Lemma help_eq : ζ ▹ p = (((k ◃ α) • δp) • (f ◃ α ^-1)) • (β ▹ p). Proof. rewrite !vassocl. use vcomp_move_L_pM. { is_iso. apply property_from_invertible_2cell. } cbn. rewrite <- vcomp_whisker. rewrite q. rewrite !vassocl. rewrite <- vcomp_whisker. apply idpath. Qed.
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.DisplayedCats.StreetFibration. Require Import UniMath.Bicategories.Core.Bicat. Import Bicat.Notations. Require Import UniMath.Bicategories.Core.Invertible_2cells. Require Import UniMath.Bicategories.Core.Univalence.