Lemma iso_from_folds_iso_folds_iso_from_iso : iso_from_folds_iso _ _ (folds_iso_from_iso _ _ i) = i. Proof. apply (z_iso_eq(C:=C',,hs)). apply (@id_left C'). 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.CategoryTheory.Core.Isos. Require Import UniMath.Folds.folds_precat. Require Import UniMath.Folds.from_precats_to_folds_and_back.