fact: Definition make_RoofEqclass {x y : ob C} (A : hsubtype (Roof x y)) (H : iseqclass (make_eqrel _ (RoofEqrel x y)) A) : RoofEqclass x y := tpair _ A H.
imports: UniMath.Foundations.PartD UniMath.Foundations.Propositions UniMath.Foundations.Sets UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Functors