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Consrtaining Variables

• To: mathgroup at smc.vnet.net
• Subject: [mg26508] Consrtaining Variables
• From: Jeff Hersh <frumple*NOSPAM* at home.com>
• Date: Sat, 30 Dec 2000 01:55:20 -0500 (EST)
• Sender: owner-wri-mathgroup at wolfram.com

I am working on a package where I need to constrain the domain of some 
variables to the non-negative integers. In particular I would like to be 
able for Mathematica to recognize that Abs[a-x] = x-a when x>=a where 
the Abs term is in both the limits and kernal of a Sum.

Thanks.

Jeff
-- 
Jeffrey Hersh,PhD

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