fact: Definition nat_trans_comp {C:precategory_data}{C' : precategory} (F G H: functor_data C C') (a : nat_trans F G) (b : nat_trans G H): nat_trans F H := tpair _ _ (is_nat_trans_comp a b).
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