proposition: Lemma InitialArrowUnique (I : Initial) (a : C) (f : C⟦InitialObject I,a⟧) : f = InitialArrow I _.
proof: Proof. now apply colimArrowUnique; intro v; induction v. Defined.
imports: UniMath.Foundations.PartD UniMath.Foundations.Propositions UniMath.Foundations.Sets UniMath.MoreFoundations.Tactics UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Limits.Graphs.Colimits UniMath.CategoryTheory.Limits.Graphs.EqDiag UniMath.CategoryTheory.Limits.Initial