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dorebell
  • Member for 9 years, 7 months
  • Last seen more than a month ago
  • Palo Alto, CA, United States
28 votes
1 answer
2k views

Is there a "Langlands philosophy" reason for the fact that the L-function of the Jacobi theta function is (almost) the Riemann zeta function?

24 votes
1 answer
2k views

Why are Lagrangian submanifolds called Lagrangian?

12 votes
3 answers
1k views

Why do we need a transitive model in forcing arguments?

9 votes
2 answers
398 views

Topological Derivation of Leray Spectral Sequence

9 votes
1 answer
643 views

What is the precise relationship between forcing on a poset and the topos of double-negation sheaves on this poset?

7 votes
1 answer
1k views

Can we define exterior derivatives using pushforwards and connections?

7 votes
1 answer
751 views

Does complex multiplication for higher dimensional abelian varieties give some generalization of class field theory?

6 votes
1 answer
2k views

Algebraic vs. homological equivalence for curves on a smooth complex projective surface

5 votes
1 answer
2k views

When do surjective morphisms induce injective maps on global sections of coherent sheaves?

5 votes
0 answers
398 views

Can the transcendence degree differ from the Krull dimension for the pluricanonical ring of a variety?

5 votes
1 answer
748 views

An integral domain of dimension one with a non-trivial infinite intersection of prime ideals

5 votes
1 answer
440 views

General existence theorem for cup products

5 votes
1 answer
459 views

What is the relationship between the $\ell$-adic cohomology of a DM stack and that of its coarse moduli space?

5 votes
2 answers
1k views

Can a non-trivial effective divisor on a (not necessarily smooth) variety be numerically trivial?

4 votes
0 answers
533 views

"Elementary" Proof that the divisor class group of varieties over finite fields is finite

4 votes
1 answer
566 views

Calculating Homology of the Boundary of a Handlebody

3 votes
0 answers
223 views

Does the link of a hypersurface singularity determine its analytic type?

3 votes
1 answer
475 views

When is the gradient of a Hamiltonian function a Liouville vector field?

3 votes
1 answer
181 views

Reference request - existence of formal solutions for integrable connections

2 votes
1 answer
153 views

Why is the set of parabolic reductions of a G-torsor E bijective to the set of parabolic subgroups of Aut(E)?

2 votes
1 answer
432 views

Krull dimension of completions in non-noetherian setting (especially completed perfections)

2 votes
0 answers
260 views

Relationship between coherent toposes/coherent logic and coherent sheaves

1 vote
1 answer
868 views

Torsion in the (co-)homology of a smooth projective variety - what is known in general?

1 vote
0 answers
205 views

A (second-order) axiomatic characterization of the integers which rules out surreal/hyperreal versions

1 vote
1 answer
1k views

Example of an integral scheme which is geometrically connected but not geometrically irreducible