User Dror Speiser

29 votes

2 answers

4k views

What is the algebraic closure of the field with one element?

asked Nov 23, 2009 at 2:03

29 votes

1 answer

2k views

Is the Brauer group of a surface an elliptic curve?

asked Jun 14, 2011 at 22:46

27 votes

5 answers

3k views

Class number measuring the failure of unique factorization

asked Jan 6, 2010 at 17:05

26 votes

7 answers

6k views

When is a product of elliptic curves isogenous to the Jacobian of a hyperelliptic curve?

asked Aug 9, 2010 at 23:28

25 votes

1 answer

1k views

When does a modular form satisfy a differential equation with rational coefficients?

asked Mar 27, 2013 at 2:22

18 votes

1 answer

2k views

Galois representations attached to Maass form

asked Feb 29, 2012 at 11:27

17 votes

5 answers

3k views

Families of number fields of prime discriminant

asked Jan 4, 2010 at 21:33

16 votes

4 answers

1k views

Geometric meaning of fiber of modular parameterization over a point of an elliptic curve?

asked Aug 17, 2010 at 13:39

14 votes

2 answers

3k views

Why is there a weight 2 modular form congruent to any modular form

asked Jul 8, 2011 at 11:47

14 votes

2 answers

2k views

Irreducible polynomial over number field with roots in every completion?

asked Nov 29, 2009 at 0:33

12 votes

0 answers

747 views

What is the Shafarevich-Tate group of GL(2)?

asked Oct 26, 2010 at 17:33

12 votes

3 answers

1k views

Is the Gelfand-Graev character isomorphic to a cohomology group for some sheaf on a Deligne-Lusztig variety?

asked Nov 2, 2011 at 12:20

11 votes

2 answers

921 views

Density of monogenic number fields?

asked Apr 15, 2010 at 22:28

11 votes

1 answer

564 views

CM field to Torus to Abelian Variety?

asked Jul 8, 2010 at 23:03

10 votes

1 answer

2k views

Class number of non-maximal order in imaginary quadratic function field?

asked Jul 15, 2010 at 18:37

10 votes

3 answers

652 views

Computationally bounding a curve's genus from below?

asked Mar 30, 2010 at 21:11

10 votes

2 answers

1k views

Legitimacy of reducing mod p a complex multiplication action of an elliptic curve?

asked Dec 14, 2009 at 16:33

9 votes

3 answers

2k views

How do I calculate the discriminant of a galois closure and its other subfields?

asked Nov 24, 2009 at 10:24

9 votes

1 answer

447 views

Are affine groups over rings of integers finitely generated?

asked Feb 1, 2011 at 22:15

7 votes

0 answers

504 views

Constructing large rank elliptic curves by multiplying quadratic imaginaries by cubes so that all have same imaginary part

asked Sep 23, 2010 at 22:56

7 votes

2 answers

732 views

Explicit map for Scholz reflection principle

asked Oct 3, 2010 at 1:55

7 votes

0 answers

504 views

What is the right basis of solutions of the Picard-Fuchs equation of the Legendre family around 0?

asked Apr 9, 2019 at 14:24

6 votes

1 answer

337 views

Finite field analogue of representations in same packet have equal central character

asked Sep 7, 2011 at 15:39

6 votes

0 answers

163 views

What is the distribution of the $L^\infty$ norm of minimal polynomials of numbers in a number field?

asked Apr 8, 2010 at 22:53

6 votes

3 answers

729 views

When is an affine part of an elliptic curve isomorphic to an affine part of a norm equation?

asked Feb 11, 2011 at 16:13

6 votes

1 answer

362 views

Computing the dimensions of representations in a reducible induced representation

asked Jun 12, 2011 at 22:07

6 votes

1 answer

875 views

What should Spec Z[\sqrt{D}] x_{F_1} Spec \bar{F_1} be?

asked Nov 24, 2009 at 1:01

4 votes

2 answers

448 views

Can an abelian variety be represented as the cohomology of some other object?

asked Jan 25, 2010 at 19:46

4 votes

0 answers

243 views

Chow groups of arithmetic surfaces

asked Apr 23, 2010 at 21:52

4 votes

3 answers

1k views

Groups related to sum of squares function?

asked Jun 6, 2010 at 18:26

Stack Exchange Network

45 Questions

What is the algebraic closure of the field with one element?

Is the Brauer group of a surface an elliptic curve?

Class number measuring the failure of unique factorization

When is a product of elliptic curves isogenous to the Jacobian of a hyperelliptic curve?

When does a modular form satisfy a differential equation with rational coefficients?

Galois representations attached to Maass form

Families of number fields of prime discriminant

Geometric meaning of fiber of modular parameterization over a point of an elliptic curve?

Why is there a weight 2 modular form congruent to any modular form

Irreducible polynomial over number field with roots in every completion?

What is the Shafarevich-Tate group of GL(2)?

Is the Gelfand-Graev character isomorphic to a cohomology group for some sheaf on a Deligne-Lusztig variety?

Density of monogenic number fields?

CM field to Torus to Abelian Variety?

Class number of non-maximal order in imaginary quadratic function field?

Computationally bounding a curve's genus from below?

Legitimacy of reducing mod p a complex multiplication action of an elliptic curve?

How do I calculate the discriminant of a galois closure and its other subfields?

Are affine groups over rings of integers finitely generated?

Constructing large rank elliptic curves by multiplying quadratic imaginaries by cubes so that all have same imaginary part

Explicit map for Scholz reflection principle

What is the right basis of solutions of the Picard-Fuchs equation of the Legendre family around 0?

Finite field analogue of representations in same packet have equal central character

What is the distribution of the $L^\infty$ norm of minimal polynomials of numbers in a number field?

When is an affine part of an elliptic curve isomorphic to an affine part of a norm equation?

Computing the dimensions of representations in a reducible induced representation

What should Spec Z[\sqrt{D}] x_{F_1} Spec \bar{F_1} be?

Can an abelian variety be represented as the cohomology of some other object?

Chow groups of arithmetic surfaces

Groups related to sum of squares function?