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Re: Is {{}} a valid construct?

From: Bob Badour <bbadour_at_pei.sympatico.ca>
Date: Tue, 06 Feb 2007 12:18:14 GMT
Message-ID: <am_xh.3101$R71.47551@ursa-nb00s0.nbnet.nb.ca> 





Marshall wrote:


> On Feb 5, 9:02 pm, "Neo" <neo55..._at_hotmail.com> wrote:

> 


>>With invalid elements ( {} ), flip a coin as to which is correct for
>>the last one.




> 

> Nope.

> 

> A necessary precondition for getting unconfused

> is figuring out the difference between the empty set

> and the set containing the empty set.




Or the ordered singlet containing the empty...
Received on Tue Feb 06 2007 - 06:18:14 CST












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