% Mizar problem: t6_boole,boole,121,47 
fof(t6_boole, conjecture,  (! [A] :  (v1_xboole_0(A) => A=k1_xboole_0) ) ).
fof(dt_o_0_0_xboole_0, axiom, v1_xboole_0(o_0_0_xboole_0)).
fof(dt_k1_xboole_0, axiom, $true).
fof(d2_xboole_0, axiom, k1_xboole_0=o_0_0_xboole_0).
fof(l6_boole, axiom,  (! [A] :  (v1_xboole_0(A) => A=k1_xboole_0) ) ).
