Definition pb_cone_cell (p : pb_cone) : invertible_2cell (pb_cone_pr1 p · f) (pb_cone_pr2 p · g) := pr222 p.
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.Bicategories.Core.Bicat. Import Bicat.Notations. Require Import UniMath.Bicategories.Core.Invertible_2cells. Require Import UniMath.Bicategories.Core.Univalence.