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Re: Is {{}} a valid construct?

From: Jan Burse <janburse_at_fastmail.fm>
Date: Fri, 02 Feb 2007 18:25:45 +0100
Message-ID: <45C37419.7050903@fastmail.fm>


Neo wrote:
> Can an empty set contain an empty set? Is it valid according to set
> theory? If so, what does it correlate to in the real world? (when last
> explained to me, I was left holding two empty bags of potatoes but no
> clear understanding :)
>

If a set contains an element, bit it the empty set or not, its not the empty set.

So put your one empty bag of potatoes into your other empty bag of potatoes. And wush your second bag is not empty anymore. You see, it contains the first empty bag.

Bye Received on Fri Feb 02 2007 - 11:25:45 CST

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