User Sándor Kovács

6 votes

Accepted

Maybe a folklore natural map between reflexive pullbacks

answered Mar 28 at 20:38

3 votes

Why is this polynomial factorizable?

answered Mar 18 at 7:22

3 votes

Question about surface singularities

answered Mar 11 at 7:08

2 votes

Locus where morphism has positive-dimensional fibers

answered Feb 19 at 20:13

2 votes

Can a non-zero non-prime ideal become prime in a smaller ring?

answered Jun 15, 2023 at 17:30

0 votes

Accepted

Self-intersection of exceptional divisor from blowing up a subscheme

answered Jun 8, 2023 at 20:21

4 votes

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Inclusion of (pulling back of) dualizing sheaves under normalization

answered Jun 8, 2023 at 6:09

1 vote

Canonical bundle of projections of Veronese Varieties

answered Feb 15, 2023 at 4:24

1 vote

Accepted

How to show that the intersection of two certain affine varieties is reduced?

answered Feb 8, 2023 at 6:47

2 votes

Torsion of modules

answered Jan 6, 2023 at 5:50

1 vote

Induced resolution of singularities

answered Jan 5, 2023 at 20:04

3 votes

Accepted

Two morphisms possess the same Viehweg's variation

answered Oct 7, 2022 at 2:09

2 votes

Gorenstein varieties: why the two definitions are equivalent?

answered Sep 21, 2022 at 4:07

1 vote

Is normality really needed for the Cox ring of a $ \mathbb{Q} $-factorial variety to be well defined or is regular in codimension one enough?

answered Aug 17, 2022 at 18:12

1 vote

preserving quasi isomorphisms

answered Nov 16, 2021 at 20:21

1 vote

Accepted

Equivalence of sequences of blowups of $\mathbb{P}^3$

answered Nov 13, 2021 at 5:20

1 vote

Interesting examples of direct image bundles

answered Oct 11, 2021 at 6:19

9 votes

Motivation for birational geometry

answered Jul 21, 2021 at 7:17

2 votes

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Pseudoeffective divisors on surfaces

answered Jul 2, 2021 at 23:18

5 votes

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Projective manifold whose anticanonical section is composed of two components

answered Jun 25, 2021 at 0:50

1 vote

Restriction of small transformations

answered Jun 11, 2021 at 0:42

3 votes

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Making a vector bundle ample by twisting with ample line bundle

answered Jun 10, 2021 at 23:27

4 votes

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Residue of the canonical sheaf along subvariety

answered Apr 26, 2020 at 4:11

2 votes

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Is $\mathbb{Q}$-factoriality preserved under contraction?

answered Mar 29, 2020 at 4:02

4 votes

Example of nef divisor with Iitaka dimension 0

answered Jan 27, 2020 at 4:01

16 votes

Can Yoneda lemma for smooth projective varieties only use curves?

answered Dec 30, 2019 at 19:44

2 votes

Accepted

Does anyone know a reference in the literature regrading a proof that every projective hypersurface with vanishing canonical divisor is uniruled

answered Dec 9, 2019 at 17:58

6 votes

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Finiteness of birational types for targets of algebraic fibrations

answered Nov 20, 2019 at 1:39

3 votes

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Is projective closure of a regular affine algebraic set also regular?

answered Sep 25, 2019 at 21:40

11 votes

Accepted

Is the pullback of an ample bundle minus the exceptional divisor ample?

answered Sep 17, 2019 at 2:41

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590 Answers

Maybe a folklore natural map between reflexive pullbacks

Why is this polynomial factorizable?

Question about surface singularities

Locus where morphism has positive-dimensional fibers

Can a non-zero non-prime ideal become prime in a smaller ring?

Self-intersection of exceptional divisor from blowing up a subscheme

Inclusion of (pulling back of) dualizing sheaves under normalization

Canonical bundle of projections of Veronese Varieties

How to show that the intersection of two certain affine varieties is reduced?

Torsion of modules

Induced resolution of singularities

Two morphisms possess the same Viehweg's variation

Gorenstein varieties: why the two definitions are equivalent?

Is normality really needed for the Cox ring of a $ \mathbb{Q} $-factorial variety to be well defined or is regular in codimension one enough?

preserving quasi isomorphisms

Equivalence of sequences of blowups of $\mathbb{P}^3$

Interesting examples of direct image bundles

Motivation for birational geometry

Pseudoeffective divisors on surfaces

Projective manifold whose anticanonical section is composed of two components

Restriction of small transformations

Making a vector bundle ample by twisting with ample line bundle

Residue of the canonical sheaf along subvariety

Is $\mathbb{Q}$-factoriality preserved under contraction?

Example of nef divisor with Iitaka dimension 0

Can Yoneda lemma for smooth projective varieties only use curves?

Does anyone know a reference in the literature regrading a proof that every projective hypersurface with vanishing canonical divisor is uniruled

Finiteness of birational types for targets of algebraic fibrations

Is projective closure of a regular affine algebraic set also regular?

Is the pullback of an ample bundle minus the exceptional divisor ample?