Definition cp_inverse_cp (A:Type) (B:A->Type) (a1 a2:A) (b1:B a1) (b2:B a2) (p q:a1=a2) (α : p=q) (t : PathOver q b1 b2) : cp α (cp (! α) t) = t. Proof. now induction α. Defined.
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.Tactics. Require Import UniMath.MoreFoundations.PartA.