Definition rightunitor_is_natiso {C : category} {T : tensor_data C} {I : C} (ru : rightunitor_data T I) : UU := ∏ (x : C), is_z_isomorphism (ru x).
Require Import UniMath.Foundations.All. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.Core.Functors. Require Import UniMath.CategoryTheory.Core.Isos.