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A. Pascal's user avatar
A. Pascal's user avatar
A. Pascal
  • Member for 14 years, 1 month
  • Last seen more than 10 years ago
  • Chile
21 votes
4 answers
12k views

Ample line bundles, sections, morphisms to projective space

14 votes
4 answers
3k views

Characterization of the Lie derivative

10 votes
3 answers
2k views

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

10 votes
3 answers
3k views

Embedding dimension=minimum dimension of a local embedding?

9 votes
1 answer
2k views

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

7 votes
3 answers
381 views

Equidistant hypersurfaces in symmetric space via exponentiation?

6 votes
0 answers
483 views

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

6 votes
2 answers
2k views

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

5 votes
1 answer
473 views

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

4 votes
1 answer
400 views

Fundamental domain for group generated by reflections in -2 curves

4 votes
1 answer
199 views

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

4 votes
3 answers
524 views

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

4 votes
0 answers
259 views

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

3 votes
1 answer
265 views

When are root hyperplanes locally finite?

3 votes
0 answers
82 views

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

2 votes
1 answer
895 views

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

2 votes
1 answer
509 views

Birational correspondences and codimension where not an isomorphism

2 votes
1 answer
275 views

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

2 votes
1 answer
986 views

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

2 votes
1 answer
336 views

Image of the Abel map for a hyperelliptic curve

2 votes
1 answer
330 views

Cohomology vanishing for formal completions of modules?

2 votes
1 answer
479 views

Simple normal crossings divisor with connected intersections

1 vote
2 answers
420 views

Finding representatives of PSL_2(Z) orbits

1 vote
1 answer
680 views

Birational properties of canonical bundle

1 vote
1 answer
886 views

Complement of lines and wedges of spheres