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Substitute all known relations in result

• To: mathgroup at smc.vnet.net
• Subject: [mg86614] Substitute all known relations in result
• From: "Dr. Johannes Zellner" <johannes.zellner at gmail.com>
• Date: Sat, 15 Mar 2008 03:09:26 -0500 (EST)

Hi,

How do I make mathematica to display results with all known
relations / variables?
E.g. if a result is
   x^2+y^2
and before I'd defined
   r = x^2+y^2
I'd like mathematica to display the result rather as "r".

And: I'd like mathematica to do this for each relation defined before
w/o specifying every possible replacement.

Any help much appreciated.

• Follow-Ups:
  • Re: Substitute all known relations in result
    • From: Andrzej Kozlowski <akoz@mimuw.edu.pl>