User Jef

12 votes

1 answer

421 views

Fixed point scheme of finite group Cohen-Macaulay?

asked Sep 2, 2020 at 14:11

10 votes

0 answers

235 views

If $H$ is a quotient of $G$, does there exist an $H$-extension of $\mathbb{Q}$ not contained in a $G$-extension?

asked Jun 22, 2023 at 15:44

7 votes

1 answer

334 views

Extending $G$-torsors on open subsets of affine space

asked Jul 2, 2021 at 9:09

5 votes

0 answers

173 views

Unirationality of universal Jacobian over special strata of moduli space of pointed genus 3 curves

asked Jan 2, 2020 at 11:59

5 votes

1 answer

299 views

First cohomology of tangent sheaf of rational curve

asked Nov 22, 2021 at 17:03

5 votes

1 answer

312 views

Conductor at 2 of abelian surfaces with real multiplication

asked Jan 29, 2023 at 18:09

4 votes

0 answers

117 views

Projective reduction of image of power series is algebraic?

asked Feb 27 at 15:38

4 votes

0 answers

135 views

Specialization map Chow groups preserves algebraic equivalence

asked May 1 at 11:04

3 votes

0 answers

152 views

Locus where a family of cycles is rationally trivial is countable union of closed subvarieties?

asked Jan 24 at 12:13

3 votes

1 answer

283 views

Rank 3 Lagrangian vector bundles on an elliptic curve

asked Mar 26, 2020 at 12:47

3 votes

1 answer

69 views

Action of Coxeter element on mod $2$ root lattice is semisimple

asked Oct 22, 2021 at 9:57

2 votes

2 answers

189 views

Compute corestriction map on group cohomology in Magma

asked Nov 6 at 15:43

1 vote

0 answers

137 views

Locus where a family of cycles is rationally trivial is closed?

asked Dec 1, 2023 at 10:43

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13 Questions

Fixed point scheme of finite group Cohen-Macaulay?

If $H$ is a quotient of $G$, does there exist an $H$-extension of $\mathbb{Q}$ not contained in a $G$-extension?

Extending $G$-torsors on open subsets of affine space

Unirationality of universal Jacobian over special strata of moduli space of pointed genus 3 curves

First cohomology of tangent sheaf of rational curve

Conductor at 2 of abelian surfaces with real multiplication

Projective reduction of image of power series is algebraic?

Specialization map Chow groups preserves algebraic equivalence

Locus where a family of cycles is rationally trivial is countable union of closed subvarieties?

Rank 3 Lagrangian vector bundles on an elliptic curve

Action of Coxeter element on mod $2$ root lattice is semisimple

Compute corestriction map on group cohomology in Magma

Locus where a family of cycles is rationally trivial is closed?