fact: Definition isCokernel {x y z : C} (f : x --> y) (g : y --> z) (H : f · g = (ZeroArrow Z x z)) : UU := ∏ (w : C) (h : y --> w) (H : f · h = ZeroArrow Z x w), ∃! φ : z --> w, g · φ = 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