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Re: Exchanging the order of summation
Posted:
Nov 12, 2011 7:34 AM


In article <d76d43c30a634c5cb29e6ab44da4d4e9@CITESHT4.ad.uillinois.edu>, John Washburn <Math@WashburnResearch.org> wrote: > Are there conditions other than uniform convergence or absolut > convergence, which permit the order of summation to interchanged?
It does work more often than you think.
These are *necessary* conditions, which is a lot more than *sufficient* conditions, which so, so far i know, dosn't educate anyone.
If you figure out when this works then you have the greatest paper since Johann Hermis.



