proposition: Lemma idtoiso_inv (C : category) (a a' : ob C) (p : a = a') : idtoiso (!p) = z_iso_inv_from_z_iso (idtoiso p).
proof: Proof. destruct p. simpl. apply z_iso_eq. apply idpath. Defined.
imports: UniMath.Foundations.PartA UniMath.Foundations.Sets UniMath.MoreFoundations.PartA UniMath.MoreFoundations.Tactics UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos