Mattia Talpo's user avatar
Mattia Talpo's user avatar
Mattia Talpo's user avatar
Mattia Talpo
  • Member for 13 years, 11 months
  • Last seen this week
8 votes

How do I describe the GL_n torsor attached to a smooth morphism of relative dimension n?

6 votes
Accepted

Deformation of Line bundles over dual numbers

6 votes

Canonical (tautological) section of a family of sheaves

5 votes
Accepted

Information and intuition packed in the Chern character for coherent sheaves

4 votes

Definition of étale (etc) for non-representable morphisms of algebraic stacks?

4 votes

A log structure on the moduli space of curves

4 votes

Equivalence of natural transformations

4 votes

Quasi-coherent of finite presentation: Redundant?

3 votes

Intuition for the satellite of a functor

3 votes

universal categorical quotient

3 votes
Accepted

Does Hom(X,Spec R) = Hom(R, O(X)) hold for algebraic stacks?

3 votes
Accepted

Regularity of a tensor product

3 votes
Accepted

Question about canonical DM stacks

2 votes
Accepted

amalgamated sum of monoids

2 votes

Generic points of the Quot scheme

2 votes

algebraic local charts

2 votes

Immerse an affine schemes into $A^n_S$

1 vote

Twisted forms and $\check{H}^1$

1 vote
Accepted

Is the dual of the dual curve the original curve?

1 vote
Accepted

On an example by Romagny about fixed point stack not commuting with coarse moduli space

1 vote

Faces of polyhedral cones and open immersions of affine toric schemes

1 vote

Can we prove that a normal surface of an extreme point of a convex subset of a simplex is a separating hyperplane?

0 votes

Can all induced maps be described categorically.?. (or at least as generally as possible)