simplifying operator experessions with Dot, Times and Plus
- To: mathgroup at smc.vnet.net
- Subject: [mg35481] simplifying operator experessions with Dot, Times and Plus
- From: "JL" <jl at aol.com>
- Date: Tue, 16 Jul 2002 04:49:38 -0400 (EDT)
- Organization: University of Pittsburgh
- Sender: owner-wri-mathgroup at wolfram.com
I am trying to expand a large expression that has terms that look as follows: -ex[0,1].(ex[0,1].ex[1,2]-ex[1,2].ex[0,1]) where ex[i,j] are unevaluated expressions. I would like Mathematica to simplify this and analogous expressions so that they read: ex[0,1].ex[1,2].ex[0,1]-ex[0,1].ex[0,1].ex[1,2] However, I cannot seem to find anything that will work. The problem is that I need to keep track of the order of the expressions ex[i,j]. If Dot were replaced by Times, there would be no problem whatsoever. If anyone knows how to help me with this problem, I would greatly appreciate it. Thanks, Jeremy Levy jlevy at pitt.edu