User Niels

24 votes

The algebraic version of Riemann-Hilbert correspondence

answered May 21, 2011 at 12:22

18 votes

Accepted

What are parabolic bundles good for?

answered Mar 8, 2016 at 8:44

18 votes

Phenomena of gerbes

answered Mar 6, 2017 at 9:12

17 votes

Accepted

Why does a group action on a scheme induce a group action on cohomology?

answered Nov 1, 2011 at 10:51

15 votes

Accepted

Anabelian geometry study materials?

answered Oct 5, 2012 at 7:45

11 votes

Accepted

Does Nori's fundamental group scheme appear in Kim's work

answered Mar 18, 2012 at 21:48

10 votes

relations between log schemes and toric varieties

answered Feb 16, 2013 at 17:42

9 votes

Accepted

stackification commutes with finite limits?

answered Nov 12, 2012 at 20:21

9 votes

Accepted

Exact sequences of groups and Tannakian formalism

answered Apr 18, 2015 at 8:00

9 votes

Accepted

Unipotent vector bundles

answered Dec 3, 2011 at 10:48

9 votes

Accepted

On a quasi-separated assumption in a lemma for the homotopy exact sequence of the etale fundamental group

answered Jun 27, 2020 at 12:35

8 votes

Accepted

Galois categories for topological spaces?

answered Sep 10, 2018 at 8:16

8 votes

Grothendieck's Galois theory without finiteness hypotheses

answered Jul 19, 2011 at 16:04

8 votes

Is there a ``path'' between any two fiber functors over the same field in Tannakian formalism?

answered Aug 1, 2011 at 7:40

8 votes

Accepted

Are all anabelian Galois actions faithful?

answered Jan 27, 2013 at 9:29

7 votes

Accepted

Quotient of a smooth curve by a finite group and differentials

answered Dec 24, 2015 at 10:48

7 votes

Hitchin fibration and Springer resolution

answered Aug 24, 2017 at 11:46

6 votes

Accepted

Equivariant Riemann-Hurwitz

answered Jun 18, 2017 at 20:54

6 votes

Accepted

automorphism of fibre functors

answered Oct 21, 2012 at 19:42

6 votes

When quotient stacks (for nonsmooth group) are algebraic and related questions

answered Nov 3, 2020 at 18:11

6 votes

Do equivariant morphisms induce representable maps of quotient stacks?

answered Apr 5, 2016 at 19:29

6 votes

Accepted

Effect of tensor product on euler characteristic of line bundles

answered Jan 19, 2011 at 9:44

5 votes

Proofs of Mordell-Weil theorem

answered Aug 7, 2011 at 19:38

5 votes

Accepted

algebraic proof of Atiyah-Bott fixed point formula?

answered Nov 15, 2011 at 8:18

5 votes

The use of embedding a curve into its Jacobian

answered Mar 25, 2012 at 11:56

5 votes

Reference for Manin's idea on algebraic geometry over the symmetric monoidal model category of Motives

answered Apr 12, 2016 at 7:18

5 votes

Non-Abelian Hodge theory

answered Jul 27, 2021 at 9:22

5 votes

Are principal bundles isotrivial?

answered Jul 12, 2016 at 13:04

5 votes

O. Leroy's thesis on fundamental groupoids

answered Apr 28, 2020 at 6:56

5 votes

Pullback of a connection

answered Nov 3, 2020 at 17:56

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60 Answers

The algebraic version of Riemann-Hilbert correspondence

What are parabolic bundles good for?

Phenomena of gerbes

Why does a group action on a scheme induce a group action on cohomology?

Anabelian geometry study materials?

Does Nori's fundamental group scheme appear in Kim's work

relations between log schemes and toric varieties

stackification commutes with finite limits?

Exact sequences of groups and Tannakian formalism

Unipotent vector bundles

On a quasi-separated assumption in a lemma for the homotopy exact sequence of the etale fundamental group

Galois categories for topological spaces?

Grothendieck's Galois theory without finiteness hypotheses

Is there a ``path'' between any two fiber functors over the same field in Tannakian formalism?

Are all anabelian Galois actions faithful?

Quotient of a smooth curve by a finite group and differentials

Hitchin fibration and Springer resolution

Equivariant Riemann-Hurwitz

automorphism of fibre functors

When quotient stacks (for nonsmooth group) are algebraic and related questions

Do equivariant morphisms induce representable maps of quotient stacks?

Effect of tensor product on euler characteristic of line bundles

Proofs of Mordell-Weil theorem

algebraic proof of Atiyah-Bott fixed point formula?

The use of embedding a curve into its Jacobian

Reference for Manin's idea on algebraic geometry over the symmetric monoidal model category of Motives

Non-Abelian Hodge theory

Are principal bundles isotrivial?

O. Leroy's thesis on fundamental groupoids

Pullback of a connection