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MathGroup Archive 2005

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Simple Sum does not simplify

  • To: mathgroup at smc.vnet.net
  • Subject: [mg55472] Simple Sum does not simplify
  • From: ali_tofigh at hotmail.com (Alix)
  • Date: Fri, 25 Mar 2005 05:48:14 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

Here is a simple symbolic sum:

Sum[n a[i] - Sum[a[j], {j, n}], {i, n}]

This should simplify to 0, but it doesn't. Why and is there a way to
get mathematica to work with these kind of sums? I'm using mathematica
5.0.


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