proposition: Lemma KernelEqualizer_eq {x y : ob C} {f : x --> y} (K : Kernel Z f) : KernelArrow K · f = KernelArrow K · ZeroArrow Z x y.
proof: Proof. rewrite ZeroArrow_comp_right. apply KernelCompZero. Qed.
imports: UniMath.Foundations.PartD UniMath.Foundations.Propositions UniMath.Foundations.Sets UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Monics UniMath.CategoryTheory.Limits.Equalizers UniMath.CategoryTheory.Limits.Zero