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mdeland's user avatar
mdeland's user avatar
mdeland
  • Member for 13 years, 1 month
  • Last seen more than 4 years ago
42 votes
Accepted

Possible formal smoothness mistake in EGA

42 votes

Why torsion is important in (co)homology ?

15 votes
Accepted

Discriminant and Different

15 votes

Italian school of algebraic geometry and rigorous proofs

10 votes

When are Hilbert schemes smooth?

10 votes

Relationship between Hilbert schemes and deformation spaces

8 votes
Accepted

functorial meaning of irreducibility of a moduli space

8 votes

Algebraic stacks from scratch

7 votes

Why is the Euler characteristic of powers of a line bundle a polynomial in the power?

7 votes

Positivity in stack geometry

6 votes

Is an algebraic space group always a scheme?

5 votes
Accepted

Why is the Euler characteristic of powers of a line bundle a polynomial in the power?

5 votes
Accepted

What are non-trivial examples of non-singular blow-ups of a non-singular variety?

5 votes
Accepted

When can one extend a flat family from a subscheme to the whole scheme?

5 votes
Accepted

Rees algebra for non-radical ideals

5 votes
Accepted

balanced curves in Calabi-Yau 3-folds

3 votes

"Every scheme as a sheaf" references?

3 votes
Accepted

Functoriality of Hironaka's resolution of singularities

2 votes

Stacks determined by their coarse moduli spaces

2 votes
Accepted

Dual Curves in Fancy Language

1 vote

Sections of a fibration in intersections of quadrics