{A B : Type} {f g : A -> B} (p : forall x, f x = g x) {x y : A} (q : x = y) : (ap f q) = (p x) @ (ap g q) @ (p y)^. Proof. apply moveL_pV. apply concat_Ap. Defined.
Require Import Basics.Overture Basics.Tactics.