fact: Definition RoofDecomposeEqrel {x y : C} (R : Roof x y) : (make_eqrel _ (RoofEqrel x y)) R (roof_comp (InvRoofFromMorInSom (RoofMor1 R) (RoofMor1Is R)) (MorToRoof (RoofMor2 R))).
imports: UniMath.Foundations.PartD UniMath.Foundations.Propositions UniMath.Foundations.Sets UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Functors