List questions from projective-space

Published on 02 May 2019 - 6:52

455

Views

Intuition behind lines and points in the projective plane

Published on 25 Mar 2026 - 1:24

66

Views

Question on holomorphic map from compact Riemann surfaces into projective space associated with base point free divisor

Published on 25 Mar 2026 - 23:36

331

Views

Showing Proj $R[x,y]/(x^2)$ is not affine scheme

Published on 25 Mar 2026 - 3:02

481

Views

Projective Space vs. Vector Space

Published on 21 May 2019 - 10:56

34

Views

Central Projection and Existence of the Vector Space

Published on 26 Mar 2026 - 3:11

523

Views

Writing global sections of sheaves on $\mathbb{P}^n$ as morphisms

Published on 24 May 2019 - 18:17

73

Views

Why do these form a basis for $\mathbb C^{n+1}$?

Published on 26 May 2019 - 18:05

81

Views

Graded prime ideals of infinite poylnomial ring

Published on 25 Mar 2026 - 3:02

158

Views

Deducing that $R^kf_*(F \otimes L^{\otimes n})=0$ for large enough $n$ from a statement about sheaf cohomology

Published on 25 Mar 2026 - 12:41

19

Views

Why is $c((n+1)H_n^\ast) = c(H_n^\ast)^{n+1}$ for the total Chern class c.

Published on 25 Mar 2026 - 0:37

63

Views

Is $\mathcal{O}_{\mathbb{P}^1 \sqcup \, \mathbb{P}^1}$ a non-ample line bundle, and if so, how to show this?

Published on 25 Mar 2026 - 9:38

107

Views

Isomorphism and birrationality between projective varieties

Published on 25 Mar 2026 - 12:46

665

Views

Morphism between projective spaces

Published on 25 Mar 2026 - 2:56

298

Views

Intersection between projective curves

Published on 25 Mar 2026 - 6:07

List Question

Clarifying definition of $\mathbb{R}\mathbb{P}^n$

Intuition behind lines and points in the projective plane

Question on holomorphic map from compact Riemann surfaces into projective space associated with base point free divisor

Showing Proj $R[x,y]/(x^2)$ is not affine scheme

Projective Space vs. Vector Space

Central Projection and Existence of the Vector Space

Writing global sections of sheaves on $\mathbb{P}^n$ as morphisms

Why do these form a basis for $\mathbb C^{n+1}$?

Graded prime ideals of infinite poylnomial ring

Deducing that $R^kf_*(F \otimes L^{\otimes n})=0$ for large enough $n$ from a statement about sheaf cohomology

Why is $c((n+1)H_n^\ast) = c(H_n^\ast)^{n+1}$ for the total Chern class c.

Is $\mathcal{O}_{\mathbb{P}^1 \sqcup \, \mathbb{P}^1}$ a non-ample line bundle, and if so, how to show this?

Isomorphism and birrationality between projective varieties

Morphism between projective spaces

Intersection between projective curves

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