )
       => ( A = B4 ) ) ) ).

% dual_order.antisym
thf(fact_1080_dual__order_Oantisym,axiom,
    ! [B4: nat,A: nat] :
      ( ( ord_less_eq_nat @ B4 @ A )
     => ( ( ord_less_eq_nat @ A @ B4 )
       => ( A = B4 ) ) ) ).

% dual_order.antisym
thf(fact_1081_dual__order_Oeq__iff,axiom,
    ( ( ^ [Y4: set_a,Z2: set_a] : ( Y4 = Z2 ) )
    = ( ^ [A4: set_a,B3: set_a] :
          ( ( ord_less_eq_set_a @ B3 @ A4 )
          & ( ord_less_eq_set_a @ A4 @ B3 ) ) ) ) ).

% dual_order.eq_iff
thf(fact_1082_dual__order_Oeq__iff,axiom,
    ( ( ^ [Y4: nat,Z2: nat] : ( Y4 = Z2 ) )
    = ( ^ [A4: nat,B3: nat] :
          ( ( ord_less_eq_nat @ B3 @ A4 )
          & ( ord_less_eq_nat @ A4 @ B3 ) ) ) ) ).

% dual_order.eq_iff
thf(fact_1083_linorder__wlog,axiom,
    ! [P: nat > nat > $o,A: nat,B4: nat] :
      ( ! [A3: nat,B2: nat] :
          ( ( ord_less_eq_nat @ A3 @ B2 )
         => ( P @ A3 @ B2 ) )
     => ( ! [A3: nat,B2: nat] :
            ( ( P @ B2 @ A3 )
           => ( P @ A3 @ B2 ) )
       => ( P @ A @ B4 ) ) ) ).

% linorder_wlog
thf(fact_1084_order__trans,axiom,
    ! [X: set_a,Y: set_a,Z: set_a] :
      ( ( ord_less_eq_set_a @ X @ Y )
     => ( ( ord_less_eq_set_a @ Y @ Z )
       => ( ord_less_eq_set_a @ X @ Z ) ) ) ).

% order_trans
thf(fact_1085_order__trans,axiom,
    ! [X: nat,Y: nat,Z: nat] :
      ( ( ord_less_eq_nat @ X @ Y )
     => ( ( ord_less_eq_nat @ Y @ Z )
       => ( ord_less_eq_nat @ X @ Z ) ) ) ).

% order_trans
thf(fact_1086_order_Otrans,axiom,
    ! [A: set_a,B4: set_a,C2: set_a] :
      ( ( ord_less_eq_set_a @ A @ B4 )
     => ( ( ord_less_eq_set_a @ B4 @ C2 )
       => ( ord_less_eq_set_a @ A @ C2 ) ) ) ).

% order.trans
thf(fact_1087_order_Otrans,axiom,
    ! [A: nat,B4: nat,C2: nat] :
      ( ( ord_less_eq_nat @ A @ B4 )
     => ( ( ord_less_eq_nat @ B4 @ C2 )
       => ( ord_less_eq_nat @ A @ C2 ) ) ) ).

% order.trans
thf(fact_1088_order__antisym,axiom,
    ! [X: set_a,Y: set_a] :
      ( ( ord_less_eq_set_a @ X @ Y )
     => ( ( ord_less_eq_set_a @ Y @ X )
       => ( X = Y ) ) ) ).

% order_antisym
thf(fact_1089_order__antisym,axiom,
    ! [X: nat,Y: nat] :
      ( ( ord_less_eq_nat @ X @ Y )
     => ( ( ord_less_eq_nat @ Y @ X )
       => ( X = Y ) ) ) ).

% order_antisym
thf(fact_1090_ord__le__eq__trans,axiom,
    ! [A: set_a,B4: set_a,C2: set_a] :
      ( ( ord_less_eq_set_a @ A @ B4 )
     => ( ( B4 = C2 )
       => ( ord_less_eq_set_a @ A @ C2 ) ) ) ).

% ord_le_eq_trans
thf(fact_1091_ord__le__eq__trans,axiom,
    ! [A: nat,B4: nat,C2: nat] :
      ( ( ord_less_eq_nat @ A @ B4 )
     => ( ( B4 = C2 )
       => ( ord_less_eq_nat @ A @ C2 ) ) ) ).

% ord_le_eq_trans
thf(fact_1092_ord__eq__le__trans,axiom,
    ! [A: set_a,B4: set_a,C2: set_a] :
      ( ( A = B4 )
     => ( ( ord_less_eq_set_a @ B4 @ C2 )
       => ( ord_less_eq_set_a @ A @ C2 ) ) ) ).

% ord_eq_le_trans
thf(fact_1093_ord__eq__le__trans,axiom,
    ! [A: nat,B4: nat,C2: nat] :
      ( ( A = B4 )
     => ( ( ord_less_eq_nat @ B4 @ C2 )
       => ( ord_less_eq_nat @ A @ C2 ) ) ) ).

% ord_eq_le_trans
thf(fact_1094_order__class_Oorder__eq__iff,axiom,
    ( ( ^ [Y4: set_a,Z2: set_a] : ( Y4 = Z2 ) )
    = ( ^ [X2: set_a,Y3: set_a] :
          ( ( ord_less_eq_set_a @ X2 @ Y3 )
          & ( ord_less_eq_set_a @ Y3 @ X2 ) ) ) ) ).

% order_class.order_eq_iff
thf(fact_1095_order__class_Oorder__eq__iff,axiom,
    ( ( ^ [Y4: nat,Z2: nat] : ( Y4 = Z2 ) )
    = ( ^ [X2: nat,Y3: nat] :
          ( ( ord_less_eq_nat @ X2 @ Y3 )
          & ( ord_less_eq_nat @ Y3 @ X2 ) ) ) ) ).

% order_class.order_eq_iff
thf(fact_1096_le__cases3,axiom,
    ! [X: nat,Y: nat,Z: nat] :
      ( ( ( ord_less_eq_nat @ X @ Y )
       => ~ ( ord_less_eq_nat @ Y @ Z ) )
     => ( ( ( ord_less_eq_nat @ Y @ X )
         => ~ ( ord_less_eq_nat @ X @ Z ) )
       => ( ( ( ord_less_eq_nat @ X @ Z )
           => ~ ( ord_less_eq_nat @ Z @ Y ) )
         => ( ( ( ord_less_eq_nat @ Z @ Y )
             => ~ ( ord_less_eq_nat @ Y @ X ) )
           => ( ( ( ord_less_eq_nat @ Y @ Z )
               => ~ ( ord_less_eq_nat @ Z @ X ) )
             => ~ ( ( ord_less_eq_nat @ Z @ X )
                 => ~ ( ord_less_eq_nat @ X @ Y ) ) ) ) ) ) ) ).

% le_cases3
thf(fact_1097_nle__le,axiom,
    ! [A: nat,B4: nat] :
      ( ( ~ ( ord_less_eq_nat @ A @ B4 ) )
      = ( ( ord_less_eq_nat @ B4 @ A )
        & ( B4 != A ) ) ) ).

% nle_le
thf(fact_1098_order__less__imp__not__less,axiom,
    ! [X: nat,Y: nat] :
      ( ( ord_less_nat @ X @ Y )
     => ~ ( ord_less_nat @ Y @ X ) ) ).

% order_less_imp_not_less
thf(fact_1099_order__less__imp__not__eq2,axiom,
    ! [X: nat,Y: nat] :
      ( ( ord_less_nat @ X @ Y )
     => ( Y != X ) ) ).

% order_less_imp_not_eq2
thf(fact_1100_order__less__imp__not__eq,axiom,
    ! [X: nat,Y: nat] :
      ( ( ord_less_nat @ X @ Y )
     => ( X != Y ) ) ).

% order_less_imp_not_eq
thf(fact_1101_linorder__less__linear,axiom,
    ! [X: nat,Y: nat] :
      ( ( ord_less_nat @ X @ Y )
      | ( X = Y )
      | ( ord_less_nat @ Y @ X ) ) ).

% linorder_less_linear
thf(fact_1102_order__less__imp__triv,axiom,
    ! [X: nat,Y: nat,P: $o] :
      ( ( ord_less_nat @ X @ Y )
     => ( ( ord_less_nat @ Y @ X )
       => P ) ) ).

% order_less_imp_triv
thf(fact_1103_order__less__not__sym,axiom,
    ! [X: nat,Y: nat] :
      ( ( ord_less_nat @ X @ Y )
     => ~ ( ord_less_nat @ Y @ X ) ) ).

% order_less_not_sym
thf(fact_1104_order__less__subst2,axiom,
    ! [A: nat,B4: nat,F: nat > nat,C2: nat] :
      ( ( ord_less_nat @ A @ B4 )
     => ( ( ord_less_nat @ ( F @ B4 ) @ C2 )
       => ( ! [X3: nat,Y2: nat] :
              ( ( ord_less_nat @ X3 @ Y2 )
             => ( ord_less_nat @ ( F @ X3 ) @ ( F @ Y2 ) ) )
         => ( ord_less_nat @ ( F @ A ) @ C2 ) ) ) ) ).

% order_less_subst2
thf(fact_1105_order__less__subst1,axiom,
    ! [A: nat,F: nat > nat,B4: nat,C2: nat] :
      ( ( ord_less_nat @ A @ ( F @ B4 ) )
     => ( ( ord_less_nat @ B4 @ C2 )
       => ( ! [X3: nat,Y2: nat] :
              ( ( ord_less_nat @ X3 @ Y2 )
             => ( ord_less_nat @ ( F @ X3 ) @ ( F @ Y2 ) ) )
         => ( ord_less_nat @ A @ ( F @ C2 ) ) ) ) ) ).

% order_less_subst1
thf(fact_1106_order__less__irrefl,axiom,
    ! [X: nat] :
      ~ ( ord_less_nat @ X @ X ) ).

% order_less_irrefl
thf(fact_1107_ord__less__eq__subst,axiom,
    ! [A: nat,B4: nat,F: nat > nat,C2: nat] :
      ( ( ord_less_nat @ A @ B4 )
     => ( ( ( F @ B4 )
          = C2 )
       => ( ! [X3: nat,Y2: nat] :
              ( ( ord_less_nat @ X3 @ Y2 )
             => ( ord_less_nat @ ( F @ X3 ) @ ( F @ Y2 ) ) )
         => ( ord_less_nat @ ( F @ A ) @ C2 ) ) ) ) ).

% ord_less_eq_subst
thf(fact_1108_ord__eq__less__subst,axiom,
    ! [A: nat,F: nat > nat,B4: nat,C2: nat] :
      ( ( A
        = ( F @ B4 ) )
     => ( ( ord_less_nat @ B4 @ C2 )
       => ( ! [X3: nat,Y2: nat] :
              ( ( ord_less_nat @ X3 @ Y2 )
             => ( ord_less_nat @ ( F @ X3 ) @ ( F @ Y2 ) ) )
         => ( ord_less_nat @ A @ ( F @ C2 ) ) ) ) ) ).

% ord_eq_less_subst
thf(fact_1109_order__less__trans,axiom,
    ! [X: nat,Y: nat,Z: nat] :
      ( ( ord_less_nat @ X @ Y )
     => ( ( ord_less_nat @ Y @ Z )
       => ( ord_less_nat @ X @ Z ) ) ) ).

% order_less_trans
thf(fact_1110_order__less__asym_H,axiom,
    ! [A: nat,B4: nat] :
      ( ( ord_less_nat @ A @ B4 )
     => ~ ( ord_less_nat @ B4 @ A ) ) ).

% order_less_asym'
thf(fact_1111_linorder__neq__iff,axiom,
    ! [X: nat,Y: nat] :
      ( ( X != Y )
      = ( ( ord_less_nat @ X @ Y )
        | ( ord_less_nat @ Y @ X ) ) ) ).

% linorder_neq_iff
thf(fact_1112_order__less__asym,axiom,
    ! [X: nat,Y: nat] :
      ( ( ord_less_nat @ X @ Y )
     => ~ ( ord_less_nat @ Y @ X ) ) ).

% order_less_asym
thf(fact_1113_linorder__neqE,axiom,
    ! [X: nat,Y: nat] :
      ( ( X != Y )
     => ( ~ ( ord_less_nat @ X @ Y )
       => ( ord_less_nat @ Y @ X ) ) ) ).

% linorder_neqE
thf(fact_1114_dual__order_Ostrict__implies__not__eq,axiom,
    ! [B4: nat,A: nat] :
      ( ( ord_less_nat @ B4 @ A )
     => ( A != B4 ) ) ).

% dual_order.strict_implies_not_eq
thf(fact_1115_order_Ostrict__implies__not__eq,axiom,
    ! [A: nat,B4: nat] :
      ( ( ord_less_nat @ A @ B4 )
     => ( A != B4 ) ) ).

% order.strict_implies_not_eq
thf(fact_1116_dual__order_Ostrict__trans,axiom,
    ! [B4: nat,A: nat,C2: nat] :
      ( ( ord_less_nat @ B4 @ A )
     => ( ( ord_less_nat @ C2 @ B4 )
       => ( ord_less_nat @ C2 @ A ) ) ) ).

% dual_order.strict_trans
thf(fact_1117_not__less__iff__gr__or__eq,axiom,
    ! [X: nat,Y: nat] :
      ( ( ~ ( ord_less_nat @ X @ Y ) )
      = ( ( ord_less_nat @ Y @ X )
        | ( X = Y ) ) ) ).

% not_less_iff_gr_or_eq
thf(fact_1118_order_Ostrict__trans,axiom,
    ! [A: nat,B4: nat,C2: nat] :
      ( ( ord_less_nat @ A @ B4 )
     => ( ( ord_less_nat @ B4 @ C2 )
       => ( ord_less_nat @ A @ C2 ) ) ) ).

% order.strict_trans
thf(fact_1119_linorder__less__wlog,axiom,
    ! [P: nat > nat > $o,A: nat,B4: nat] :
      ( ! [A3: nat,B2: nat] :
          ( ( ord_less_nat @ A3 @ B2 )
         => ( P @ A3 @ B2 ) )
     => ( ! [A3: nat] : ( P @ A3 @ A3 )
       => ( ! [A3: nat,B2: nat] :
              ( ( P @ B2 @ A3 )
             => ( P @ A3 @ B2 ) )
         => ( P @ A @ B4 ) ) ) ) ).

% linorder_less_wlog
thf(fact_1120_exists__least__iff,axiom,
    ( ( ^ [P2: nat > $o] :
        ? [X6: nat] : ( P2 @ X6 ) )
    = ( ^ [P3: nat > $o] :
        ? [N4: nat] :
          ( ( P3 @ N4 )
          & ! [M4: nat] :
              ( ( ord_less_nat @ M4 @ N4 )
             => ~ ( P3 @ M4 ) ) ) ) ) ).

% exists_least_iff
thf(fact_1121_dual__order_Oirrefl,axiom,
    ! [A: nat] :
      ~ ( ord_less_nat @ A @ A ) ).

% dual_order.irrefl
thf(fact_1122_dual__order_Oasym,axiom,
    ! [B4: nat,A: nat] :
      ( ( ord_less_nat @ B4 @ A )
     => ~ ( ord_less_nat @ A @ B4 ) ) ).

% dual_order.asym
thf(fact_1123_linorder__cases,axiom,
    ! [X: nat,Y: nat] :
      ( ~ ( ord_less_nat @ X @ Y )
     => ( ( X != Y )
       => ( ord_less_nat @ Y @ X ) ) ) ).

% linorder_cases
thf(fact_1124_antisym__conv3,axiom,
    ! [Y: nat,X: nat] :
      ( ~ ( ord_less_nat @ Y @ X )
     => ( ( ~ ( ord_less_nat @ X @ Y ) )
        = ( X = Y ) ) ) ).

% antisym_conv3
thf(fact_1125_less__induct,axiom,
    ! [P: nat > $o,A: nat] :
      ( ! [X3: nat] :
          ( ! [Y5: nat] :
              ( ( ord_less_nat @ Y5 @ X3 )
             => ( P @ Y5 ) )
         => ( P @ X3 ) )
     => ( P @ A ) ) ).

% less_induct
thf(fact_1126_ord__less__eq__trans,axiom,
    ! [A: nat,B4: nat,C2: nat] :
      ( ( ord_less_nat @ A @ B4 )
     => ( ( B4 = C2 )
       => ( ord_less_nat @ A @ C2 ) ) ) ).

% ord_less_eq_trans
thf(fact_1127_ord__eq__less__trans,axiom,
    ! [A: nat,B4: nat,C2: nat] :
      ( ( A = B4 )
     => ( ( ord_less_nat @ B4 @ C2 )
       => ( ord_less_nat @ A @ C2 ) ) ) ).

% ord_eq_less_trans
thf(fact_1128_order_Oasym,axiom,
    ! [A: nat,B4: nat] :
      ( ( ord_less_nat @ A @ B4 )
     => ~ ( ord_less_nat @ B4 @ A ) ) ).

% order.asym
thf(fact_1129_less__imp__neq,axiom,
    ! [X: nat,Y: nat] :
      ( ( ord_less_nat @ X @ Y )
     => ( X != Y ) ) ).

% less_imp_neq
thf(fact_1130_gt__ex,axiom,
    ! [X: nat] :
    ? [X_1: nat] : ( ord_less_nat @ X @ X_1 ) ).

% gt_ex
thf(fact_1131_leD,axiom,
    ! [Y: set_a,X: set_a] :
      ( ( ord_less_eq_set_a @ Y @ X )
     => ~ ( ord_less_set_a @ X @ Y ) ) ).

% leD
thf(fact_1132_leD,axiom,
    ! [Y: nat,X: nat] :
      ( ( ord_less_eq_nat @ Y @ X )
     => ~ ( ord_less_nat @ X @ Y ) ) ).

% leD
thf(fact_1133_leI,axiom,
    ! [X: nat,Y: nat] :
      ( ~ ( ord_less_nat @ X @ Y )
     => ( ord_less_eq_nat @ Y @ X ) ) ).

% leI
thf(fact_1134_nless__le,axiom,
    ! [A: set_a,B4: set_a] :
      ( ( ~ ( ord_less_set_a @ A @ B4 ) )
      = ( ~ ( ord_less_eq_set_a @ A @ B4 )
        | ( A = B4 ) ) ) ).

% nless_le
thf(fact_1135_nless__le,axiom,
    ! [A: nat,B4: nat] :
      ( ( ~ ( ord_less_nat @ A @ B4 ) )
      = ( ~ ( ord_less_eq_nat @ A @ B4 )
        | ( A = B4 ) ) ) ).

% nless_le
thf(fact_1136_antisym__conv1,axiom,
    ! [X: set_a,Y: set_a] :
      ( ~ ( ord_less_set_a @ X @ Y )
     => ( ( ord_less_eq_set_a @ X @ Y )
        = ( X = Y ) ) ) ).

% antisym_conv1
thf(fact_1137_antisym__conv1,axiom,
    ! [X: nat,Y: nat] :
      ( ~ ( ord_less_nat @ X @ Y )
     => ( ( ord_less_eq_nat @ X @ Y )
        = ( X = Y ) ) ) ).

% antisym_conv1
thf(fact_1138_antisym__conv2,axiom,
    ! [X: set_a,Y: set_a] :
      ( ( ord_less_eq_set_a @ X @ Y )
     => ( ( ~ ( ord_less_set_a @ X @ Y ) )
        = ( X = Y ) ) ) ).

% antisym_conv2
thf(fact_1139_antisym__conv2,axiom,
    ! [X: nat,Y: nat] :
      ( ( ord_less_eq_nat @ X @ Y )
     => ( ( ~ ( ord_less_nat @ X @ Y ) )
        = ( X = Y ) ) ) ).

% antisym_conv2
thf(fact_1140_less__le__not__le,axiom,
    ( ord_less_set_a
    = ( ^ [X2: set_a,Y3: set_a] :
          ( ( ord_less_eq_set_a @ X2 @ Y3 )
          & ~ ( ord_less_eq_set_a @ Y3 @ X2 ) ) ) ) ).

% less_le_not_le
thf(fact_1141_less__le__not__le,axiom,
    ( ord_less_nat
    = ( ^ [X2: nat,Y3: nat] :
          ( ( ord_less_eq_nat @ X2 @ Y3 )
          & ~ ( ord_less_eq_nat @ Y3 @ X2 ) ) ) ) ).

% less_le_not_le
thf(fact_1142_not__le__imp__less,axiom,
    ! [Y: nat,X: nat] :
      ( ~ ( ord_less_eq_nat @ Y @ X )
     => ( ord_less_nat @ X @ Y ) ) ).

% not_le_imp_less
thf(fact_1143_order_Oorder__iff__strict,axiom,
    ( ord_less_eq_set_a
    = ( ^ [A4: set_a,B3: set_a] :
          ( ( ord_less_set_a @ A4 @ B3 )
          | ( A4 = B3 ) ) ) ) ).

% order.order_iff_strict
thf(fact_1144_order_Oorder__iff__strict,axiom,
    ( ord_less_eq_nat
    = ( ^ [A4: nat,B3: nat] :
          ( ( ord_less_nat @ A4 @ B3 )
          | ( A4 = B3 ) ) ) ) ).

% order.order_iff_strict
thf(fact_1145_order_Ostrict__iff__order,axiom,
    ( ord_less_set_a
    = ( ^ [A4: set_a,B3: set_a] :
          ( ( ord_less_eq_set_a @ A4 @ B3 )
          & ( A4 != B3 ) ) ) ) ).

% order.strict_iff_order
thf(fact_1146_order_Ostrict__iff__order,axiom,
    ( ord_less_nat
    = ( ^ [A4: nat,B3: nat] :
          ( ( ord_less_eq_nat @ A4 @ B3 )
          & ( A4 != B3 ) ) ) ) ).

% order.strict_iff_order
thf(fact_1147_order_Ostrict__trans1,axiom,
    ! [A: set_a,B4: set_a,C2: set_a] :
      ( ( ord_less_eq_set_a @ A @ B4 )
     => ( ( ord_less_set_a @ B4 @ C2 )
       => ( ord_less_set_a @ A @ C2 ) ) ) ).

% order.strict_trans1
thf(fact_1148_order_Ostrict__trans1,axiom,
    ! [A: nat,B4: nat,C2: nat] :
      ( ( ord_less_eq_nat @ A @ B4 )
     => ( ( ord_less_nat @ B4 @ C2 )
       => ( ord_less_nat @ A @ C2 ) ) ) ).

% order.strict_trans1
thf(fact_1149_order_Ostrict__trans2,axiom,
    ! [A: set_a,B4: set_a,C2: set_a] :
      ( ( ord_less_set_a @ A @ B4 )
     => ( ( ord_less_eq_set_a @ B4 @ C2 )
       => ( ord_less_set_a @ A @ C2 ) ) ) ).

% order.strict_trans2
thf(fact_1150_order_Ostrict__trans2,axiom,
    ! [A: nat,B4: nat,C2: nat] :
      ( ( ord_less_nat @ A @ B4 )
     => ( ( ord_less_eq_nat @ B4 @ C2 )
       => ( ord_less_nat @ A @ C2 ) ) ) ).

% order.strict_trans2
thf(fact_1151_order_Ostrict__iff__not,axiom,
    ( ord_less_set_a
    = ( ^ [A4: set_a,B3: set_a] :
          ( ( ord_less_eq_set_a @ A4 @ B3 )
          & ~ ( ord_less_eq_set_a @ B3 @ A4 ) ) ) ) ).

% order.strict_iff_not
thf(fact_1152_order_Ostrict__iff__not,axiom,
    ( ord_less_nat
    = ( ^ [A4: nat,B3: nat] :
          ( ( ord_less_eq_nat @ A4 @ B3 )
          & ~ ( ord_less_eq_nat @ B3 @ A4 ) ) ) ) ).

% order.strict_iff_not
thf(fact_1153_dual__order_Oorder__iff__strict,axiom,
    ( ord_less_eq_set_a
    = ( ^ [B3: set_a,A4: set_a] :
          ( ( ord_less_set_a @ B3 @ A4 )
          | ( A4 = B3 ) ) ) ) ).

% dual_order.order_iff_strict
thf(fact_1154_dual__order_Oorder__iff__strict,axiom,
    ( ord_less_eq_nat
    = ( ^ [B3: nat,A4: nat] :
          ( ( ord_less_nat @ B3 @ A4 )
          | ( A4 = B3 ) ) ) ) ).

% dual_order.order_iff_strict
thf(fact_1155_dual__order_Ostrict__iff__order,axiom,
    ( ord_less_set_a
    = ( ^ [B3: set_a,A4: set_a] :
          ( ( ord_less_eq_set_a @ B3 @ A4 )
          & ( A4 != B3 ) ) ) ) ).

% dual_order.strict_iff_order
thf(fact_1156_dual__order_Ostrict__iff__order,axiom,
    ( ord_less_nat
    = ( ^ [B3: nat,A4: nat] :
          ( ( ord_less_eq_nat @ B3 @ A4 )
          & ( A4 != B3 ) ) ) ) ).

% dual_order.strict_iff_order
thf(fact_1157_dual__order_Ostrict__trans1,axiom,
    ! [B4: set_a,A: set_a,C2: set_a] :
      ( ( ord_less_eq_set_a @ B4 @ A )
     => ( ( ord_less_set_a @ C2 @ B4 )
       => ( ord_less_set_a @ C2 @ A ) ) ) ).

% dual_order.strict_trans1
thf(fact_1158_dual__order_Ostrict__trans1,axiom,
    ! [B4: nat,A: nat,C2: nat] :
      ( ( ord_less_eq_nat @ B4 @ A )
     => ( ( ord_less_nat @ C2 @ B4 )
       => ( ord_less_nat @ C2 @ A ) ) ) ).

% dual_order.strict_trans1
thf(fact_1159_dual__order_Ostrict__trans2,axiom,
    ! [B4: set_a,A: set_a,C2: set_a] :
      ( ( ord_less_set_a @ B4 @ A )
     => ( ( ord_less_eq_set_a @ C2 @ B4 )
       => ( ord_less_set_a @ C2 @ A ) ) ) ).

% dual_order.strict_trans2
thf(fact_1160_dual__order_Ostrict__trans2,axiom,
    ! [B4: nat,A: nat,C2: nat] :
      ( ( ord_less_nat @ B4 @ A )
     => ( ( ord_less_eq_nat @ C2 @ B4 )
       => ( ord_less_nat @ C2 @ A ) ) ) ).

% dual_order.strict_trans2
thf(fact_1161_dual__order_Ostrict__iff__not,axiom,
    ( ord_less_set_a
    = ( ^ [B3: set_a,A4: set_a] :
          ( ( ord_less_eq_set_a @ B3 @ A4 )
          & ~ ( ord_less_eq_set_a @ A4 @ B3 ) ) ) ) ).

% dual_order.strict_iff_not
thf(fact_1162_dual__order_Ostrict__iff__not,axiom,
    ( ord_less_nat
    = ( ^ [B3: nat,A4: nat] :
          ( ( ord_less_eq_nat @ B3 @ A4 )
          & ~ ( ord_less_eq_nat @ A4 @ B3 ) ) ) ) ).

% dual_order.strict_iff_not
thf(fact_1163_order_Ostrict__implies__order,axiom,
    ! [A: set_a,B4: set_a] :
      ( ( ord_less_set_a @ A @ B4 )
     => ( ord_less_eq_set_a @ A @ B4 ) ) ).

% order.strict_implies_order
thf(fact_1164_order_Ostrict__implies__order,axiom,
    ! [A: nat,B4: nat] :
      ( ( ord_less_nat @ A @ B4 )
     => ( ord_less_eq_nat @ A @ B4 ) ) ).

% order.strict_implies_order
thf(fact_1165_dual__order_Ostrict__implies__order,axiom,
    ! [B4: set_a,A: set_a] :
      ( ( ord_less_set_a @ B4 @ A )
     => ( ord_less_eq_set_a @ B4 @ A ) ) ).

% dual_order.strict_implies_order
thf(fact_1166_dual__order_Ostrict__implies__order,axiom,
    ! [B4: nat,A: nat] :
      ( ( ord_less_nat @ B4 @ A )
     => ( ord_less_eq_nat @ B4 @ A ) ) ).

% dual_order.strict_implies_order
thf(fact_1167_order__le__less,axiom,
    ( ord_less_eq_set_a
    = ( ^ [X2: set_a,Y3: set_a] :
          ( ( ord_less_set_a @ X2 @ Y3 )
          | ( X2 = Y3 ) ) ) ) ).

% order_le_less
thf(fact_1168_order__le__less,axiom,
    ( ord_less_eq_nat
    = ( ^ [X2: nat,Y3: nat] :
          ( ( ord_less_nat @ X2 @ Y3 )
          | ( X2 = Y3 ) ) ) ) ).

% order_le_less
thf(fact_1169_order__less__le,axiom,
    ( ord_less_set_a
    = ( ^ [X2: set_a,Y3: set_a] :
          ( ( ord_less_eq_set_a @ X2 @ Y3 )
          & ( X2 != Y3 ) ) ) ) ).

% order_less_le
thf(fact_1170_order__less__le,axiom,
    ( ord_less_nat
    = ( ^ [X2: nat,Y3: nat] :
          ( ( ord_less_eq_nat @ X2 @ Y3 )
          & ( X2 != Y3 ) ) ) ) ).

% order_less_le
thf(fact_1171_linorder__not__le,axiom,
    ! [X: nat,Y: nat] :
      ( ( ~ ( ord_less_eq_nat @ X @ Y ) )
      = ( ord_less_nat @ Y @ X ) ) ).

% linorder_not_le
thf(fact_1172_linorder__not__less,axiom,
    ! [X: nat,Y: nat] :
      ( ( ~ ( ord_less_nat @ X @ Y ) )
      = ( ord_less_eq_nat @ Y @ X ) ) ).

% linorder_not_less
thf(fact_1173_order__less__imp__le,axiom,
    ! [X: set_a,Y: set_a] :
      ( ( ord_less_set_a @ X @ Y )
     => ( ord_less_eq_set_a @ X @ Y ) ) ).

% order_less_imp_le
thf(fact_1174_order__less__imp__le,axiom,
    ! [X: nat,Y: nat] :
      ( ( ord_less_nat @ X @ Y )
     => ( ord_less_eq_nat @ X @ Y ) ) ).

% order_less_imp_le
thf(fact_1175_order__le__neq__trans,axiom,
    ! [A: set_a,B4: set_a] :
      ( ( ord_less_eq_set_a @ A @ B4 )
     => ( ( A != B4 )
       => ( ord_less_set_a @ A @ B4 ) ) ) ).

% order_le_neq_trans
thf(fact_1176_order__le__neq__trans,axiom,
    ! [A: nat,B4: nat] :
      ( ( ord_less_eq_nat @ A @ B4 )
     => ( ( A != B4 )
       => ( ord_less_nat @ A @ B4 ) ) ) ).

% order_le_neq_trans
thf(fact_1177_order__neq__le__trans,axiom,
    ! [A: set_a,B4: set_a] :
      ( ( A != B4 )
     => ( ( ord_less_eq_set_a @ A @ B4 )
       => ( ord_less_set_a @ A @ B4 ) ) ) ).

% order_neq_le_trans
thf(fact_1178_order__neq__le__trans,axiom,
    ! [A: nat,B4: nat] :
      ( ( A != B4 )
     => ( ( ord_less_eq_nat @ A @ B4 )
       => ( ord_less_nat @ A @ B4 ) ) ) ).

% order_neq_le_trans
thf(fact_1179_order__le__less__trans,axiom,
    ! [X: set_a,Y: set_a,Z: set_a] :
      ( ( ord_less_eq_set_a @ X @ Y )
     => ( ( ord_less_set_a @ Y @ Z )
       => ( ord_less_set_a @ X @ Z ) ) ) ).

% order_le_less_trans
thf(fact_1180_order__le__less__trans,axiom,
    ! [X: nat,Y: nat,Z: nat] :
      ( ( ord_less_eq_nat @ X @ Y )
     => ( ( ord_less_nat @ Y @ Z )
       => ( ord_less_nat @ X @ Z ) ) ) ).

% order_le_less_trans
thf(fact_1181_sumset__iterated__Suc,axiom,
    ! [A2: set_a,K: nat] :
      ( ( pluenn1960970773371692859ated_a @ g @ addition @ zero @ A2 @ ( suc @ K ) )
      = ( pluenn3038260743871226533mset_a @ g @ addition @ A2 @ ( pluenn1960970773371692859ated_a @ g @ addition @ zero @ A2 @ K ) ) ) ).

% sumset_iterated_Suc
thf(fact_1182_old_Onat_Oinject,axiom,
    ! [Nat: nat,Nat2: nat] :
      ( ( ( suc @ Nat )
        = ( suc @ Nat2 ) )
      = ( Nat = Nat2 ) ) ).

% old.nat.inject
thf(fact_1183_nat_Oinject,axiom,
    ! [X22: nat,Y22: nat] :
      ( ( ( suc @ X22 )
        = ( suc @ Y22 ) )
      = ( X22 = Y22 ) ) ).

% nat.inject
thf(fact_1184_lessI,axiom,
    ! [N2: nat] : ( ord_less_nat @ N2 @ ( suc @ N2 ) ) ).

% lessI
thf(fact_1185_Suc__mono,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_nat @ M2 @ N2 )
     => ( ord_less_nat @ ( suc @ M2 ) @ ( suc @ N2 ) ) ) ).

% Suc_mono
thf(fact_1186_Suc__less__eq,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_nat @ ( suc @ M2 ) @ ( suc @ N2 ) )
      = ( ord_less_nat @ M2 @ N2 ) ) ).

% Suc_less_eq
thf(fact_1187_Suc__le__mono,axiom,
    ! [N2: nat,M2: nat] :
      ( ( ord_less_eq_nat @ ( suc @ N2 ) @ ( suc @ M2 ) )
      = ( ord_less_eq_nat @ N2 @ M2 ) ) ).

% Suc_le_mono
thf(fact_1188_Suc__diff__diff,axiom,
    ! [M2: nat,N2: nat,K: nat] :
      ( ( minus_minus_nat @ ( minus_minus_nat @ ( suc @ M2 ) @ N2 ) @ ( suc @ K ) )
      = ( minus_minus_nat @ ( minus_minus_nat @ M2 @ N2 ) @ K ) ) ).

% Suc_diff_diff
thf(fact_1189_diff__Suc__Suc,axiom,
    ! [M2: nat,N2: nat] :
      ( ( minus_minus_nat @ ( suc @ M2 ) @ ( suc @ N2 ) )
      = ( minus_minus_nat @ M2 @ N2 ) ) ).

% diff_Suc_Suc
thf(fact_1190_zero__less__Suc,axiom,
    ! [N2: nat] : ( ord_less_nat @ zero_zero_nat @ ( suc @ N2 ) ) ).

% zero_less_Suc
thf(fact_1191_less__Suc0,axiom,
    ! [N2: nat] :
      ( ( ord_less_nat @ N2 @ ( suc @ zero_zero_nat ) )
      = ( N2 = zero_zero_nat ) ) ).

% less_Suc0
thf(fact_1192_diff__Suc__1,axiom,
    ! [N2: nat] :
      ( ( minus_minus_nat @ ( suc @ N2 ) @ one_one_nat )
      = N2 ) ).

% diff_Suc_1
thf(fact_1193_Suc__pred,axiom,
    ! [N2: nat] :
      ( ( ord_less_nat @ zero_zero_nat @ N2 )
     => ( ( suc @ ( minus_minus_nat @ N2 @ ( suc @ zero_zero_nat ) ) )
        = N2 ) ) ).

% Suc_pred
thf(fact_1194_Suc__diff__1,axiom,
    ! [N2: nat] :
      ( ( ord_less_nat @ zero_zero_nat @ N2 )
     => ( ( suc @ ( minus_minus_nat @ N2 @ one_one_nat ) )
        = N2 ) ) ).

% Suc_diff_1
thf(fact_1195_diff__Suc__eq__diff__pred,axiom,
    ! [M2: nat,N2: nat] :
      ( ( minus_minus_nat @ M2 @ ( suc @ N2 ) )
      = ( minus_minus_nat @ ( minus_minus_nat @ M2 @ one_one_nat ) @ N2 ) ) ).

% diff_Suc_eq_diff_pred
thf(fact_1196_not__less__less__Suc__eq,axiom,
    ! [N2: nat,M2: nat] :
      ( ~ ( ord_less_nat @ N2 @ M2 )
     => ( ( ord_less_nat @ N2 @ ( suc @ M2 ) )
        = ( N2 = M2 ) ) ) ).

% not_less_less_Suc_eq
thf(fact_1197_zero__induct__lemma,axiom,
    ! [P: nat > $o,K: nat,I: nat] :
      ( ( P @ K )
     => ( ! [N3: nat] :
            ( ( P @ ( suc @ N3 ) )
           => ( P @ N3 ) )
       => ( P @ ( minus_minus_nat @ K @ I ) ) ) ) ).

% zero_induct_lemma
thf(fact_1198_strict__inc__induct,axiom,
    ! [I: nat,J: nat,P: nat > $o] :
      ( ( ord_less_nat @ I @ J )
     => ( ! [I2: nat] :
            ( ( J
              = ( suc @ I2 ) )
           => ( P @ I2 ) )
       => ( ! [I2: nat] :
              ( ( ord_less_nat @ I2 @ J )
             => ( ( P @ ( suc @ I2 ) )
               => ( P @ I2 ) ) )
         => ( P @ I ) ) ) ) ).

% strict_inc_induct
thf(fact_1199_less__Suc__induct,axiom,
    ! [I: nat,J: nat,P: nat > nat > $o] :
      ( ( ord_less_nat @ I @ J )
     => ( ! [I2: nat] : ( P @ I2 @ ( suc @ I2 ) )
       => ( ! [I2: nat,J2: nat,K3: nat] :
              ( ( ord_less_nat @ I2 @ J2 )
             => ( ( ord_less_nat @ J2 @ K3 )
               => ( ( P @ I2 @ J2 )
                 => ( ( P @ J2 @ K3 )
                   => ( P @ I2 @ K3 ) ) ) ) )
         => ( P @ I @ J ) ) ) ) ).

% less_Suc_induct
thf(fact_1200_less__trans__Suc,axiom,
    ! [I: nat,J: nat,K: nat] :
      ( ( ord_less_nat @ I @ J )
     => ( ( ord_less_nat @ J @ K )
       => ( ord_less_nat @ ( suc @ I ) @ K ) ) ) ).

% less_trans_Suc
thf(fact_1201_Suc__less__SucD,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_nat @ ( suc @ M2 ) @ ( suc @ N2 ) )
     => ( ord_less_nat @ M2 @ N2 ) ) ).

% Suc_less_SucD
thf(fact_1202_less__antisym,axiom,
    ! [N2: nat,M2: nat] :
      ( ~ ( ord_less_nat @ N2 @ M2 )
     => ( ( ord_less_nat @ N2 @ ( suc @ M2 ) )
       => ( M2 = N2 ) ) ) ).

% less_antisym
thf(fact_1203_Suc__less__eq2,axiom,
    ! [N2: nat,M2: nat] :
      ( ( ord_less_nat @ ( suc @ N2 ) @ M2 )
      = ( ? [M7: nat] :
            ( ( M2
              = ( suc @ M7 ) )
            & ( ord_less_nat @ N2 @ M7 ) ) ) ) ).

% Suc_less_eq2
thf(fact_1204_All__less__Suc,axiom,
    ! [N2: nat,P: nat > $o] :
      ( ( ! [I4: nat] :
            ( ( ord_less_nat @ I4 @ ( suc @ N2 ) )
           => ( P @ I4 ) ) )
      = ( ( P @ N2 )
        & ! [I4: nat] :
            ( ( ord_less_nat @ I4 @ N2 )
           => ( P @ I4 ) ) ) ) ).

% All_less_Suc
thf(fact_1205_not__less__eq,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ~ ( ord_less_nat @ M2 @ N2 ) )
      = ( ord_less_nat @ N2 @ ( suc @ M2 ) ) ) ).

% not_less_eq
thf(fact_1206_less__Suc__eq,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_nat @ M2 @ ( suc @ N2 ) )
      = ( ( ord_less_nat @ M2 @ N2 )
        | ( M2 = N2 ) ) ) ).

% less_Suc_eq
thf(fact_1207_Ex__less__Suc,axiom,
    ! [N2: nat,P: nat > $o] :
      ( ( ? [I4: nat] :
            ( ( ord_less_nat @ I4 @ ( suc @ N2 ) )
            & ( P @ I4 ) ) )
      = ( ( P @ N2 )
        | ? [I4: nat] :
            ( ( ord_less_nat @ I4 @ N2 )
            & ( P @ I4 ) ) ) ) ).

% Ex_less_Suc
thf(fact_1208_less__SucI,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_nat @ M2 @ N2 )
     => ( ord_less_nat @ M2 @ ( suc @ N2 ) ) ) ).

% less_SucI
thf(fact_1209_less__SucE,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_nat @ M2 @ ( suc @ N2 ) )
     => ( ~ ( ord_less_nat @ M2 @ N2 )
       => ( M2 = N2 ) ) ) ).

% less_SucE
thf(fact_1210_Suc__lessI,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_nat @ M2 @ N2 )
     => ( ( ( suc @ M2 )
         != N2 )
       => ( ord_less_nat @ ( suc @ M2 ) @ N2 ) ) ) ).

% Suc_lessI
thf(fact_1211_Suc__lessE,axiom,
    ! [I: nat,K: nat] :
      ( ( ord_less_nat @ ( suc @ I ) @ K )
     => ~ ! [J2: nat] :
            ( ( ord_less_nat @ I @ J2 )
           => ( K
             != ( suc @ J2 ) ) ) ) ).

% Suc_lessE
thf(fact_1212_Suc__lessD,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_nat @ ( suc @ M2 ) @ N2 )
     => ( ord_less_nat @ M2 @ N2 ) ) ).

% Suc_lessD
thf(fact_1213_Nat_OlessE,axiom,
    ! [I: nat,K: nat] :
      ( ( ord_less_nat @ I @ K )
     => ( ( K
         != ( suc @ I ) )
       => ~ ! [J2: nat] :
              ( ( ord_less_nat @ I @ J2 )
             => ( K
               != ( suc @ J2 ) ) ) ) ) ).

% Nat.lessE
thf(fact_1214_Suc__leD,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_eq_nat @ ( suc @ M2 ) @ N2 )
     => ( ord_less_eq_nat @ M2 @ N2 ) ) ).

% Suc_leD
thf(fact_1215_le__SucE,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_eq_nat @ M2 @ ( suc @ N2 ) )
     => ( ~ ( ord_less_eq_nat @ M2 @ N2 )
       => ( M2
          = ( suc @ N2 ) ) ) ) ).

% le_SucE
thf(fact_1216_le__SucI,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_eq_nat @ M2 @ N2 )
     => ( ord_less_eq_nat @ M2 @ ( suc @ N2 ) ) ) ).

% le_SucI
thf(fact_1217_Suc__le__D,axiom,
    ! [N2: nat,M8: nat] :
      ( ( ord_less_eq_nat @ ( suc @ N2 ) @ M8 )
     => ? [M6: nat] :
          ( M8
          = ( suc @ M6 ) ) ) ).

% Suc_le_D
thf(fact_1218_le__Suc__eq,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_eq_nat @ M2 @ ( suc @ N2 ) )
      = ( ( ord_less_eq_nat @ M2 @ N2 )
        | ( M2
          = ( suc @ N2 ) ) ) ) ).

% le_Suc_eq
thf(fact_1219_Suc__n__not__le__n,axiom,
    ! [N2: nat] :
      ~ ( ord_less_eq_nat @ ( suc @ N2 ) @ N2 ) ).

% Suc_n_not_le_n
thf(fact_1220_not__less__eq__eq,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ~ ( ord_less_eq_nat @ M2 @ N2 ) )
      = ( ord_less_eq_nat @ ( suc @ N2 ) @ M2 ) ) ).

% not_less_eq_eq
thf(fact_1221_full__nat__induct,axiom,
    ! [P: nat > $o,N2: nat] :
      ( ! [N3: nat] :
          ( ! [M3: nat] :
              ( ( ord_less_eq_nat @ ( suc @ M3 ) @ N3 )
             => ( P @ M3 ) )
         => ( P @ N3 ) )
     => ( P @ N2 ) ) ).

% full_nat_induct
thf(fact_1222_nat__induct__at__least,axiom,
    ! [M2: nat,N2: nat,P: nat > $o] :
      ( ( ord_less_eq_nat @ M2 @ N2 )
     => ( ( P @ M2 )
       => ( ! [N3: nat] :
              ( ( ord_less_eq_nat @ M2 @ N3 )
             => ( ( P @ N3 )
               => ( P @ ( suc @ N3 ) ) ) )
         => ( P @ N2 ) ) ) ) ).

% nat_induct_at_least
thf(fact_1223_transitive__stepwise__le,axiom,
    ! [M2: nat,N2: nat,R2: nat > nat > $o] :
      ( ( ord_less_eq_nat @ M2 @ N2 )
     => ( ! [X3: nat] : ( R2 @ X3 @ X3 )
       => ( ! [X3: nat,Y2: nat,Z3: nat] :
              ( ( R2 @ X3 @ Y2 )
             => ( ( R2 @ Y2 @ Z3 )
               => ( R2 @ X3 @ Z3 ) ) )
         => ( ! [N3: nat] : ( R2 @ N3 @ ( suc @ N3 ) )
           => ( R2 @ M2 @ N2 ) ) ) ) ) ).

% transitive_stepwise_le
thf(fact_1224_nat_Odistinct_I1_J,axiom,
    ! [X22: nat] :
      ( zero_zero_nat
     != ( suc @ X22 ) ) ).

% nat.distinct(1)
thf(fact_1225_old_Onat_Odistinct_I2_J,axiom,
    ! [Nat2: nat] :
      ( ( suc @ Nat2 )
     != zero_zero_nat ) ).

% old.nat.distinct(2)
thf(fact_1226_old_Onat_Odistinct_I1_J,axiom,
    ! [Nat2: nat] :
      ( zero_zero_nat
     != ( suc @ Nat2 ) ) ).

% old.nat.distinct(1)
thf(fact_1227_nat_OdiscI,axiom,
    ! [Nat: nat,X22: nat] :
      ( ( Nat
        = ( suc @ X22 ) )
     => ( Nat != zero_zero_nat ) ) ).

% nat.discI
thf(fact_1228_old_Onat_Oexhaust,axiom,
    ! [Y: nat] :
      ( ( Y != zero_zero_nat )
     => ~ ! [Nat3: nat] :
            ( Y
           != ( suc @ Nat3 ) ) ) ).

% old.nat.exhaust
thf(fact_1229_nat__induct,axiom,
    ! [P: nat > $o,N2: nat] :
      ( ( P @ zero_zero_nat )
     => ( ! [N3: nat] :
            ( ( P @ N3 )
           => ( P @ ( suc @ N3 ) ) )
       => ( P @ N2 ) ) ) ).

% nat_induct
thf(fact_1230_diff__induct,axiom,
    ! [P: nat > nat > $o,M2: nat,N2: nat] :
      ( ! [X3: nat] : ( P @ X3 @ zero_zero_nat )
     => ( ! [Y2: nat] : ( P @ zero_zero_nat @ ( suc @ Y2 ) )
       => ( ! [X3: nat,Y2: nat] :
              ( ( P @ X3 @ Y2 )
             => ( P @ ( suc @ X3 ) @ ( suc @ Y2 ) ) )
         => ( P @ M2 @ N2 ) ) ) ) ).

% diff_induct
thf(fact_1231_zero__induct,axiom,
    ! [P: nat > $o,K: nat] :
      ( ( P @ K )
     => ( ! [N3: nat] :
            ( ( P @ ( suc @ N3 ) )
           => ( P @ N3 ) )
       => ( P @ zero_zero_nat ) ) ) ).

% zero_induct
thf(fact_1232_Suc__neq__Zero,axiom,
    ! [M2: nat] :
      ( ( suc @ M2 )
     != zero_zero_nat ) ).

% Suc_neq_Zero
thf(fact_1233_Zero__neq__Suc,axiom,
    ! [M2: nat] :
      ( zero_zero_nat
     != ( suc @ M2 ) ) ).

% Zero_neq_Suc
thf(fact_1234_Zero__not__Suc,axiom,
    ! [M2: nat] :
      ( zero_zero_nat
     != ( suc @ M2 ) ) ).

% Zero_not_Suc
thf(fact_1235_not0__implies__Suc,axiom,
    ! [N2: nat] :
      ( ( N2 != zero_zero_nat )
     => ? [M6: nat] :
          ( N2
          = ( suc @ M6 ) ) ) ).

% not0_implies_Suc
thf(fact_1236_n__not__Suc__n,axiom,
    ! [N2: nat] :
      ( N2
     != ( suc @ N2 ) ) ).

% n_not_Suc_n
thf(fact_1237_Suc__inject,axiom,
    ! [X: nat,Y: nat] :
      ( ( ( suc @ X )
        = ( suc @ Y ) )
     => ( X = Y ) ) ).

% Suc_inject
thf(fact_1238_One__nat__def,axiom,
    ( one_one_nat
    = ( suc @ zero_zero_nat ) ) ).

% One_nat_def
thf(fact_1239_Suc__diff__le,axiom,
    ! [N2: nat,M2: nat] :
      ( ( ord_less_eq_nat @ N2 @ M2 )
     => ( ( minus_minus_nat @ ( suc @ M2 ) @ N2 )
        = ( suc @ ( minus_minus_nat @ M2 @ N2 ) ) ) ) ).

% Suc_diff_le
thf(fact_1240_diff__less__Suc,axiom,
    ! [M2: nat,N2: nat] : ( ord_less_nat @ ( minus_minus_nat @ M2 @ N2 ) @ ( suc @ M2 ) ) ).

% diff_less_Suc
thf(fact_1241_Suc__diff__Suc,axiom,
    ! [N2: nat,M2: nat] :
      ( ( ord_less_nat @ N2 @ M2 )
     => ( ( suc @ ( minus_minus_nat @ M2 @ ( suc @ N2 ) ) )
        = ( minus_minus_nat @ M2 @ N2 ) ) ) ).

% Suc_diff_Suc
thf(fact_1242_Suc__leI,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_nat @ M2 @ N2 )
     => ( ord_less_eq_nat @ ( suc @ M2 ) @ N2 ) ) ).

% Suc_leI
thf(fact_1243_Suc__le__eq,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_eq_nat @ ( suc @ M2 ) @ N2 )
      = ( ord_less_nat @ M2 @ N2 ) ) ).

% Suc_le_eq
thf(fact_1244_dec__induct,axiom,
    ! [I: nat,J: nat,P: nat > $o] :
      ( ( ord_less_eq_nat @ I @ J )
     => ( ( P @ I )
       => ( ! [N3: nat] :
              ( ( ord_less_eq_nat @ I @ N3 )
             => ( ( ord_less_nat @ N3 @ J )
               => ( ( P @ N3 )
                 => ( P @ ( suc @ N3 ) ) ) ) )
         => ( P @ J ) ) ) ) ).

% dec_induct
thf(fact_1245_inc__induct,axiom,
    ! [I: nat,J: nat,P: nat > $o] :
      ( ( ord_less_eq_nat @ I @ J )
     => ( ( P @ J )
       => ( ! [N3: nat] :
              ( ( ord_less_eq_nat @ I @ N3 )
             => ( ( ord_less_nat @ N3 @ J )
               => ( ( P @ ( suc @ N3 ) )
                 => ( P @ N3 ) ) ) )
         => ( P @ I ) ) ) ) ).

% inc_induct
thf(fact_1246_Suc__le__lessD,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_eq_nat @ ( suc @ M2 ) @ N2 )
     => ( ord_less_nat @ M2 @ N2 ) ) ).

% Suc_le_lessD
thf(fact_1247_le__less__Suc__eq,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_eq_nat @ M2 @ N2 )
     => ( ( ord_less_nat @ N2 @ ( suc @ M2 ) )
        = ( N2 = M2 ) ) ) ).

% le_less_Suc_eq
thf(fact_1248_less__Suc__eq__le,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_nat @ M2 @ ( suc @ N2 ) )
      = ( ord_less_eq_nat @ M2 @ N2 ) ) ).

% less_Suc_eq_le
thf(fact_1249_less__eq__Suc__le,axiom,
    ( ord_less_nat
    = ( ^ [N4: nat] : ( ord_less_eq_nat @ ( suc @ N4 ) ) ) ) ).

% less_eq_Suc_le
thf(fact_1250_le__imp__less__Suc,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_eq_nat @ M2 @ N2 )
     => ( ord_less_nat @ M2 @ ( suc @ N2 ) ) ) ).

% le_imp_less_Suc
thf(fact_1251_Ex__less__Suc2,axiom,
    ! [N2: nat,P: nat > $o] :
      ( ( ? [I4: nat] :
            ( ( ord_less_nat @ I4 @ ( suc @ N2 ) )
            & ( P @ I4 ) ) )
      = ( ( P @ zero_zero_nat )
        | ? [I4: nat] :
            ( ( ord_less_nat @ I4 @ N2 )
            & ( P @ ( suc @ I4 ) ) ) ) ) ).

% Ex_less_Suc2
thf(fact_1252_gr0__conv__Suc,axiom,
    ! [N2: nat] :
      ( ( ord_less_nat @ zero_zero_nat @ N2 )
      = ( ? [M4: nat] :
            ( N2
            = ( suc @ M4 ) ) ) ) ).

% gr0_conv_Suc
thf(fact_1253_All__less__Suc2,axiom,
    ! [N2: nat,P: nat > $o] :
      ( ( ! [I4: nat] :
            ( ( ord_less_nat @ I4 @ ( suc @ N2 ) )
           => ( P @ I4 ) ) )
      = ( ( P @ zero_zero_nat )
        & ! [I4: nat] :
            ( ( ord_less_nat @ I4 @ N2 )
           => ( P @ ( suc @ I4 ) ) ) ) ) ).

% All_less_Suc2
thf(fact_1254_gr0__implies__Suc,axiom,
    ! [N2: nat] :
      ( ( ord_less_nat @ zero_zero_nat @ N2 )
     => ? [M6: nat] :
          ( N2
          = ( suc @ M6 ) ) ) ).

% gr0_implies_Suc
thf(fact_1255_less__Suc__eq__0__disj,axiom,
    ! [M2: nat,N2: nat] :
      ( ( ord_less_nat @ M2 @ ( suc @ N2 ) )
      = ( ( M2 = zero_zero_nat )
        | ? [J3: nat] :
            ( ( M2
              = ( suc @ J3 ) )
            & ( ord_less_nat @ J3 @ N2 ) ) ) ) ).

% less_Suc_eq_0_disj
thf(fact_1256_zero__notin__Suc__image,axiom,
    ! [A2: set_nat] :
      ~ ( member_nat @ zero_zero_nat @ ( image_nat_nat @ suc @ A2 ) ) ).

% zero_notin_Suc_image
thf(fact_1257_ex__least__nat__less,axiom,
    ! [P: nat > $o,N2: nat] :
      ( ( P @ N2 )
     => ( ~ ( P @ zero_zero_nat )
       => ? [K3: nat] :
            ( ( ord_less_nat @ K3 @ N2 )
            & ! [I3: nat] :
                ( ( ord_less_eq_nat @ I3 @ K3 )
               => ~ ( P @ I3 ) )
            & ( P @ ( suc @ K3 ) ) ) ) ) ).

% ex_least_nat_less
thf(fact_1258_diff__Suc__less,axiom,
    ! [N2: nat,I: nat] :
      ( ( ord_less_nat @ zero_zero_nat @ N2 )
     => ( ord_less_nat @ ( minus_minus_nat @ N2 @ ( suc @ I ) ) @ N2 ) ) ).

% diff_Suc_less
thf(fact_1259_nat__induct__non__zero,axiom,
    ! [N2: nat,P: nat > $o] :
      ( ( ord_less_nat @ zero_zero_nat @ N2 )
     => ( ( P @ one_one_nat )
       => ( ! [N3: nat] :
              ( ( ord_less_nat @ zero_zero_nat @ N3 )
             => ( ( P @ N3 )
               => ( P @ ( suc @ N3 ) ) ) )
         => ( P @ N2 ) ) ) ) ).

% nat_induct_non_zero
thf(fact_1260_Suc__diff__eq__diff__pred,axiom,
    ! [N2: nat,M2: nat] :
      ( ( ord_less_nat @ zero_zero_nat @ N2 )
     => ( ( minus_minus_nat @ ( suc @ M2 ) @ N2 )
        = ( minus_minus_nat @ M2 @ ( minus_minus_nat @ N2 @ one_one_nat ) ) ) ) ).

% Suc_diff_eq_diff_pred
thf(fact_1261_Suc__pred_H,axiom,
    ! [N2: nat] :
      ( ( ord_less_nat @ zero_zero_nat @ N2 )
     => ( N2
        = ( suc @ ( minus_minus_nat @ N2 @ one_one_nat ) ) ) ) ).

% Suc_pred'
thf(fact_1262_inverse__undefined,axiom,
    ! [U: a] :
      ( ~ ( member_a @ U @ g )
     => ( ( group_inverse_a @ g @ addition @ zero @ U )
        = undefined_a ) ) ).

% inverse_undefined
thf(fact_1263_nat__descend__induct,axiom,
    ! [N2: nat,P: nat > $o,M2: nat] :
      ( ! [K3: nat] :
          ( ( ord_less_nat @ N2 @ K3 )
         => ( P @ K3 ) )
     => ( ! [K3: nat] :
            ( ( ord_less_eq_nat @ K3 @ N2 )
           => ( ! [I3: nat] :
                  ( ( ord_less_nat @ K3 @ I3 )
                 => ( P @ I3 ) )
             => ( P @ K3 ) ) )
       => ( P @ M2 ) ) ) ).

% nat_descend_induct
thf(fact_1264_exists__least__lemma,axiom,
    ! [P: nat > $o] :
      ( ~ ( P @ zero_zero_nat )
     => ( ? [X_12: nat] : ( P @ X_12 )
       => ? [N3: nat] :
            ( ~ ( P @ N3 )
            & ( P @ ( suc @ N3 ) ) ) ) ) ).

% exists_least_lemma

% Conjectures (2)
thf(conj_0,hypothesis,
    ! [V4: a > a,W2: a > a] :
      ( ! [X3: a] :
          ( ( member_a @ X3 @ ( pluenn3038260743871226533mset_a @ g @ addition @ v @ ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ w ) ) )
         => ( member_a @ ( V4 @ X3 ) @ v ) )
     => ( ! [X3: a] :
            ( ( member_a @ X3 @ ( pluenn3038260743871226533mset_a @ g @ addition @ v @ ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ w ) ) )
           => ( member_a @ ( W2 @ X3 ) @ w ) )
       => ( ! [X3: a] :
              ( ( member_a @ X3 @ ( pluenn3038260743871226533mset_a @ g @ addition @ v @ ( pluenn2534204936789923946sset_a @ g @ addition @ zero @ w ) ) )
             => ( ( addition @ ( V4 @ X3 ) @ ( group_inverse_a @ g @ addition @ zero @ ( W2 @ X3 ) ) )
                = X3 ) )
         => thesis ) ) ) ).

thf(conj_1,conjecture,
    thesis ).

%------------------------------------------------------------------------------