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MathGroup Archive 2006

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Re: RE: FullSimplify and HypergeometricPFQ

  • To: mathgroup at smc.vnet.net
  • Subject: [mg72087] Re: [mg72050] RE: [mg72035] FullSimplify and HypergeometricPFQ
  • From: Andrzej Kozlowski <akoz at mimuw.edu.pl>
  • Date: Mon, 11 Dec 2006 04:55:21 -0500 (EST)
  • References: <NDBBJGNHKLMPLILOIPPOKEKOFEAA.djmp@earthlink.net> <E3FB0E44-E3F0-4FC1-88A9-98DFB9B65DAC@mimuw.edu.pl>

On 11 Dec 2006, at 09:45, Andrzej Kozlowski wrote:

> Expressions involving semi-algebraic functions (polynomials with  
> radicals) already suffer from branching problems, which make them  
> often impossible do deal with in practice.

I should not have used the phrase "semi-algebraic functions" here;  
that would be the correct description only in the real case. I guess  
in the complex case they should be referred to as "elements of some  
algebraic extension of the the field of rational functions" - maybe  
calling them "algebraic functions" is O.K.

Andrzej Kozlowski


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