Bruno Marchal wrote:
> ...
> A set is entirely defined by its elements. Put in another way, we will
> say that two sets are equal if they have the same elements.
> Exercise 6. Let S be the set {0, 1, 45} and let M be the set described
> by {45, 0, 1}. Is it true or false that S is equal to M?
> Exercise 7. Let S be the set {666} and M be the set {6, 6, 6}. Is is
> true or false that S is equal to M?
>
But there are no duplicates in sets; so {6,6,6} is either not a set
(instead it's a triple) or it's just strange notation for {6}. Right?
Brent
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Received on Tue Jun 02 2009 - 13:00:55 PDT