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Math Forum » Discussions » sci.math.* » sci.math

Topic: Countably Infinite Sets
Replies: 11   Last Post: Dec 28, 2012 9:08 PM

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Scott Berg

Posts: 2,031
Registered: 12/12/04
Re: Countably Infinite Sets
Posted: Dec 28, 2012 1:51 PM
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"netzweltler" <reinhard_fischer@arcor.de> wrote in message
news:22a702ac-b0b4-4c5e-b4f3-7d094499f431@r13g2000vbd.googlegroups.com...
> Does the set {{1}, {1,2}, {1,2,3}, ...} contain all natural numbers?

no, it would contain the set of all natural numbers.





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