Definition z_iso_to_inv2cell {a b : B} {f g : hom a b} (α : z_iso f g) : invertible_2cell f g. Proof. use make_invertible_2cell. - exact (pr1 α). - exact (is_z_iso_to_is_inv2cell _ (pr2 α)). 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.Functors. Require Import UniMath.Bicategories.Core.Bicat. Import Bicat.Notations.