List questions from projective-schemes

Published on 16 Apr 2026 - 12:02

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Degree of ample bundle over projective curve is positive

Published on 14 Apr 2026 - 1:54

486

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Local complete intersection scheme, conormal sheaves and differentials

Published on 16 Apr 2026 - 14:56

193

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The structure morphism of a projective variety induces a morphism of $k$-algeras

Published on 14 Apr 2026 - 5:17

3.6k

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Torsion sheaves on a curve

Published on 16 Apr 2026 - 12:00

3.3k

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Projective varieties and irreducibility

Published on 15 Apr 2026 - 2:28

88

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$\mathbb C$-isomorphism between two $\mathbb C$-schemes.

Published on 10 Apr 2026 - 19:26

254

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Scheme theoretic dual of $\mathbb P^n_k$

Published on 15 Apr 2026 - 5:53

249

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Does the canonical morphism commute with direct image functor?

Published on 10 May 2026 - 21:34

375

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Notation in the Semicontinuity Theorem

Published on 12 Apr 2026 - 8:17

101

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$(-1)$-curves and base change along a field automorphism.

Published on 13 Apr 2026 - 20:46

119

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Confused about short exact sequence involving $\mathcal{O}_{\mathbb{P}^n}$ and $\mathcal{O}_Z$ for $\pi:Z\rightarrow \mathbb{P}^n$ closed embedding

Published on 13 Apr 2026 - 20:22

95

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Point at infinity of the scheme $\mathbb{P}^1$

Published on 11 Apr 2026 - 6:59

61

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What is the definition of $I(Z)$ when $Z \subseteq Proj S$

Published on 10 Apr 2026 - 19:45

1.6k

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Compute the cohomology of projective schemes

Published on 16 Apr 2026 - 23:13

List Question

Twisting relative proj (exercise from Vakil)

Degree of ample bundle over projective curve is positive

Local complete intersection scheme, conormal sheaves and differentials

The structure morphism of a projective variety induces a morphism of $k$-algeras

Torsion sheaves on a curve

Projective varieties and irreducibility

$\mathbb C$-isomorphism between two $\mathbb C$-schemes.

Scheme theoretic dual of $\mathbb P^n_k$

Does the canonical morphism commute with direct image functor?

Notation in the Semicontinuity Theorem

$(-1)$-curves and base change along a field automorphism.

Confused about short exact sequence involving $\mathcal{O}_{\mathbb{P}^n}$ and $\mathcal{O}_Z$ for $\pi:Z\rightarrow \mathbb{P}^n$ closed embedding

Point at infinity of the scheme $\mathbb{P}^1$

What is the definition of $I(Z)$ when $Z \subseteq Proj S$

Compute the cohomology of projective schemes

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