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Anton Geraschenko

Menlo Park, CA, United States

http://stacky.net

You can get in touch with me at [email protected].

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Top Questions
285 votes

What are some reasonable-sounding statements that are independent of ZFC?

independence-results examples set-theory lo.logic big-list asked Oct 22, 2009 at 19:26
mathoverflow.net

237 votes

Is there an elementary proof that $\sum \limits_{k=1}^n \frac1k$ is never an integer?

sequences-and-series number-theory harmonic-numbers asked Aug 18, 2010 at 22:49
math.stackexchange.com

192 votes

Examples of great mathematical writing

mathematical-writing soft-question big-list asked Oct 12, 2009 at 17:12
mathoverflow.net

115 votes

What do epimorphisms of (commutative) rings look like?

ac.commutative-algebra asked Oct 5, 2009 at 5:33
mathoverflow.net

62 votes

Can a vector space over an infinite field be a finite union of proper subspaces?

linear-algebra asked Sep 29, 2009 at 14:22
mathoverflow.net

60 votes

Is there a measure zero set which isn't meagre?

gn.general-topology measure-theory examples asked Oct 25, 2010 at 5:13
mathoverflow.net

52 votes

Interesting applications of the pigeonhole principle

big-list asked Nov 5, 2009 at 18:13
mathoverflow.net

45 votes

RSS feed for favorite questions

feature-request rss favorites asked Oct 8, 2009 at 20:20
meta.stackexchange.com

39 votes

Is every finite-dimensional Lie algebra the Lie algebra of an algebraic group?

lie-algebras lie-groups algebraic-groups asked Oct 5, 2009 at 19:48
mathoverflow.net

39 votes

Does a scheme have a "separification"?

ag.algebraic-geometry adjoint-functors asked Oct 13, 2009 at 4:16
mathoverflow.net

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Top Answers
139
Do good math jokes exist?
mathoverflow.net

133
Moderator Election! Vote here.
mathoverflow.net

129
Moderator Election! Vote here.
mathoverflow.net

110
Most harmful heuristic?
mathoverflow.net

100
Moderator Election! Vote here.
mathoverflow.net

92
Sheaf cohomology and injective resolutions
mathoverflow.net

65
Taking lecture notes in lectures
mathoverflow.net

63
"Points" in algebraic geometry: Why shift from m-Spec to Spec?
mathoverflow.net

61
How to respond to "I was never much good at maths at school."
mathoverflow.net

60
Moderator Election! Vote here.
mathoverflow.net

54
Moderator Election! Vote here.
mathoverflow.net

50
Best algebraic geometry textbook? (other than Hartshorne)
mathoverflow.net

46
Moderator Election! Vote here.
mathoverflow.net

46
Math puzzles for dinner
mathoverflow.net

46
Why doesn't Hom commute with taking stalks?
math.stackexchange.com

44
Learning LaTeX properly
mathoverflow.net

37
Colimits of schemes
mathoverflow.net

35
What do epimorphisms of (commutative) rings look like?
mathoverflow.net

33
Examples of great mathematical writing
mathoverflow.net

33
Alternatives to pi day
mathoverflow.net

32
Interesting applications of the pigeonhole principle
mathoverflow.net

30
What is the universal property of associated graded?
mathoverflow.net

28
Different interpretations of moduli stacks
mathoverflow.net

28
Is there an example of a formally smooth morphism which is not smooth?
mathoverflow.net

27
What is meant by smooth orbifold?
mathoverflow.net

26
Short Exact Sequences & Rank Nullity
math.stackexchange.com

25
How do I typeset mathematics on mathoverflow.net?
mathoverflow.net

25
Area51 / SE 2.0 site-specific script support (such as LaTeX) in beta-phase
meta.stackexchange.com

25
When are the units of R[x] exactly the units of R?
mathoverflow.net

23
Is it possible to capture a sphere in a knot?
mathoverflow.net

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