fact: Definition dpath_path_Fr {A B : Type} {g : A -> B} {x : B} {y1 y2 : A} (p : y1 = y2) (q : x = g y1) (r : x = g y2) : q @ ap g p = r <~> transport (fun y => x = g y) p q = r.
imports: Basics.Overture Basics.Equivalences Basics.PathGroupoids Basics.Tactics