fact: Definition valid (f : R -> R) (uf vf : (R -> Prop) -> Prop) yi := (yi <> Inan -> ex_RInt_gen f uf vf) /\ contains yi (Xreal (RInt_gen f uf vf)).
imports: Coq(BinPos Reals List) Coquelicot(Coquelicot) Coquelicot Xreal Interval Priority