Releated to POSETS (Partially ordered sets).
From: neville (ndesk1900_at_hotmail.com)
Date: 12/06/04
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Date: 6 Dec 2004 13:01:48 -0800
A is a set of all real numbers. B is a set of real numbers where 1 < x
< 2. Now, could you tell me the lower bound and the upper bound in this
case?
Also if set B is a set of real numbers where 1 <= x <= 2 then could you
tell me the lower bound and the upper bound in this case too?
According to me in the first question we should not be able to define
any lower and upper bound.
In the second one our lower bound should be (1,-infinity) and upper
bound should be (2,infinity).
Could someone help me and tell me a definate answer with reasons?
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