fact: Definition iscomm_plusNonnegativeReals: ∏ x y : NonnegativeReals, x + y = y + x := iscomm_CCDRplus (X := NonnegativeReals).
imports: UniMath.MoreFoundations.Orders UniMath.MoreFoundations.Tactics UniMath.MoreFoundations.Notations UniMath.RealNumbers.Sets UniMath.Algebra.ConstructiveStructures UniMath.OrderTheory.Lattice.Lattice UniMath.RealNumbers.Prelim UniMath.RealNumbers.NonnegativeRationals