fact: Definition XposPart {R : ConstructiveReals} {X : Set} (f : @PartialFunction R X) : PartialFunction X := Xscale (CR_of_Q _ (1#2)) (Xplus f (Xabs f)).
imports: List QArith ConstructiveReals ConstructiveAbs ConstructiveMinMax ConstructiveSum ConstructiveLimits ConstructiveRcomplete