Re: Infinity vs DirectedInfinity[1]
- To: mathgroup at smc.vnet.net
- Subject: [mg70536] Re: Infinity vs DirectedInfinity[1]
- From: "Chris Chiasson" <chris at chiasson.name>
- Date: Thu, 19 Oct 2006 03:21:47 -0400 (EDT)
- References: <acbec1a40610162329m404af5d6h5d54098ec764d0ad@mail.gmail.com>
So, after talking further with Andrzej Kozlowski, I now think that Infinity is defined to be DirectedInfinity[1] (perhaps via Set, i.e. Infinity=DirectedInfinity[1] ) and that it is DirectedInfinity[1] that has a MakeBoxes (or equivalent) rule to display as Infinity in StandardForm and TraditionalForm (or actually, \[Infinity], if you are in the FrontEnd looking at an Output cell). Although, I am not sure Andrzej actually agrees with me :-] On 10/17/06, Chris Chiasson <chris at chiasson.name> wrote: > Infinity is a symbol, as far as I know. However, in FullForm it is > shown as the equivalent DirectedInfinity[1]. > > Is there some kind of MakeBoxes rule for FullForm that makes Infinity > show up that way? > > -- > http://chris.chiasson.name/ > -- http://chris.chiasson.name/