fact: Definition infinite_sum (s:nat -> R) (l:R) : Prop := forall eps:R, eps > 0 -> exists N : nat, (forall n:nat, (n >= N)%nat -> Rdist (sum_f_R0 s n) l < eps).
imports: ArithRing Rdefinitions Raxioms RIneq Rpow_def R_Ifp Rbasic_fun R_sqr SplitAbsolu SplitRmult ArithProp Zpower Ztac