Definition nat_iso_inv {C D : precategory} {F G : C ⟶ D} (μ : nat_iso F G) : nat_iso G F. Proof. use make_nat_iso. - exact (nat_iso_inv_trans μ). - intro x. apply is_iso_inv_from_iso. Defined.
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.Core.Isos. Require Import UniMath.CategoryTheory.Core.TransportMorphisms. Require Import UniMath.CategoryTheory.Core.Functors. Require Import UniMath.CategoryTheory.Core.Univalence.