fact: Definition KernelisKernel {y z : C} {g : y --> z} (K : Kernel g) : isKernel (KernelArrow K) g (KernelCompZero K) := pr2 (pr2 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