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MathGroup Archive 2003

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Re: Multiple sum excluding some terms

  • To: mathgroup at smc.vnet.net
  • Subject: [mg44113] Re: Multiple sum excluding some terms
  • From: guillerm at aida.usal.es (Guillermo Sanchez)
  • Date: Thu, 23 Oct 2003 07:15:05 -0400 (EDT)
  • References: <bn5dpi$6aa$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

I have realized that this function works fine

Sum[If[j == i, 0, m[j, i]], {j, 1, 3}, {i, 1, 2}]

guillerm at aida.usal.es (Guillermo Sanchez) wrote in message news:<bn5dpi$6aa$1 at smc.vnet.net>...
> Hi friends
> 
> How make a multiple sum (example: Sum[m[i, j], {j, 1, 3}, {i, 1, 2}])
> excluding terms i = j?
> 
> Guillermo Sanchez


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