Question

Why does a map from curve to projective space extend UNIQUELY over regular closed point

score 894 · Answer 1 · 2026-04-15 06:07:08

894

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Why does a map from curve to projective space extend UNIQUELY over regular closed point

Published on 15 Apr 2026 - 6:07

score 1.2k · Answer 2 · 2026-04-29 12:52:50

1.2k

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Dimension of scheme of finite type over a field under base change (Hartshorne Ex. II.3.20)

Published on 29 Apr 2026 - 12:52

score 81 · Answer 3 · 2026-05-07 08:51:59

81

Views

References for sufficiency of tangential criteria for formally smooth/unramified/étale morphisms

Published on 07 May 2026 - 8:51

score 328 · Answer 4 · 2026-04-18 08:12:01

328

Views

Splitting of $f_*\mathcal O_X$

Published on 18 Apr 2026 - 8:12

score 145 · Answer 5 · 2026-05-07 18:58:45

145

Views

Poincare-Euler characteristic and sum of two divisors

Published on 07 May 2026 - 18:58

score 606 · Answer 6 · 2026-05-05 12:34:06

606

Views

Affine Schemes and Basic Open Sets

Published on 05 May 2026 - 12:34

score 353 · Answer 7 · 2026-04-16 08:40:57

353

Views

Invertible sheaf whose global section is not finitely generated

Published on 16 Apr 2026 - 8:40

score 65 · Answer 8 · 2026-04-29 12:50:39

65

Views

Does the scheme-theoretic definition of a manifold include Hausdorffness and second-countability?

Published on 29 Apr 2026 - 12:50

score 55 · Answer 9 · 2026-04-11 04:43:19

55

Views

Locally constructible subsets of $\mathrm{Spec} \mathbb{Z}$

Published on 11 Apr 2026 - 4:43

score 207 · Answer 10 · 2026-04-16 13:00:53

207

Views

Fibered surface is flat if and only if it surjects onto the base

Published on 16 Apr 2026 - 13:00

score 56 · Answer 11 · 2026-04-14 16:45:36

56

Views

Meaning of "isomorphism over the regular points"

Published on 14 Apr 2026 - 16:45

score 101 · Answer 12 · 2026-04-24 21:44:18

101

Views

Meaning of $f$ being a function on $\text{Spec}(A)$

Published on 24 Apr 2026 - 21:44

score 84 · Answer 13 · 2026-04-11 22:27:55

84

Views

What is the use of considering non-reduced schemes?

Published on 11 Apr 2026 - 22:27

score 411 · Answer 14 · 2026-04-29 12:50:31

411

Views

Cohomology and inverse image of divisors

Published on 29 Apr 2026 - 12:50

score 332 · Answer 15 · 2026-05-05 04:09:40

332

Views

Is there a classifying topos for schemes?

Published on 05 May 2026 - 4:09

List Question

Why does a map from curve to projective space extend UNIQUELY over regular closed point

Dimension of scheme of finite type over a field under base change (Hartshorne Ex. II.3.20)

References for sufficiency of tangential criteria for formally smooth/unramified/étale morphisms

Splitting of $f_*\mathcal O_X$

Poincare-Euler characteristic and sum of two divisors

Affine Schemes and Basic Open Sets

Invertible sheaf whose global section is not finitely generated

Does the scheme-theoretic definition of a manifold include Hausdorffness and second-countability?

Locally constructible subsets of $\mathrm{Spec} \mathbb{Z}$

Fibered surface is flat if and only if it surjects onto the base

Meaning of "isomorphism over the regular points"

Meaning of $f$ being a function on $\text{Spec}(A)$

What is the use of considering non-reduced schemes?

Cohomology and inverse image of divisors

Is there a classifying topos for schemes?

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