Forw: Re: What does "infinty as number" mean?
To: Vincent Lefevre <vincent@xxxxxxxxxx>
Cc: Dan Zuras Intervals <intervals08@xxxxxxxxxxxxxx>
From: Dan Zuras Intervals <intervals08@xxxxxxxxxxxxxx>
Subject: Re: What does "infinty as number" mean?
Date: Mon, 02 Mar 2009 12:31:05 -0800
> Date: Mon, 2 Mar 2009 16:41:28 +0100
> From: Vincent Lefevre <vincent@xxxxxxxxxx>
> To: stds-1788 <stds-1788@xxxxxxxxxxxxxxxxx>
> Subject: Re: What does "infinty as number" mean?
>
> On 2009-03-02 01:37:06 -0800, Dan Zuras Intervals wrote:
> > lim inf 0/inf = -inf
> > lim sup 0/inf = +inf
> >
> > but this last could be +/-0 in some cases in a definition in
> > which strict control of the infinities & the signs of zero
> > are maintained. I believe this must be part of the price we
> > must pay for 'infinity as number'.
>
> I disagree with these last two. The result MUST be 0 in both cases.
> I don't see how you can obtain -inf or +inf.
>
> --
> Vincent Lefèvre <vincent@xxxxxxxxxx> - Web: <http://www.vinc17.org/>
You're right. I was wrong. That's what I get for writing
up an opinion in the wee hours of the morning. Thanks. - Dan