fact: Definition nat_trans_eq_pointwise {C C' : precategory_data} {F F' : functor_data C C'} {a a' : nat_trans F F'}: a = a' -> ∏ x, a x = a' x.
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