proposition: Lemma ispositive_Rone : 0 < 1.
proof: Proof. rewrite <- NRNRtoR_zero, <- NRNRtoR_one. apply NRNRtoR_lt. rewrite !isrunit_zero_plusNonnegativeReals. apply ispositive_apNonnegativeReals. apply isnonzeroNonnegativeReals. 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