proposition: Proposition postcomp_is_cowedge {a : D} (w : cowedge) (f : w --> a) : is_cowedge (postcomp_cowedge_data w f).
proof: Proof. intros x y g ; cbn. rewrite !assoc. rewrite eq_of_cowedge. apply idpath. Qed.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.OppositeCategory.Core UniMath.CategoryTheory.PrecategoryBinProduct UniMath.CategoryTheory.Limits.Coproducts UniMath.CategoryTheory.Limits.Coequalizers