proposition: Lemma isziso_from_Zero_to_Zero (Z Z' : Zero) : is_z_isomorphism (ZeroArrowTo Z Z').
proof: Proof. exists (ZeroArrowTo Z' Z). split; apply pathsinv0; apply ZeroEndo_is_identity. 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