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MathGroup Archive 2001

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Re: Simplify

  • To: mathgroup at smc.vnet.net
  • Subject: [mg32013] Re: Simplify
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Wed, 19 Dec 2001 04:28:45 -0500 (EST)
  • Organization: Universitaet Leipzig
  • References: <9vmrje$hh7$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,

for real variables 

PowerExpand[(a^b)^(1/b)]

will do that for you. But in general you have to
take care of the branch cuts in the complex plane.


a^b^(1/b) is a^(b^(1/b)) and will never simplifyed
to a

Regards
  Jens

Matthias.Bode at oppenheim.de wrote:
> 
> Dear Colleagues,
> 
> why should I not expect MATHEMATICA to (Full)Simplify
> 
> (a^b)^(1/b) or a^b^(1/b) to a?
> 
> Best regards,
> 
> Matthias Bode
> Sal. Oppenheim jr. & Cie. KGaA
> Koenigsberger Strasse 29
> D-60487 Frankfurt am Main
> GERMANY
> Tel.: +49(0)69 71 34 53 80
> Mobile: +49(0)172 6 74 95 77
> Fax: +49(0)69 71 34 95 380
> E-mail: matthias.bode at oppenheim.de
> Internet: http://www.oppenheim.de


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