proposition: Lemma Rabs_Rmult : ∏ x y : Reals, (Rabs (x * y)%R = Rabs x * Rabs y)%NR.
proof: Proof. exact hr_abs_mult. Qed.
imports: UniMath.Algebra.Groups UniMath.Foundations.Preamble UniMath.MoreFoundations.Orders UniMath.MoreFoundations.Tactics UniMath.OrderTheory.Lattice.Lattice UniMath.RealNumbers.Prelim UniMath.RealNumbers.Sets UniMath.RealNumbers.NonnegativeRationals UniMath.RealNumbers.NonnegativeReals