% Mizar problem: t21_mcart_5,mcart_5,1225,70 
fof(t21_mcart_5,conjecture,(
    ! [A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P] : 
      ( k2_mcart_5(A,B,C,D,E,F,G,H) = k2_mcart_5(I,J,K,L,M,N,O,P)
     => ( k2_mcart_5(A,B,C,D,E,F,G,H) = k1_xboole_0
        | ( A = I
          & B = J
          & C = K
          & D = L
          & E = M
          & F = N
          & G = O
          & H = P ) ) ) ),
    inference(mizar_bg_added,[status(thm)],[antisymmetry_r2_hidden,d2_mcart_5,dt_k1_xboole_0,dt_k2_mcart_4,dt_k2_mcart_5,dt_k2_zfmisc_1,dt_m1_subset_1,existence_m1_subset_1,fc1_xboole_0,rc1_xboole_0,rc2_xboole_0,t19_mcart_5,t1_subset,t20_mcart_5,t2_subset,t6_boole,t7_boole,t8_boole]),
    [file(mcart_5,t21_mcart_5)]).

fof(antisymmetry_r2_hidden,axiom,(
    ! [A,B] : 
      ( r2_hidden(A,B)
     => ~ r2_hidden(B,A) ) ),
    file(hidden,r2_hidden),
    []).

fof(d2_mcart_5,axiom,(
    ! [A,B,C,D,E,F,G,H] : k2_mcart_5(A,B,C,D,E,F,G,H) = k2_zfmisc_1(k2_mcart_4(A,B,C,D,E,F,G),H) ),
    file(mcart_5,d2_mcart_5),
    []).

fof(dt_k1_xboole_0,axiom,(
    $true ),
    file(xboole_0,k1_xboole_0),
    []).

fof(dt_k2_mcart_4,axiom,(
    $true ),
    file(mcart_4,k2_mcart_4),
    []).

fof(dt_k2_mcart_5,axiom,(
    $true ),
    file(mcart_5,k2_mcart_5),
    []).

fof(dt_k2_zfmisc_1,axiom,(
    $true ),
    file(zfmisc_1,k2_zfmisc_1),
    []).

fof(dt_m1_subset_1,axiom,(
    $true ),
    file(subset_1,m1_subset_1),
    []).

fof(existence_m1_subset_1,axiom,(
    ! [A] : 
    ? [B] : m1_subset_1(B,A) ),
    file(subset_1,m1_subset_1),
    []).

fof(fc1_xboole_0,axiom,(
    v1_xboole_0(k1_xboole_0) ),
    file(xboole_0,fc1_xboole_0),
    []).

fof(rc1_xboole_0,axiom,(
    ? [A] : v1_xboole_0(A) ),
    file(xboole_0,rc1_xboole_0),
    []).

fof(rc2_xboole_0,axiom,(
    ? [A] : ~ v1_xboole_0(A) ),
    file(xboole_0,rc2_xboole_0),
    []).

fof(t19_mcart_5,axiom,(
    ! [A,B,C,D,E,F,G,H] : 
      ( ( A != k1_xboole_0
        & B != k1_xboole_0
        & C != k1_xboole_0
        & D != k1_xboole_0
        & E != k1_xboole_0
        & F != k1_xboole_0
        & G != k1_xboole_0
        & H != k1_xboole_0 )
    <=> k2_mcart_5(A,B,C,D,E,F,G,H) != k1_xboole_0 ) ),
    file(mcart_5,t19_mcart_5),
    []).

fof(t1_subset,axiom,(
    ! [A,B] : 
      ( r2_hidden(A,B)
     => m1_subset_1(A,B) ) ),
    file(subset,t1_subset),
    []).

fof(t20_mcart_5,axiom,(
    ! [A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P] : 
      ( k2_mcart_5(A,B,C,D,E,F,G,H) = k2_mcart_5(I,J,K,L,M,N,O,P)
     => ( A = k1_xboole_0
        | B = k1_xboole_0
        | C = k1_xboole_0
        | D = k1_xboole_0
        | E = k1_xboole_0
        | F = k1_xboole_0
        | G = k1_xboole_0
        | H = k1_xboole_0
        | ( A = I
          & B = J
          & C = K
          & D = L
          & E = M
          & F = N
          & G = O
          & H = P ) ) ) ),
    file(mcart_5,t20_mcart_5),
    []).

fof(t2_subset,axiom,(
    ! [A,B] : 
      ( m1_subset_1(A,B)
     => ( v1_xboole_0(B)
        | r2_hidden(A,B) ) ) ),
    file(subset,t2_subset),
    []).

fof(t6_boole,axiom,(
    ! [A] : 
      ( v1_xboole_0(A)
     => A = k1_xboole_0 ) ),
    file(boole,t6_boole),
    []).

fof(t7_boole,axiom,(
    ! [A,B] : ~ ( r2_hidden(A,B)
      & v1_xboole_0(B) ) ),
    file(boole,t7_boole),
    []).

fof(t8_boole,axiom,(
    ! [A,B] : ~ ( v1_xboole_0(A)
      & A != B
      & v1_xboole_0(B) ) ),
    file(boole,t8_boole),
    []).