Re: make 0*Infinity = 0
- To: mathgroup at smc.vnet.net
- Subject: [mg47280] Re: make 0*Infinity = 0
- From: "Peter Pein" <no at spam.no>
- Date: Fri, 2 Apr 2004 03:30:27 -0500 (EST)
- References: <c4ggtp$3ng$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Check[0*Infinity, 0, Infinity::indet]
don't use Off[Infinity::indet] with this, or it doesn't work.
--
Peter Pein, Berlin
StringReplace["petsie at arcand.de",
Rule@@(ToLowerCase@ToString@Head@#&)/@{William&&S,2b||!2b}]
"Daniel Reeves" <dreeves at umich.edu> schrieb im Newsbeitrag
news:c4ggtp$3ng$1 at smc.vnet.net...
> I'm really stumped on how to make 0*Infinity evaluate to 0.
> I've tried all the obvious things, like
> Unprotect[Infinity];
> Infinity*0 = 0;
> along with all the variations I can think of using UpSet and
> DirectedInfinity[_], etc.
> Alas, 0*Infinity always comes back with Indeterminate.
>
> Thanks!
> Daniel
>
> --
> http://ai.eecs.umich.edu/people/dreeves - - google://"Daniel Reeves"
>
> Optimist: The glass is half full.
> Pessimist: The glass is half empty.
> Engineer: The glass is too big.
>
>
Check[0*Infinity, 0, Infinity::indet]
don't use Off[Infinity::indet] with this, or it doesn't work.
--
Peter Pein, Berlin
StringReplace["petsie at arcand.de",
Rule@@(ToLowerCase@ToString@Head@#&)/@{William&&S,2b||!2b}]