fact: Definition transport_paths_FlFr {A B : Type} {f g : A -> B} {x1 x2 : A} (p : x1 = x2) (q : f x1 = g x1) : transport (fun x => f x = g x) p q = (ap f p)^ @ q @ (ap g p).
imports: Basics.Overture Basics.Equivalences Basics.PathGroupoids Basics.Tactics