fact: Definition constant_nat_trans (C₁ : category) {C₂ : category} {x y : C₂} (f : x --> y) : nat_trans (constant_functor C₁ C₂ x) (constant_functor C₁ C₂ y).
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.TransportMorphisms UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.Univalence