Definition is_invertible_2cell_inv {C : prebicat_data} {a b : C} {f g : a --> b} {η : f ==> g} (inv_η : is_invertible_2cell η) : is_invertible_2cell (inv_η^-1) := make_is_invertible_2cell (vcomp_linv inv_η) (vcomp_rinv inv_η).
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.Functors. Require Import UniMath.CategoryTheory.Core.NaturalTransformations. Require Import UniMath.CategoryTheory.PrecategoryBinProduct.