proposition: Lemma minusNonnegativeRationals_zero_l : ∏ x : NonnegativeRationals, 0 - x = 0.
proof: Proof. intros x. apply minusNonnegativeRationals_eq_zero. 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