proposition: Lemma is_weq_precat_paths_to_iso_hset (A B : ob HSET): isweq (@idtoiso _ A B).
proof: Proof. rewrite hset_id_weq_iso_is. apply (pr2 (hset_id_weq_z_iso A B)). Defined.
imports: UniMath.Foundations.PartD UniMath.Foundations.Sets UniMath.MoreFoundations.Tactics UniMath.Foundations.UnivalenceAxiom UniMath.Foundations.HLevels UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Univalence UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Categories.HSET.Core UniMath.CategoryTheory.Categories.HSET.MonoEpiIso