List questions from projective-space

Published on 14 Feb 2021 - 10:34

42

Views

Alternative interpretation of $\mathbb{CP}^n/\mathbb{CP}^{n-1}$

Published on 14 Feb 2021 - 21:56

80

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Projecting $\mathbb R^3$ onto $\mathbb RP^2$

Published on 21 Feb 2021 - 19:30

206

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Projection $\pi: \mathbb{P}^n \dashrightarrow \mathbb{P}^{n-1}$ away from center $p$ maps

Published on 26 Mar 2026 - 10:59

31

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What "concept" is invariant through a coordinate transformation here?

Published on 04 Mar 2021 - 10:56

234

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Non singular degenerate conics in the projective plane

Published on 25 Mar 2026 - 10:52

180

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Does the Borsuk-Ulam theorem work for the real projective space?

Published on 06 Mar 2021 - 23:33

262

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Structure of vector bundles over $(\mathbb P^1)^r$

Published on 09 Mar 2021 - 16:49

428

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Class of Ricci Form and first Chern class of canonical bundle

Published on 27 Mar 2026 - 16:09

20

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Projective linear variety can be defined by a linear system

Published on 13 Mar 2021 - 21:05

213

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Understanding why the lines in $\mathbb{P}^2$ can be seen as planes passing through the origin of $\mathbb{R}^3$

Published on 26 Mar 2026 - 23:11

338

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Is the real projective plane actually a cross cap?

Published on 19 Mar 2021 - 18:52

50

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Besse's Einstein manifolds typo: Euler characteristics of complex projective space is $m$

Published on 25 Mar 2021 - 15:40

751

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Homology of $\mathbb{CP}^{\infty}$

Published on 30 Mar 2021 - 11:00

45

Views

Proof that if a tangent line has two intersections with a conic, that the conic is degenerate

Published on 26 Mar 2026 - 6:07

List Question

Are global sections of varieties determined by their local rings?

Alternative interpretation of $\mathbb{CP}^n/\mathbb{CP}^{n-1}$

Projecting $\mathbb R^3$ onto $\mathbb RP^2$

Projection $\pi: \mathbb{P}^n \dashrightarrow \mathbb{P}^{n-1}$ away from center $p$ maps

What "concept" is invariant through a coordinate transformation here?

Non singular degenerate conics in the projective plane

Does the Borsuk-Ulam theorem work for the real projective space?

Structure of vector bundles over $(\mathbb P^1)^r$

Class of Ricci Form and first Chern class of canonical bundle

Projective linear variety can be defined by a linear system

Understanding why the lines in $\mathbb{P}^2$ can be seen as planes passing through the origin of $\mathbb{R}^3$

Is the real projective plane actually a cross cap?

Besse's Einstein manifolds typo: Euler characteristics of complex projective space is $m$

Homology of $\mathbb{CP}^{\infty}$

Proof that if a tangent line has two intersections with a conic, that the conic is degenerate

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