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- Newsgroups: sci.math
- Path: sparky!uunet!usc!sol.ctr.columbia.edu!destroyer!ncar!isis.cgd.ucar.edu!steele
- From: steele@isis.cgd.ucar.edu (Alfred Steele)
- Subject: Re: Question on divergence of series given condition
- Message-ID: <1992Sep5.055855.21996@ncar.ucar.edu>
- Sender: news@ncar.ucar.edu (USENET Maintenance)
- Organization: Climate and Global Dynamics Division/NCAR, Boulder, CO
- References: <1992Sep4.174051.3223@eagle.lerc.nasa.gov>
- Date: Sat, 5 Sep 1992 05:58:55 GMT
- Lines: 42
-
- In article <1992Sep4.174051.3223@eagle.lerc.nasa.gov> sshws@convx1.lerc.nasa.gov (Herb Schilling) writes:
- >>
- >>We think there is a theorem ( By Weierstrauss ? ) on this subject
- >>but we cannot find
- >>it. Can anyone out there tell us if the following is true?
- >>
- >>=======================================================================
- >>
- >> If the terms, a , of a series have the following property:
- >> n
- >>
- >> a A
- >> n+1 1 n
- >> ------ = 1 - ----- + ----- as n -> oo
- >> a n n
- >> n
- >>
- >>
- >>
- >> where A -> 0 as n -> oo
- >> n
- >>
- >>
- >>
- >>
- >> then does sum of the a diverge ?
- >> n
- >>
- >>
- >> Thanks in advance for the help.
- >>--
- >>Herb Schilling , NASA Lewis Research Center , 21000 Brookpark Road, MS 142-5
- >>Cleveland, Ohio 44135 . (216) 433-8955 sshws@convx1.lerc.nasa.gov
-
-
-
- The formula is not the same but you can find more that you need in:
- Knopp "Theory and Application of Infinite Series" Blackie && Son pg. 288 #172
- J. Pierpont "Functions of a Complex Variable" Dover pg. 52 article27 of
- chapter II
-
- Alfred T. Steele
-