proposition: Proposition isaprop_is_end (w : wedge) : isaprop (is_end w).
proof: Proof. use impred ; intro. apply isapropiscontr. 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.Products UniMath.CategoryTheory.Limits.Equalizers