Give an example of a compact countable infinite subset of $\mathbb{R}$. I'm having a difficult time, because I know that closed intervals $[a,b]$ are compact and infinite but are uncountable. Any help would be appreciated. Thanks!
Give an example of a compact countable infinite subset of $\mathbb{R}$
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real-analysis
general-topology
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0@Alon: I know of partial results, but not a full answer. I think it is an interesting question. – 2011-05-12
1 Answers
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