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

  • To: mathgroup at smc.vnet.net
  • Subject: [mg82604] Re: (x|y) \[element] Integers in Reduce function
  • From: Bhuvanesh <lalu_bhatt at yahoo.com>
  • Date: Fri, 26 Oct 2007 05:16:14 -0400 (EDT)

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


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