deffunc H₁( Subset of X) -> Element of ExtREAL = inf (Svc (M,$1));
thus for F1, F2 being Function of (bool X),ExtREAL st ( for A being Subset of X holds F1 . A = H₁(A) ) & ( for A being Subset of X holds F2 . A = H₁(A) ) holds
F1 = F2 from BINOP_2:sch 1(); :: thesis: verum