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Ostap Chervak's user avatar
Ostap Chervak's user avatar
Ostap Chervak
  • Member for 13 years, 9 months
  • Last seen more than 5 years ago
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Interests: Ramsey theory, General Topology, Asymptotic Topology, Dimension Theory, Algebraic Topology, Commutative rings, Set Theory, Forcing, General Number Theory
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Top posts
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question
19
Estimate on radical of $2^n \pm 1$
Jan 15, 2013
answer
17
What are some reasonable-sounding statements that are independent of ZFC?
Mar 25, 2011
answer
12
What are the most elegant proofs that you have learned from MO?
Apr 15, 2011
answer
11
Countable subgroups of compact groups
Apr 24, 2011
question
8
Kronecker Approximation theorem and Fibonacci numbers
Mar 10, 2011
answer
7
Products of Baire spaces
May 4, 2011
answer
4
Old books still used
Dec 31, 2012
question
2
Infinite domain with finite number of prime ideals(elements)
Jun 14, 2012
answer
2
Why are finiteness conditions important (and how to recognize them)?
Apr 3, 2012
answer
1
closed meagre sets
Apr 30, 2012