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MathGroup Archive 2004

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Re: Re: finite domains

  • To: mathgroup at smc.vnet.net
  • Subject: [mg52733] Re: [mg52691] Re: finite domains
  • From: Andrzej Kozlowski <akoz at mimuw.edu.pl>
  • Date: Sat, 11 Dec 2004 05:21:44 -0500 (EST)
  • References: <cp3t2v$9ai$1@smc.vnet.net> <200412100122.UAA18894@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

The issue of using Element does not arise unless you overload the built 
in definition yourself, since it only works (naturally) with the built 
in domains.

MerberQ works with any list but of course will not work with functions 
like Simplify etc that make use of Element.

Computers are not human ... sigh...

Andrzej Kozlowski
Chiba, Japan
http://www.akikoz.net/~andrzej/
http://www.mimuw.edu.pl/~akoz/



On 10 Dec 2004, at 10:22, Drago Ganic wrote:

> Hi group,
> Here is another question:
> Should we use Element for finite domains, or should we use **only** 
> MemberQ
> for them ??!
>
> Greetings from Croatia,
> Drago Ganic
>
>
>
> "János" <janos.lobb at yale.edu> wrote in message
> news:cp3t2v$9ai$1 at smc.vnet.net...
>> Hi,
>>
>> When I look the book I see just infinite built-in domains, like 
>> Integer
>> etc...  I am wondering if finite domains can be created and if all the
>> domain related functions would work on it.  As an example, I have
>> {North, West, South, East} in mind.
>>
>> Thanks ahead,
>> János
>> ----------------------------------------------
>> Trying to argue with a politician is like lifting up the head of a
>> corpse.
>> (S. Lem: His Master Voice)
>>
>
>
>


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