fact: Definition KernelofZeroArrow_iso (x y : C) (K : Kernel (@ZeroArrow C Z x y)) : z_iso K x := make_z_iso (KernelArrow K) (from_Kernel_to_Kernel (KernelofZeroArrow x y) K) (KernelofZeroArrow_is_iso K).
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