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seen Jun 6 '13 at 21:53

Jan
28
awarded  Popular Question
Dec
16
awarded  Nice Question
Dec
12
awarded  Nice Question
Nov
26
awarded  Necromancer
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18
awarded  Popular Question
Aug
3
awarded  Yearling
Jun
25
awarded  Revival
Feb
27
awarded  Nice Question
Feb
11
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Nov
14
comment What is the difference between a zeta function and an L-function?
Oh, thanks for the edit. From what I understand, L-functions are from representations (of the Galois group or so) and zeta functions are ... err, I don't know where they come from, but when they appear they have their own flavor.
Nov
14
comment What is the difference between a zeta function and an L-function?
I don't understand the 2nd sentence of the 3rd paragraph.
Nov
12
awarded  Civic Duty
Nov
9
comment Some bounded theorem of algebraic stack of coherent sheaves
See FGA Explained, or Mumford's book on curves on algebraic surfaces. I think you can obtain a p only depend on the hilbert polynomial.
Nov
5
comment Do complete non-projective varieties arise “in nature”?
@Piotr he is talking about small resolutions, not blow-ups, which may go out of the algebraic category, if I understand it right.
Nov
3
comment Why are derived categories natural places to do deformation theory?
And the cotangent complex is not constructed as an object in the derived category of quasi-coherent sheaves, it is an object in the derived category of O_X modules whose cohomologies are quasi-coherent. Sorry for being picky.
Nov
3
comment Why are derived categories natural places to do deformation theory?
A typo in the triangle of cotangent complex...
Oct
25
comment Degeneration of varieties to simple normal crossings
A good reference on this direction can be find in section 5 of math.berkeley.edu/~molsson/HofM.pdf
Oct
14
asked What's the relation between henselianization and completion?
Oct
12
comment Is there a “geometric” intuition underlying the notion of normal varieties?
See a explanation here: mathoverflow.net/questions/45347/…
Oct
10
awarded  Nice Question