Lemma istrans_Dcuts_le_rel : istrans Dcuts_le_rel. Proof. intros x y z Hxy Hyz r Xr. refine (Hyz _ _). now refine (Hxy _ _). Qed.
Require Import UniMath.MoreFoundations.Orders. Require Import UniMath.MoreFoundations.Tactics. Require Import UniMath.MoreFoundations.Notations. Require Import UniMath.RealNumbers.Sets. Require Import UniMath.OrderTheory.Lattice.Lattice. Require Import UniMath.RealNumbers.Prelim. Require Import UniMath.RealNumbers.NonnegativeRationals.