forall {A B f g C D} (Q : Wtil A B f g C D -> Type) (cct' : forall a x, Q (cct a x)) (ppt' : forall b y, (ppt b y) # (cct' (f b) y) = cct' (g b) (D b y)) (b:B) (y : C (f b)), apD (Wtil_ind Q cct' ppt') (ppt b y) = ppt' b y.
Require Import HoTT.Basics. Require Import Types.Paths Types.Forall Types.Sigma Types.Arrow Types.Universe. Require Import HoTT.Colimits.Coeq.