% Mizar problem: e1_5_1_2,zfmisc_1,90,63 
include('Axioms/SET010^0.ax').
thf(c1_5_type,type,( c1_5__zfmisc_1: $i )).
thf(r1_tarski_type,type,( r1_tarski: $i > $i > $o )).
thf(reflexivity_r1_tarski,axiom,( ! [A: $i] : ! [B: $i] : ( r1_tarski @ A @ A ) ),file(tarski,r1_tarski)).
thf(antisymmetry_r2_hidden,axiom,( ! [A: $i] : ! [B: $i] : ( ( r2_hidden @ A @ B ) => ~ ( r2_hidden @ B @ A ) ) ),file(hidden,r2_hidden)).
thf(dt_c1_5__zfmisc_1,axiom,( $true ),file(zfmisc_1,c1_5__zfmisc_1)).
thf(s3_xboole_0,axiom,( ! [A: $i > $o] : ! [B: $i] : ! [C: $i] : ( ( ! [D: $i] : ( ( r2_hidden @ D @ B ) <=> ( A @ D ) ) & ! [D: $i] : ( ( r2_hidden @ D @ C ) <=> ( A @ D ) ) ) => ( = @ B @ C ) ) ),file(xboole_0,s3_xboole_0)).
thf(e1_5_1_2__zfmisc_1,conjecture,( ! [A: $i] : ! [B: $i] : ( ( ! [C: $i] : ( ( r2_hidden @ C @ A ) <=> ( r1_tarski @ C @ c1_5__zfmisc_1 ) ) & ! [C: $i] : ( ( r2_hidden @ C @ B ) <=> ( r1_tarski @ C @ c1_5__zfmisc_1 ) ) ) => ( = @ A @ B ) ) ),file(zfmisc_1,e1_5_1_2__zfmisc_1)).
