Definition hor_sq_identity {C : predoublecategory_sq_hor_data} {a b: C} (f: a -v-> b) : (sqq (hor_identity a) f f (hor_identity b)) := get_hor_sq_identity a b f.
Require Import UniMath.Foundations.Propositions. Require Import UniMath.Foundations.Sets. Require Import UniMath.MoreFoundations.PartA. Require Import UniMath.MoreFoundations.Notations. Require Import UniMath.CategoryTheory.Core.Prelude. Require Import UniMath.CategoryTheory.TwoSidedDisplayedCats.TwoSidedDispCat. Require Import UniMath.CategoryTheory.TwoSidedDisplayedCats.Univalence.