Question

Restriction maps in an integral scheme are injective (Ayman Hourieh's proof)

score 800 · Answer 1 · 2018-04-17 22:13:51

800

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Restriction maps in an integral scheme are injective (Ayman Hourieh's proof)

Published on 17 Apr 2018 - 22:13

score 83 · Answer 2 · 2026-03-23 02:19:42

83

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A question about a definition of the Hilbert scheme $ \mathcal{H}_P ( \mathbb{P}^n ) $.

Published on 23 Mar 2026 - 2:19

score 214 · Answer 3 · 2026-03-23 00:04:56

214

Views

Why is : $ \mathrm{dim} \ ( S_X )_d = \begin{pmatrix} n+d \\ n \end{pmatrix} - \begin{pmatrix} n+d-s \\ n \end{pmatrix} $?

Published on 23 Mar 2026 - 0:04

score 806 · Answer 4 · 2018-04-22 21:58:29

806

Views

What is the difference between intersection theory and enumerative geometry?

Published on 22 Apr 2018 - 21:58

score 86 · Answer 5 · 2026-03-25 09:59:14

86

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Doubt on twisting sheaves definition

Published on 25 Mar 2026 - 9:59

score 256 · Answer 6 · 2026-03-22 17:19:50

256

Views

Question on flat morphisms and Hilbert polynomials

Published on 22 Mar 2026 - 17:19

score 311 · Answer 7 · 2018-04-26 20:49:04

311

Views

Affine-local property that is not stalk-local

Published on 26 Apr 2018 - 20:49

score 547 · Answer 8 · 2018-04-26 21:06:35

A scheme that can be covered by finitely many affine open subschemes with noetherian topology is not necessarily a noetherian scheme?

score 241 · Answer 9 · 2018-04-27 11:30:37

241

Views

Non affine scheme with affine irreducible components.

Published on 27 Apr 2018 - 11:30

score 478 · Answer 10 · 2018-04-28 19:09:13

478

Views

The minimal primes of $\mathscr{O}_{X,p}$ are in canonical bijection with the irreducible components of $X$ passing through $p$.

Published on 28 Apr 2018 - 19:09

score 2.3k · Answer 11 · 2026-03-24 23:50:53

2.3k

Views

two intersection of affine open subsets

Published on 24 Mar 2026 - 23:50

score 452 · Answer 12 · 2026-03-25 01:16:47

452

Views

Extending a Cartier divisor on a curve to singular points?

Published on 25 Mar 2026 - 1:16

score 858 · Answer 13 · 2018-05-03 22:00:10

858

Views

closed point of a locally finite $k$-scheme (Hanno's proof)

Published on 03 May 2018 - 22:00

score 894 · Answer 14 · 2018-05-03 22:14:11

894

Views

Is every affine open subset of a locally Noetherian scheme also Noetherian?

Published on 03 May 2018 - 22:14

score 945 · Answer 15 · 2018-05-05 14:01:14

945

Views

Does "local on the target" mean the same thing as "local on the base"?

Published on 05 May 2018 - 14:01

List Question

Restriction maps in an integral scheme are injective (Ayman Hourieh's proof)

A question about a definition of the Hilbert scheme $ \mathcal{H}_P ( \mathbb{P}^n ) $.

Why is : $ \mathrm{dim} \ ( S_X )_d = \begin{pmatrix} n+d \\ n \end{pmatrix} - \begin{pmatrix} n+d-s \\ n \end{pmatrix} $?

What is the difference between intersection theory and enumerative geometry?

Doubt on twisting sheaves definition

Question on flat morphisms and Hilbert polynomials

Affine-local property that is not stalk-local

A scheme that can be covered by finitely many affine open subschemes with noetherian topology is not necessarily a noetherian scheme?

Non affine scheme with affine irreducible components.

The minimal primes of $\mathscr{O}_{X,p}$ are in canonical bijection with the irreducible components of $X$ passing through $p$.

two intersection of affine open subsets

Extending a Cartier divisor on a curve to singular points?

closed point of a locally finite $k$-scheme (Hanno's proof)

Is every affine open subset of a locally Noetherian scheme also Noetherian?

Does "local on the target" mean the same thing as "local on the base"?

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