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MathGroup Archive 2004

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Re: Condition , FullSimplify

  • To: mathgroup at
  • Subject: [mg53179] Re: Condition , FullSimplify
  • From: David Bailey <dave at>
  • Date: Tue, 28 Dec 2004 06:30:21 -0500 (EST)
  • References: <cqotbu$cj4$>
  • Sender: owner-wri-mathgroup at

sebastian.cohen at wrote:
> Wolfram Staff,
> I would like to know why the following class of statements don't work
> given
> expr /; condition // FullSimplify
> Although one may express them easily as
> FullSimplify[expr,cond]
> I find it useful and practical using the first notation.
> Is there a way to tell Mathematica at the end expressions both the
> conditions and to fullsimplify without having to write the whole
> fullsimplify function?
> Thanks in advance,
> Sebastian Cohen S

It seems a little strange to invent a piece of syntax and then ask why 
Mathematica does not support it! If you really need this functionality, 
why not roll your own:


With this definition you can write things like:

Sqrt[x^2] /; x > 0 // myFullSimplify


I hope that helps,

David Bailey

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