Definition elem_sort_idx: ⟦ 2 ⟧ := ●0.
Require Import UniMath.MoreFoundations.Notations. Require Import UniMath.Combinatorics.StandardFiniteSets. Require Import UniMath.Combinatorics.MoreLists. Require Import UniMath.Algebra.Universal.Algebras. Require Import UniMath.Algebra.Universal.Terms.