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Topic: Naive set theory
Replies: 4   Last Post: Apr 9, 2013 3:02 PM

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Alan Smaill

Posts: 912
Registered: 1/29/05
Re: Naive set theory
Posted: Apr 9, 2013 9:57 AM
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Zuhair <zaljohar@gmail.com> writes:

> What's the proof of the following in naive set theory?
> Not exist x. x is empty

In an inconsistent theory, anything is provable.

> Zuhair

Alan Smaill

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