proposition: Lemma ArrowsFromZero (Z : Zero) (b : C) (f g : Z --> b) : f = g.
proof: Proof. apply proofirrelevancecontr. apply (pr1 (pr2 Z) _). Qed.
imports: UniMath.Foundations.PartD UniMath.Foundations.Propositions UniMath.Foundations.Sets UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Univalence UniMath.CategoryTheory.opp_precat UniMath.CategoryTheory.Limits.Initial UniMath.CategoryTheory.Limits.Terminal