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