fact: Definition eq_mor_category_of_set_functor_pr1 {C : setcategory} {F : C ⟶ cat_of_setcategory} {x y : total_precategory_data_of_set_functor F} {f g : x --> y} (p : f = g) : pr1 f = pr1 g.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Univalence UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.Setcategories UniMath.CategoryTheory.Categories.CategoryOfSetCategories