Definition id2_pb_2cell {p q : pb_cone} (φ : pb_1cell p q) : pb_2cell φ φ. Proof. use make_pb_2cell. - exact (id2 φ). - abstract (rewrite id2_rwhisker, id2_left ; apply idpath). - abstract (rewrite id2_rwhisker, id2_left ; apply idpath). Defined.
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.