▁Hard y , ▁G . ▁H ., ▁A ▁Cour se ▁of ▁P ure ▁Mathemat ics , ▁N inth ▁edition , ▁Cambridge ▁University ▁Press , ▁ 1 9 4 6 . ▁( pp .   3 7 9 – 3 8 0 ). ▁ ▁V ox man , ▁William ▁L ., ▁Advanced ▁Calcul us : ▁An ▁Introduction ▁to ▁Modern ▁Analysis , ▁Marcel ▁De k ker , ▁Inc ., ▁New ▁York , ▁ 1 9 8 1 . ▁( § 8 . B . 1 3 – 1 5 ) ▁. ▁ ▁External ▁links ▁▁ ▁Proof ▁at ▁Planet Math . org ▁ ▁Category : Con ver gence ▁tests <0x0A> </s> ▁R ED I RECT ▁Ch aut au qua ▁County , ▁New ▁York <0x0A> </s> ▁Donald ▁Charles ▁Mc Call ▁( born ▁September ▁ 2 1 , ▁ 1 9 4 4 ▁in ▁B irmingham , ▁Alabama ) ▁is ▁a ▁former ▁professional ▁American ▁football ▁player ▁who ▁played ▁running ▁back ▁for ▁four ▁seasons ▁for ▁the ▁New ▁Orleans ▁Sain ts ▁and ▁the ▁Pitts burgh ▁Ste el ers . ▁ ▁Category : 1 9 4 4 ▁birth s ▁Category : S ports people ▁from ▁B irmingham , ▁Alabama ▁Category : Play ers ▁of ▁American ▁football ▁from ▁Alabama ▁Category : American ▁football ▁running ▁back s ▁Category : US C ▁Tro j ans ▁football ▁players ▁Category : P itt s burgh ▁Ste el ers ▁players ▁Category : New ▁Orleans ▁Sain ts ▁players ▁Category : L iving ▁people ▁Category : S ou thern ▁California ▁Sun ▁players <0x0A> </s> ▁Tal ara ▁mel an ost