proposition: Lemma minusNonnegativeRationals_zero_r : ∏ x : NonnegativeRationals, x - 0 = x.
proof: Proof. intros x. rewrite <- (isrunit_zeroNonnegativeRationals (x - 0)). apply minusNonnegativeRationals_plus_r. now apply isnonnegative_NonnegativeRationals. Qed.
imports: UniMath.MoreFoundations.Tactics UniMath.MoreFoundations.PartA UniMath.MoreFoundations.Sets UniMath.MoreFoundations.Orders UniMath.RealNumbers.Sets UniMath.RealNumbers.Fields UniMath.Algebra.DivisionRig UniMath.OrderTheory.Lattice.Lattice UniMath.RealNumbers.Prelim