fact: Definition is_functor_sub_precategory_inclusion (C : category) (C':sub_precategories C) : is_functor (sub_precategory_inclusion_data C C').
imports: UniMath.Foundations.Sets UniMath.MoreFoundations.PartA UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.Isos