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MathGroup Archive 1996

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HELP:problems simplifying big matrices

  • To: mathgroup at smc.vnet.net
  • Subject: [mg4720] HELP:problems simplifying big matrices
  • From: "Stephen O'Sullivan" <so at cp.dias.ie>
  • Date: Sat, 31 Aug 1996 03:57:38 -0400
  • Organization: Dublin Institute for Advanced Studies
  • Sender: owner-wri-mathgroup at wolfram.com

I am a relative newcomer to mathematica. I wish to simplify large matrices by
identifying occurrences of specific algebraic expressions and replacing them
with a variable name. The problem is that unless the expressions to be
replaced occur in precisely the form specified by the given transformation 
rule it doesn't spot them. Any simple solutions?
Also, is there any way to identify and collect vector powers (ie. v^2 instead of 
v[1]^2+v[2]^2+v[3]^2 for example) ?
Thanks for any suggestions, 
	Stephen O'Sullivan. 

-- 
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Stephen O'Sullivan                      | Telephone: +353-1-6621333 
Dublin Institute for Advanced Studies	| Facsimile: +353-1-6621477
School of Cosmic Physics		|     email:  so at cp.dias.ie   
5 Merrion Square                        |     
Dublin 2  Ireland                       | WWW: http://atlas.cp.dias.ie/~so/
===========================================================================

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