Operations on inf



I've been away for a week, but inf is "undirected infinity" then are the two
Symbols, each  inf,  the SAME?   If not, then inf*inf might be -inf.
Whatever that means.

Like intervals, [-1,1] * [-1,1] ... Is it the same interval or two different
objects that happen to have the same description.

I haven't read through all the messages on inf though..

RJF 


> -----Original Message-----
> From: maxima-bounces at math.utexas.edu 
> [mailto:maxima-bounces at math.utexas.edu] On Behalf Of Daniel Lakeland
> Sent: Wednesday, March 07, 2007 2:00 PM
> To: maxima at math.utexas.edu
> Subject: Re: [Maxima] Operations on inf
> 
> On Wed, Mar 07, 2007 at 03:54:24PM -0500, Stavros Macrakis wrote:
> 
> > Why?  Both inf*inf and inf^2 go to inf regardless of how 
> you approach it.
> 
> if the inf^2 is going to be used in a further computation they may not
> be equivalent... such as limit(limit(x^2/(1+y^3),y,inf),x,inf) or
> something like that...
> 
> 
> -- 
> Daniel Lakeland
> dlakelan at street-artists.org
> http://www.street-artists.org/~dlakelan
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