fact: Definition domainXsumIncReverse : forall {R : ConstructiveReals} {X : Set} (fn : nat -> @PartialFunction R X) (k n : nat) (x : X) (xD : Domain (Xsum fn n) x), le k n -> Domain (fn k) x.
imports: List QArith ConstructiveReals ConstructiveAbs ConstructiveMinMax ConstructiveSum ConstructiveLimits ConstructiveRcomplete