fact: Definition RoofEqclassEqRoof {x y : ob C} (RE : RoofEqclass x y) (R : Roof x y) (HR : RoofEqclassIn RE R) : RE = RoofEqclassFromRoof R.
imports: UniMath.Foundations.PartD UniMath.Foundations.Propositions UniMath.Foundations.Sets UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Functors