fact: Definition Kernel_up_to_iso_eq {x y z : C} (f : x --> y) (g : y --> z) (K : Kernel Z g) (h : z_iso x K) (H : f = h · (KernelArrow K)) : f · g = ZeroArrow Z x z.
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