Re: (x|y) \[element] Integers in Reduce function

• To: mathgroup at smc.vnet.net
• Subject: [mg82630] Re: (x|y) \[element] Integers in Reduce function
• From: Steven Siew <siewsk at bp.com>
• Date: Fri, 26 Oct 2007 05:29:37 -0400 (EDT)
• References: <ffn0le\$5sp\$1@smc.vnet.net>

```Thank you to everyone who has so kindly responded to my question.

I just want to let you know that I really appreciate your efforts and
that I am now just a little bit more knowledgeable about the
mathematica programming language.

Steven Siew

On Oct 24, 6:44 pm, Steven Siew <sie... at bp.com> wrote:
> Consider the following
>
> Reduce[x^2 - 2 y^2 == 1 && x>= 0 && y>=0 && (x|y) \[element] Integers,
> {x,y} ]
>
> What does " (x|y) \[element] Integers "   mean?
>
> Does it mean:
>
> (a) x is an Integer  AND  y is an Integer
>
> (b) x is an Integer  OR  y is an Integer
>
> Thank you

```

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