User A. Pascal

21 votes

4 answers

12k views

Ample line bundles, sections, morphisms to projective space

asked May 22, 2010 at 21:18

14 votes

4 answers

3k views

Characterization of the Lie derivative

asked Mar 15, 2012 at 14:27

10 votes

3 answers

2k views

Homotopy type of the plane minus a sequence with no limit points

asked Feb 13, 2011 at 16:03

10 votes

3 answers

3k views

Embedding dimension=minimum dimension of a local embedding?

asked May 18, 2012 at 7:57

9 votes

1 answer

2k views

From function field to curve: non-algebraically closed ground field and functor of points

asked Jul 20, 2010 at 20:35

7 votes

3 answers

381 views

Equidistant hypersurfaces in symmetric space via exponentiation?

asked Jul 20, 2013 at 9:47

6 votes

0 answers

477 views

Why is algebraic de Rham cohomology via completion independent of embedding?

asked Dec 5, 2012 at 10:23

6 votes

2 answers

2k views

When does a rational function have infinitely many integer values for integer inputs?

asked Sep 7, 2010 at 12:24

5 votes

1 answer

469 views

How to compute $\mathcal{Ext}^{i}_{X}(\mathcal{O}_{Y_{1}},\mathcal{O}_{Y_{2}})$?

asked Feb 27, 2012 at 17:26

4 votes

1 answer

391 views

Fundamental domain for group generated by reflections in -2 curves

asked Aug 8, 2011 at 10:13

4 votes

1 answer

198 views

When do reflection groups act discretely on quadrics in indefinite/semi-Riemannian situation?

asked Aug 16, 2011 at 15:07

4 votes

3 answers

519 views

Obstructions to being a hyperplane section or a fibre of a Lefschetz pencil

asked Nov 4, 2011 at 9:35

4 votes

0 answers

258 views

Construction of mirror quintic family over $\mathbb{A}^{1} \setminus \{0,1\}$

asked Dec 23, 2011 at 14:18

3 votes

1 answer

263 views

When are root hyperplanes locally finite?

asked Aug 7, 2011 at 15:54

3 votes

0 answers

82 views

When can we discard higher order terms in a set of ideal generators?

asked May 16, 2012 at 9:38

2 votes

1 answer

884 views

Orthogonal group of the lattice $I_{p,q}$?

asked Aug 17, 2011 at 18:31

2 votes

1 answer

495 views

Birational correspondences and codimension where not an isomorphism

asked May 27, 2010 at 23:41

2 votes

1 answer

272 views

Cohomology of structure sheaf on surfaces of general type with $p_g=0$

asked May 18, 2011 at 7:53

2 votes

1 answer

975 views

Center of the braid group and outer automorphisms of the free group

asked Jun 9, 2011 at 21:34

2 votes

1 answer

328 views

Image of the Abel map for a hyperelliptic curve

asked Oct 25, 2010 at 13:57

2 votes

1 answer

325 views

Cohomology vanishing for formal completions of modules?

asked Jul 31, 2012 at 22:58

2 votes

1 answer

457 views

Simple normal crossings divisor with connected intersections

asked Oct 17, 2012 at 11:38

1 vote

2 answers

420 views

Finding representatives of PSL_2(Z) orbits

asked Jan 22, 2011 at 15:30

1 vote

1 answer

662 views

Birational properties of canonical bundle

asked May 28, 2010 at 1:06

1 vote

1 answer

861 views

Complement of lines and wedges of spheres

asked Oct 8, 2010 at 16:57

Stack Exchange Network

25 Questions

Ample line bundles, sections, morphisms to projective space

Characterization of the Lie derivative

Homotopy type of the plane minus a sequence with no limit points

Embedding dimension=minimum dimension of a local embedding?

From function field to curve: non-algebraically closed ground field and functor of points

Equidistant hypersurfaces in symmetric space via exponentiation?

Why is algebraic de Rham cohomology via completion independent of embedding?

When does a rational function have infinitely many integer values for integer inputs?

How to compute $\mathcal{Ext}^{i}_{X}(\mathcal{O}_{Y_{1}},\mathcal{O}_{Y_{2}})$?

Fundamental domain for group generated by reflections in -2 curves

When do reflection groups act discretely on quadrics in indefinite/semi-Riemannian situation?

Obstructions to being a hyperplane section or a fibre of a Lefschetz pencil

Construction of mirror quintic family over $\mathbb{A}^{1} \setminus \{0,1\}$

When are root hyperplanes locally finite?

When can we discard higher order terms in a set of ideal generators?

Orthogonal group of the lattice $I_{p,q}$?

Birational correspondences and codimension where not an isomorphism

Cohomology of structure sheaf on surfaces of general type with $p_g=0$

Center of the braid group and outer automorphisms of the free group

Image of the Abel map for a hyperelliptic curve

Cohomology vanishing for formal completions of modules?

Simple normal crossings divisor with connected intersections

Finding representatives of PSL_2(Z) orbits

Birational properties of canonical bundle

Complement of lines and wedges of spheres