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Answers
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10
What are the most elegant proofs that you have learned from MO?
8
Countable subgroups of compact groups
4
What are some reasonable-sounding statements that are independent of ZFC?
3
Old books still used
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Products of Baire spaces
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Why are finiteness conditions important (and how to recognize them)?
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Linear Algebra - Find an N-Dimensional Vector Orthogonal to A Given Vector
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closed meagre sets