fact: Definition is_nat_z_iso {C D : precategory_data} {F G : functor_data C D} (μ : nat_trans_data F G) : UU := ∏ (c : C), is_z_isomorphism (μ c).
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