fact: Definition RoofEqclass (x y : ob C) : UU := ∑ A : hsubtype (Roof x y), iseqclass (make_eqrel _ (RoofEqrel x y)) A.
imports: UniMath.Foundations.PartD UniMath.Foundations.Propositions UniMath.Foundations.Sets UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Functors