fact: Definition pr1_maponpaths_idtoiso {C D : category} (F : C ⟶ D) {a b : C} (e : a = b) : pr1 (idtoiso (maponpaths F e)) = #F (pr1 (idtoiso e)).
imports: UniMath.Foundations.PartD UniMath.Foundations.Propositions UniMath.Foundations.Sets UniMath.MoreFoundations.PartA UniMath.MoreFoundations.Univalence UniMath.MoreFoundations.Tactics UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.TransportMorphisms UniMath.CategoryTheory.Core.Univalence