Definition two_cat_cells (C : two_cat_data) {a b : C} (f g : C⟦a, b⟧) : UU := pr12 C a b f g.
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.Core.Setcategories. Require Import UniMath.CategoryTheory.Core.Univalence.