fact: Definition RoofEqclassEq {x y : ob C} (RE1 RE2 : RoofEqclass x y) (H1 : ∏ (R : Roof x y) (H : (pr1 RE1) R), (pr1 RE2) R) (H2 : ∏ (R : Roof x y) (H : (pr1 RE2) R), (pr1 RE1) R) : RE1 = RE2.
imports: UniMath.Foundations.PartD UniMath.Foundations.Propositions UniMath.Foundations.Sets UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Functors