Lemma isrdistr_mult_minusNonnegativeRationals: ∏ x y z : NonnegativeRationals, (x - y) * z = x * z - y * z. Proof. intros x y z. rewrite !(iscomm_multNonnegativeRationals _ z). now apply isldistr_mult_minusNonnegativeRationals. Qed.
Require Import UniMath.MoreFoundations.Tactics. Require Import UniMath.MoreFoundations.PartA. Require Import UniMath.MoreFoundations.Sets. Require Import UniMath.MoreFoundations.Orders. Require Import UniMath.RealNumbers.Sets. Require Import UniMath.RealNumbers.Fields. Require Import UniMath.OrderTheory.Lattice.Lattice. Require Import UniMath.RealNumbers.Prelim.