User Harry

31 votes

1 answer

2k views

Do all curves have Néron models

asked Oct 22, 2012 at 19:38

14 votes

3 answers

1k views

Can we define homotopy groups using Tannakian categories

asked Mar 24, 2012 at 13:22

10 votes

1 answer

996 views

Does Nori's fundamental group scheme appear in Kim's work

asked Mar 18, 2012 at 17:41

8 votes

5 answers

2k views

The use of embedding a curve into its Jacobian

asked Mar 25, 2012 at 9:08

7 votes

2 answers

485 views

Jacobians defined over smaller fields

asked Oct 4, 2012 at 22:06

6 votes

2 answers

2k views

Q-factorial and rational singularities on surfaces

asked Mar 26, 2012 at 15:18

4 votes

2 answers

387 views

Defining isogenies over smaller fields

asked Oct 5, 2012 at 18:53

4 votes

0 answers

280 views

Does semi-stable reduction behave well with Weil restriction of scalars

asked Aug 5, 2012 at 14:11

4 votes

1 answer

593 views

A question about the Tannakian etale fundamental group of a curve

asked Apr 28, 2012 at 8:43

4 votes

1 answer

611 views

Does a curve over a number field have a finite etale cover of given degree

asked Oct 14, 2012 at 10:26

3 votes

1 answer

888 views

Schemes associated to vector spaces

asked May 12, 2012 at 10:29

3 votes

1 answer

474 views

Are abelian varieties degree two covers of some projective space

asked Aug 1, 2012 at 12:48

3 votes

1 answer

933 views

Construction of Kummer map for abelian variety

asked Mar 18, 2012 at 14:00

2 votes

1 answer

730 views

How do subgroups of fundamental groups relate to torsors

asked Mar 18, 2012 at 17:15

2 votes

1 answer

307 views

Constructing rational functions with ramification locus the divisor of some $n$-form

asked Mar 19, 2012 at 17:36

2 votes

0 answers

425 views

Are torsors over unipotent groups trivial

asked Mar 20, 2012 at 9:07

2 votes

1 answer

342 views

Pro-affine varieties over a local field

asked Apr 25, 2012 at 13:43

2 votes

0 answers

612 views

The cohomology of the relative dualizing sheaf of a relative curve

asked May 27, 2012 at 23:19

1 vote

0 answers

444 views

Why do twists of an algebraic group over k correspond to k-torsors over G

asked Mar 17, 2012 at 19:28

1 vote

1 answer

436 views

What is the reduction of this hyperelliptic curve

asked Oct 13, 2012 at 12:34

1 vote

1 answer

682 views

A question on Cebotarev's density theorem

asked Oct 18, 2012 at 22:09

0 votes

1 answer

293 views

Is any simple abelian variety covered by a non-simple abelian variety

asked Aug 1, 2012 at 13:39

0 votes

2 answers

328 views

Does the self-product of a $g$-dimensional abelian variety contain an abelian variety of dimension smaller than $g$ at some point

asked Aug 1, 2012 at 15:10

Stack Exchange Network

23 Questions

Do all curves have Néron models

Can we define homotopy groups using Tannakian categories

Does Nori's fundamental group scheme appear in Kim's work

The use of embedding a curve into its Jacobian

Jacobians defined over smaller fields

Q-factorial and rational singularities on surfaces

Defining isogenies over smaller fields

Does semi-stable reduction behave well with Weil restriction of scalars

A question about the Tannakian etale fundamental group of a curve

Does a curve over a number field have a finite etale cover of given degree

Schemes associated to vector spaces

Are abelian varieties degree two covers of some projective space

Construction of Kummer map for abelian variety

How do subgroups of fundamental groups relate to torsors

Constructing rational functions with ramification locus the divisor of some $n$-form

Are torsors over unipotent groups trivial

Pro-affine varieties over a local field

The cohomology of the relative dualizing sheaf of a relative curve

Why do twists of an algebraic group over k correspond to k-torsors over G

What is the reduction of this hyperelliptic curve

A question on Cebotarev's density theorem

Is any simple abelian variety covered by a non-simple abelian variety

Does the self-product of a $g$-dimensional abelian variety contain an abelian variety of dimension smaller than $g$ at some point