Definition left_equivalence_unit_iso {a b : B} {f : a --> b} (αe : left_equivalence f) : invertible_2cell (identity a) (f · left_adjoint_right_adjoint αe). Proof. refine (left_adjoint_unit αe,, _). apply αe. 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.