% Mizar problem: t19_int_2,int_2,321,43 
fof(t19_int_2,conjecture,(
    ! [A] : 
      ( v1_int_1(A)
     => ! [B] : 
          ( v1_int_1(B)
         => ! [C] : 
              ( v1_int_1(C)
             => ( r1_int_1(A,B,C)
              <=> r2_int_1(C,k6_xcmplx_0(A,B)) ) ) ) ) ),
    inference(mizar_bg_added,[status(thm)],[cc4_int_1,commutativity_k3_xcmplx_0,d3_int_1,d9_int_1,dt_k3_xcmplx_0,dt_k6_xcmplx_0,fc2_int_1,fc4_int_1,rc2_int_1,reflexivity_r2_int_1]),
    [file(int_2,t19_int_2)]).

fof(cc4_int_1,axiom,(
    ! [A] : 
      ( v1_int_1(A)
     => ( v1_xcmplx_0(A)
        & v1_xreal_0(A) ) ) ),
    file(int_1,cc4_int_1),
    []).

fof(commutativity_k3_xcmplx_0,axiom,(
    ! [A,B] : 
      ( ( v1_xcmplx_0(A)
        & v1_xcmplx_0(B) )
     => k3_xcmplx_0(A,B) = k3_xcmplx_0(B,A) ) ),
    file(xcmplx_0,k3_xcmplx_0),
    []).

fof(d3_int_1,axiom,(
    ! [A] : 
      ( v1_int_1(A)
     => ! [B] : 
          ( v1_int_1(B)
         => ! [C] : 
              ( v1_int_1(C)
             => ( r1_int_1(A,B,C)
              <=> ? [D] : 
                    ( v1_int_1(D)
                    & k3_xcmplx_0(C,D) = k6_xcmplx_0(A,B) ) ) ) ) ) ),
    file(int_1,d3_int_1),
    []).

fof(d9_int_1,axiom,(
    ! [A] : 
      ( v1_int_1(A)
     => ! [B] : 
          ( v1_int_1(B)
         => ( r2_int_1(A,B)
          <=> ? [C] : 
                ( v1_int_1(C)
                & B = k3_xcmplx_0(A,C) ) ) ) ) ),
    file(int_1,d9_int_1),
    []).

fof(dt_k3_xcmplx_0,axiom,(
    $true ),
    file(xcmplx_0,k3_xcmplx_0),
    []).

fof(dt_k6_xcmplx_0,axiom,(
    $true ),
    file(xcmplx_0,k6_xcmplx_0),
    []).

fof(fc2_int_1,axiom,(
    ! [A,B] : 
      ( ( v1_int_1(A)
        & v1_int_1(B) )
     => ( v1_xcmplx_0(k3_xcmplx_0(A,B))
        & v1_xreal_0(k3_xcmplx_0(A,B))
        & v1_int_1(k3_xcmplx_0(A,B)) ) ) ),
    file(int_1,fc2_int_1),
    []).

fof(fc4_int_1,axiom,(
    ! [A,B] : 
      ( ( v1_int_1(A)
        & v1_int_1(B) )
     => ( v1_xcmplx_0(k6_xcmplx_0(A,B))
        & v1_xreal_0(k6_xcmplx_0(A,B))
        & v1_int_1(k6_xcmplx_0(A,B)) ) ) ),
    file(int_1,fc4_int_1),
    []).

fof(rc2_int_1,axiom,(
    ? [A] : v1_int_1(A) ),
    file(int_1,rc2_int_1),
    []).

fof(reflexivity_r2_int_1,axiom,(
    ! [A,B] : 
      ( ( v1_int_1(A)
        & v1_int_1(B) )
     => r2_int_1(A,A) ) ),
    file(int_1,r2_int_1),
    []).