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MathGroup Archive 1999

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Re: A little problem with positive numbers

  • To: mathgroup at smc.vnet.net
  • Subject: [mg18104] Re: A little problem with positive numbers
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Thu, 17 Jun 1999 12:26:40 -0400
  • Organization: Universitaet Leipzig
  • References: <7jucr3$5ef@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hi Nicola,

what is with

x /: Positive[x]:=True

?

Regards
  Jens

attico wrote:
> 
> How can i say to Mathematica that
> a number im using is a positive one?
> I would like to try with
> 
> SetAttributes[x,Positive]
> 
> but, with my surprise, ive discovered
> that this attribute is inexistent.
> Someone can help me?
> 
> Thanx
> 
> Nicola
> nicola at linuz.sns.it


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