Question

How do I compute the action of an automorphism on the Néron-Severi group of a projective variety?

score 58 · Answer 1 · 2026-04-17 01:48:48

58

Views

How do I compute the action of an automorphism on the Néron-Severi group of a projective variety?

Published on 17 Apr 2026 - 1:48

score 123 · Answer 2 · 2026-04-12 17:55:29

123

Views

Is there a non-coherent subsheaf of $\mathscr{O}(-1)$ on $\mathbb{P}^1$

Published on 12 Apr 2026 - 17:55

score 63 · Answer 3 · 2026-04-14 21:01:32

Showing injectivity of a map between the sum of Picard groups of projective smooth irrudicible curve and the Picard group of the product of the curve

score 95 · Answer 4 · 2026-04-16 01:23:21

95

Views

Type of the intersection form of a degree $d$ hypersurface of $\mathbb{P}^3$.

Published on 16 Apr 2026 - 1:23

score 44 · Answer 5 · 2026-04-14 05:32:29

44

Views

What are the conditions for a function $f\colon X \to Y$ to be regular when $X$ and $Y$ are prevarieties?

Published on 14 Apr 2026 - 5:32

score 43 · Answer 6 · 2026-05-11 00:43:15

43

Views

Finding a good homogeneous coordinate ring for a smooth projective variety

Published on 11 May 2026 - 0:43

score 55 · Answer 7 · 2026-04-15 07:12:35

55

Views

Regularity of $H \cap X$ in Bertini's Theorem (Hartshorne CH. 2, Theorem 8.18)

Published on 15 Apr 2026 - 7:12

score 1.9k · Answer 8 · 2026-03-25 15:51:31

1.9k

Views

Affine Cover of $\mathbb{P}^n$

Published on 25 Mar 2026 - 15:51

score 170 · Answer 9 · 2026-04-10 13:43:22

170

Views

How to show the blowing down a ruled surface is projective

Published on 10 Apr 2026 - 13:43

score 241 · Answer 10 · 2026-04-16 10:06:09

241

Views

Given a projective variety, finding another variety of appropriate dimension with empty intersection

Published on 16 Apr 2026 - 10:06

score 488 · Answer 11 · 2026-04-16 02:47:36

488

Views

universal property of Albanese variety

Published on 16 Apr 2026 - 2:47

score 461 · Answer 12 · 2026-04-11 07:33:22

461

Views

Bertini's Theorem Proof Explanation from Vakil's notes

Published on 11 Apr 2026 - 7:33

score 238 · Answer 13 · 2026-04-11 16:34:40

238

Views

Conic bundles structure

Published on 11 Apr 2026 - 16:34

score 427 · Answer 14 · 2026-04-15 09:22:26

427

Views

Some Examples of Sheaves on Varieties (Hartshorne's Exercise II.1.21)

Published on 15 Apr 2026 - 9:22

score 177 · Answer 15 · 2026-04-13 08:39:57

177

Views

Degree of union is the sum of degrees

Published on 13 Apr 2026 - 8:39

List Question

How do I compute the action of an automorphism on the Néron-Severi group of a projective variety?

Is there a non-coherent subsheaf of $\mathscr{O}(-1)$ on $\mathbb{P}^1$

Showing injectivity of a map between the sum of Picard groups of projective smooth irrudicible curve and the Picard group of the product of the curve

Type of the intersection form of a degree $d$ hypersurface of $\mathbb{P}^3$.

What are the conditions for a function $f\colon X \to Y$ to be regular when $X$ and $Y$ are prevarieties?

Finding a good homogeneous coordinate ring for a smooth projective variety

Regularity of $H \cap X$ in Bertini's Theorem (Hartshorne CH. 2, Theorem 8.18)

Affine Cover of $\mathbb{P}^n$

How to show the blowing down a ruled surface is projective

Given a projective variety, finding another variety of appropriate dimension with empty intersection

universal property of Albanese variety

Bertini's Theorem Proof Explanation from Vakil's notes

Conic bundles structure

Some Examples of Sheaves on Varieties (Hartshorne's Exercise II.1.21)

Degree of union is the sum of degrees

Trending Questions

Popular # Hahtags

Popular Questions