fact: Definition XbinOpXY (X Y : Set) (Yeq : Y -> Y -> Prop) (f g : @PartialFunctionXY X Y Yeq) (op : Y -> Y -> Y) : (forall x y z t : Y, Yeq x y -> Yeq z t -> Yeq (op x z) (op y t)) -> @PartialFunctionXY X Y Yeq.
imports: List QArith ConstructiveReals ConstructiveAbs ConstructiveMinMax ConstructiveSum ConstructiveLimits ConstructiveRcomplete