Lemma id_identity2 {C : folds_precat} {a : C} {f : a ⇒ a} : f = identity (C:=C^^) _ -> I f. Proof. intro H; rewrite H. apply I_func_I. Qed.
Require Import UniMath.Folds.UnicodeNotations. Require Import UniMath.Foundations.PartD. Require Import UniMath.Foundations.Propositions. Require Import UniMath.Foundations.Sets. Require Import UniMath.Foundations.UnivalenceAxiom. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.Folds.folds_precat.