fact: Definition abs_fun' {A : Type} {P : A -> Type} (x : A) {B : _} (c : P x) : (forall (f : forall x, P x), M (B (f x))) -> M (B c).
imports: Mtac2(Base MTele Logic) Coq(JMeq) ssreflect BinNat Mtac2.lib.Datatypes Mtac2