fact: Definition extendable_over_postcompose' (n : nat) {A B : Type} (C : B -> Type) (f : A -> B) (ext : ExtendableAlong n f C) (D E : forall b, C b -> Type) (g : forall b c, D b c <~> E b c) : ExtendableAlong_Over n f C D ext -> ExtendableAlong_Over n f C E ext.
imports: HoTT.Basics HoTT.Types Extensions ReflectiveSubuniverse Accessible