fact: Definition Xscale {R : ConstructiveReals} {X : Set} (a : CRcarrier R) (f : PartialFunction X) : PartialFunction X := Xop X f (fun x => a * x) (CRmult_morph R a a (CReq_refl a)).
imports: List QArith ConstructiveReals ConstructiveAbs ConstructiveMinMax ConstructiveSum ConstructiveLimits ConstructiveRcomplete