fact: Definition functor_forall `{P : A -> Type} `{Q : B -> Type} (f0 : B -> A) (f1 : forall b:B, P (f0 b) -> Q b) : (forall a:A, P a) -> (forall b:B, Q b) := (fun g b => f1 _ (g (f0 b))).
imports: Basics.Overture Basics.Equivalences Basics.PathGroupoids Basics.Tactics Basics.Trunc Basics.Contractible Basics.Trunc (istrunc_forall)