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MathGroup Archive 2005

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Re: Skipping Elements in Sum

  • To: mathgroup at smc.vnet.net
  • Subject: [mg61092] Re: Skipping Elements in Sum
  • From: "Jens-Peer Kuska" <kuska at informatik.uni-leipzig.de>
  • Date: Mon, 10 Oct 2005 02:39:53 -0400 (EDT)
  • Organization: Uni Leipzig
  • References: <diabl5$ihc$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,

Sum[(1 - KroneckerDelta[i, j]), {i, 6}, {j, 6}]

will do that.

Regards

  Jens

<qcadesigner at gmail.com> schrieb im Newsbeitrag 
news:diabl5$ihc$1 at smc.vnet.net...
| Does anyone know how to skip elements using the 
mathematica sum? e.g.
| take the sum of all i, where i not equal to j.
| 



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