fact: Definition apD_pp {A} {P : A -> Type} (f : forall x, P x) {x y z : A} (p : x = y) (q : y = z) : apD f (p @ q) = transport_pp P p q (f x) @ ap (transport P q) (apD f p) @ apD f q.
imports: Basics.Overture Basics.Tactics