fact: Definition nat_trans_id {C:precategory_data}{C' : precategory} (F : functor_data C C') : nat_trans F F := tpair _ _ (is_nat_trans_id F).
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