Definition runitor_invertible_2cell {B : bicat} {a b : B} (f : a --> b) : invertible_2cell (f · id₁ b) f. Proof. use make_invertible_2cell. - exact (runitor f). - is_iso. 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.