fact: Definition CokernelCommutes {y z : C} {g : y --> z} (CK : Cokernel g) (w : C) (h : z --> w) (H : g · h = ZeroArrow Z y w) : (CokernelArrow CK) · (CokernelOut CK w h H) = h := pr2 (iscontrpr1 (CokernelisCokernel CK w h H)).
imports: UniMath.Foundations.PartD UniMath.Foundations.Propositions UniMath.Foundations.Sets UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Epis UniMath.CategoryTheory.Limits.Coequalizers UniMath.CategoryTheory.Limits.Zero