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Re: Exchanging the order of summation
Posted:
Nov 10, 2011 6:04 PM
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Resent-From: <bergv@illinois.edu>
From: Vladimir Drobot <drobotv@gmail.com>
Date: November 10, 2011 12:50:08 PM MST
To: "sci-math-research@moderators.isc.org"
<sci-math-research@moderators.isc.org>
Subject: Re: Exchanging the order of summation
Reply-To: "sci.math.research@googlegroups.com"
<sci.math.research@googlegroups.com>
It is really quite a trivial observation, but if, in your notation,
f(n, q) is non-negative, then you can interchange the limits anyway you
want.
So you don't need the condition that K is finite in this case.
As ever,
Vlad
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* Vladimir Drobot
* Retired and gainfully unemployed
* http://www.vdrobot.com
* mailto:drobot@pacbell.net
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