proposition: Lemma islinv_Rinv : ∏ (x : Reals) (Hx0 : x ≠ 0), (Rinv x Hx0) * x = 1.
proof: Proof. exact islinv_CFinv. 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