Anton Geraschenko's user avatar
Anton Geraschenko's user avatar
Anton Geraschenko's user avatar
Anton Geraschenko
  • Member for 14 years, 6 months
  • Last seen this week
110 votes

Most harmful heuristic?

92 votes
Accepted

Sheaf cohomology and injective resolutions

64 votes
Accepted

Taking lecture notes in lectures

63 votes
Accepted

"Points" in algebraic geometry: Why shift from m-Spec to Spec?

61 votes

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

50 votes

Best algebraic geometry textbook? (other than Hartshorne)

46 votes

Math puzzles for dinner

44 votes

Learning LaTeX properly

37 votes
Accepted

Colimits of schemes

35 votes

What do epimorphisms of (commutative) rings look like?

34 votes

Examples of great mathematical writing

33 votes

Alternatives to pi day

32 votes

Interesting applications of the pigeonhole principle

30 votes
Accepted

Is there an example of a formally smooth morphism which is not smooth?

30 votes

What is the universal property of associated graded?

28 votes
Accepted

Different interpretations of moduli stacks

27 votes
Accepted

What is meant by smooth orbifold?

25 votes

When are the units of R[x] exactly the units of R?

24 votes

Real-world applications of mathematics, by arxiv subject area?

23 votes
Accepted

Are curves with `fractional points' uniquely determined by their residual gerbes?

23 votes

Is it possible to capture a sphere in a knot?

22 votes
Accepted

Clean Proofs of Properties of Projective Space

21 votes
Accepted

Finite, Étale Morphism Of Varieties

21 votes

Maximal ideals in the ring of continuous real-valued functions on ℝ

20 votes

When is an algebraic space a scheme?

20 votes

Most helpful math resources on the web

19 votes

Maps to projective space determined by a line bundle

18 votes
Accepted

Is there an infinity × infinity lemma for abelian categories?

17 votes

Is every finite group a group of "symmetries"?

17 votes
Accepted

Can a singular Deligne-Mumford stack have a smooth coarse space?