% Mizar problem: t123_gtarski3,gtarski3,3366,37 
fof(t123_gtarski3, conjecture,  (! [A] :  (l1_gtarski1(A) =>  (v8_gtarski1(A) <=> v8_gtarski3(A)) ) ) ).
fof(existence_l1_struct_0, axiom,  (? [A] : l1_struct_0(A)) ).
fof(dt_l1_struct_0, axiom, $true).
fof(existence_l1_gtarski1, axiom,  (? [A] : l1_gtarski1(A)) ).
fof(dt_l1_gtarski1, axiom,  (! [A] :  (l1_gtarski1(A) => l1_struct_0(A)) ) ).
