greatest lower bound Ric Woo ricwoo ricwoo@hotmail.com

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Topic: greatest lower bound
Conf: Chapter A1, Sets and Mappings, Msg: 10563
From: Ric Woo (ricwoo@hotmail.com)
Date: 3/12/2002 04:33 AM

greatest lower bound Ric Woo ricwoo ricwoo@hotmail.com I cannot understand the reasoning behind the last paragraph of P.425:

If a
Any point in (a-e, a+e) do not belong to S as said. But that they do not belong to S does not imply they are less than all the points in S. In particular, even though ax and a+0.5e is in (a-e, a+e). So, I don't understand.

Any one can tell? Thanks.