proposition: Lemma istrans_SubObj_rel (c : C) : istrans (SubObj_rel c).
proof: Proof. apply istransquotrel, istrans_monorel. Qed.
imports: UniMath.Foundations.PartD UniMath.Foundations.Propositions UniMath.Foundations.Sets UniMath.MoreFoundations.Tactics UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.slicecat UniMath.CategoryTheory.Monics UniMath.CategoryTheory.Subcategory.Core UniMath.CategoryTheory.Categories.HSET.Core UniMath.CategoryTheory.Limits.Pullbacks UniMath.CategoryTheory.opp_precat