User Angelo

6 votes

Accepted

scheme-theoretic description of abelian schemes

answered Apr 28, 2010 at 19:29

6 votes

Real representation of finite groups

answered Apr 30, 2010 at 3:47

6 votes

Is there an obvious way for showing singularities are quotient?

answered May 1, 2010 at 13:12

6 votes

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Is this formulation of the Singular Value Decomposition standard?

answered Oct 24, 2010 at 19:14

6 votes

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When do sheaves deform over a family?

answered Sep 23, 2010 at 7:38

6 votes

Reduced varieties with no regular points?

answered Oct 1, 2010 at 16:10

6 votes

Zariski sheaves lifted to etale topology

answered Nov 5, 2010 at 18:18

6 votes

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Universal homeomorphisms and the étale topology

answered Nov 24, 2010 at 22:21

6 votes

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Degree of image of a polynomial map

answered Apr 29, 2011 at 19:45

6 votes

Orbit spaces of finite groups acting on projective varieties

answered Jul 23, 2011 at 5:34

5 votes

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Principal bundles in the etale and Zariski topology and extensions of the structure group

answered Aug 3, 2011 at 3:54

5 votes

If X is the coarse moduli space of the algebraic stack M, is there a nice description of Hom(_,X)?

answered Jul 18, 2011 at 7:14

5 votes

Is the category of affine fppf groups closed under normal quotients?

answered Jun 6, 2011 at 19:30

5 votes

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Global sections for divisors on products of varieties

answered Feb 4, 2011 at 15:50

5 votes

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Compactifiable morphisms

answered Apr 24, 2010 at 13:23

5 votes

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What is the coordinate ring of symmetric product of affine plane?

answered May 14, 2010 at 14:30

5 votes

Graded or stacky Serre duality

answered Apr 2, 2010 at 6:26

5 votes

Representations of \pi_1, G-bundles, Classifying Spaces

answered Apr 8, 2010 at 20:46

5 votes

Noether-style isomorphism theorem for stacks?

answered Aug 2, 2010 at 12:34

5 votes

Deformations of hypersurfaces

answered Aug 21, 2010 at 4:53

5 votes

Hilbert scheme of points

answered Sep 1, 2010 at 11:24

5 votes

Vanishing of Self-Ext groups of vector bundles

answered Aug 13, 2010 at 4:51

5 votes

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When is a conjugacy class of matrices an embedded submanifold?

answered May 30, 2010 at 7:03

5 votes

Accepted

Picard functor is not linear

answered Jun 30, 2010 at 14:30

5 votes

Accepted

Checking locally whether a homomorphism is a localization

answered Jul 5, 2010 at 20:24

5 votes

Is the following a sufficient condition for flatness?

answered Jun 20, 2010 at 6:07

5 votes

Do Henselian extensions have left lifting property with respect to smooth morphisms?

answered Nov 5, 2019 at 14:42

5 votes

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What are the projective dimensions of big fraction fields?

answered Nov 21, 2019 at 21:11

5 votes

weierstrass points on hyperelliptic curves of genus 3

answered Jan 10, 2020 at 5:21

5 votes

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When are the Smooth Sections of a Bundle Generated as a Module (over Smooth Functions) by the Holomorohic Sections

answered Feb 10, 2013 at 6:30

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266 Answers

scheme-theoretic description of abelian schemes

Real representation of finite groups

Is there an obvious way for showing singularities are quotient?

Is this formulation of the Singular Value Decomposition standard?

When do sheaves deform over a family?

Reduced varieties with no regular points?

Zariski sheaves lifted to etale topology

Universal homeomorphisms and the étale topology

Degree of image of a polynomial map

Orbit spaces of finite groups acting on projective varieties

Principal bundles in the etale and Zariski topology and extensions of the structure group

If X is the coarse moduli space of the algebraic stack M, is there a nice description of Hom(_,X)?

Is the category of affine fppf groups closed under normal quotients?

Global sections for divisors on products of varieties

Compactifiable morphisms

What is the coordinate ring of symmetric product of affine plane?

Graded or stacky Serre duality

Representations of \pi_1, G-bundles, Classifying Spaces

Noether-style isomorphism theorem for stacks?

Deformations of hypersurfaces

Hilbert scheme of points

Vanishing of Self-Ext groups of vector bundles

When is a conjugacy class of matrices an embedded submanifold?

Picard functor is not linear

Checking locally whether a homomorphism is a localization

Is the following a sufficient condition for flatness?

Do Henselian extensions have left lifting property with respect to smooth morphisms?

What are the projective dimensions of big fraction fields?

weierstrass points on hyperelliptic curves of genus 3

When are the Smooth Sections of a Bundle Generated as a Module (over Smooth Functions) by the Holomorohic Sections