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MathGroup Archive 2005

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Re: Preventing Times[x,x] from becoming Power[x,2]

  • To: mathgroup at smc.vnet.net
  • Subject: [mg53686] Re: Preventing Times[x,x] from becoming Power[x,2]
  • From: David Bailey <dave at Remove_Thisdbailey.co.uk>
  • Date: Sun, 23 Jan 2005 02:02:16 -0500 (EST)
  • References: <csqs3u$1te$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Josef Karthauser wrote:
> I was wondering whether anyone knows the answer to this one.
> 
> I've got a function, let's call it F[...]. If I enter F[s] F[s]
> into mathematica it "simplifies" the resulting expression, making it
> become Power[F[s],2].  Is there any way to prevent this automatic
> simplification on F[] objects?
> 
> Joe
Hi,

The fact that you don't want that simplification to take place suggests 
to me that you do not intend F[s]F[s] to mean ordinary multiplication. 
In that case, it would be better to use one of the unassigned operators 
(such as \[CircleTimes]) to represent 'not multiplication'. You 
obviously will not get spurious simplifications, and you can define the 
tru behaviour as you want.

David Bailey
dbaileyconsultancy.co.uk


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