Re: (x|y) \[element] Integers in Reduce function
- To: mathgroup at smc.vnet.net
- Subject: [mg82646] Re: (x|y) \[element] Integers in Reduce function
- From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
- Date: Sat, 27 Oct 2007 05:59:56 -0400 (EDT)
- Organization: The Open University, Milton Keynes, UK
- References: <ffsbo2$mb0$1@smc.vnet.net>
Bhuvanesh wrote:
> Jean-Marc Gulliet wrote:
>
>> The correct answer is (b).
>
> Actually, the answer is (a): Element[x|y,domain] means that both x and y are elements of the specified domain.
>
> In[1]:= Reduce[Element[x|y, Integers]]
>
> Out[1]= x \[Element] Integers && y \[Element] Integers
>
> In[2]:= Element[Sqrt[2]|E, Algebraics]
>
> Out[2]= False
>
> In[3]:= Element[#, Algebraics]& /@ {Sqrt[2], E}
>
> Out[3]= {True, False}
>
> Bhuvanesh,
> Wolfram Research
>
Thank you for the clarification (I realized that I was really confused).
Best regards,
--
Jean-Marc