Transformation rule problem
- To: mathgroup at smc.vnet.net
- Subject: [mg58041] Transformation rule problem
- From: Oliver Buerschaper <groo137vy at yahoo.co.uk>
- Date: Thu, 16 Jun 2005 07:19:35 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Hi there, I'm stuck with a problem concerning transformation rules and was wondering whether somebody could give me a hint on this. I wouldn't mind a complete solution either ;-) Here's the problem: In a sum like for example a^2 b^4 + a^3 b + a^5 + a^5 b I'd like to replace every instance of the product (a b) by a different expression, let's call it d. Thus my result should look like d^2 b^2 + a^2 d + a^5 + a^4 d This replacement is required to work for arbitrary a and b (especially when they're functions). I've already tried some simple transformation rules but they couldn't do the job. Cheerio, Oliver