List questions from projective-space

Published on 12 Oct 2014 - 12:48

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Find diagonal of inverse matrix

Published on 26 Mar 2026 - 11:03

7.7k

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How to show $P^1\times P^1$ (as projective variety by Segre embedding) is not isomorphic to $P^2$?

Published on 21 Oct 2014 - 1:54

1.8k

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How to visualize the $d$-uple embedding?

Published on 21 Oct 2014 - 2:21

81

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Help on formalisation proof of the triviality of a kernel in Mayer-Vietoris

Published on 26 Mar 2026 - 12:53

108

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Cohomology of intersection of hyperplanes

Published on 25 Mar 2026 - 22:26

471

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Unitary transformation of Fubini-Study metric

Published on 11 Nov 2014 - 10:05

220

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Does an odd degree map on $S^n$ descend to an odd degree maps on $\mathbb{R}P^n$?

Published on 20 Nov 2014 - 5:02

287

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Axioms vs Models in projective and hyperbolic geometry

Published on 27 Mar 2026 - 4:34

208

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Comparison between two definitions of real projective spaces.

Published on 28 Nov 2014 - 11:03

785

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projective space over finite fields

Published on 02 Dec 2014 - 7:53

234

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A birational map from $\mathbb{P}^1$ to an irreducible plane projective curve

Published on 02 Dec 2014 - 23:29

101

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How to prove that $Aut(\mathbb{P}^2) \cong PSL_3 (\mathbb{C})$?

Published on 03 Dec 2014 - 15:21

399

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Reference request: second Chern class of P^2

Published on 25 Mar 2026 - 23:51

1k

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Is the complex projective plane a compact manifold with or without boundary (closed manifold)?

Published on 26 Mar 2026 - 1:17

List Question

How to visualize topological differences between $\mathbb{R}P^{2n}$ and $\mathbb{C}P^n$

Find diagonal of inverse matrix

How to show $P^1\times P^1$ (as projective variety by Segre embedding) is not isomorphic to $P^2$?

How to visualize the $d$-uple embedding?

Help on formalisation proof of the triviality of a kernel in Mayer-Vietoris

Cohomology of intersection of hyperplanes

Unitary transformation of Fubini-Study metric

Does an odd degree map on $S^n$ descend to an odd degree maps on $\mathbb{R}P^n$?

Axioms vs Models in projective and hyperbolic geometry

Comparison between two definitions of real projective spaces.

projective space over finite fields

A birational map from $\mathbb{P}^1$ to an irreducible plane projective curve

How to prove that $Aut(\mathbb{P}^2) \cong PSL_3 (\mathbb{C})$?

Reference request: second Chern class of P^2

Is the complex projective plane a compact manifold with or without boundary (closed manifold)?

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