List questions from projective-space

Published on 26 Mar 2026 - 7:56

2.2k

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When are three points of a projective plane collinear?

Published on 22 Jan 2017 - 20:01

365

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How to find the corresponding Collineation?

Published on 22 Jan 2017 - 21:13

84

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Question about the number of tangent lines and branches at infinity of algebraic curves.

Published on 23 Jan 2017 - 14:55

292

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Vector space, affine space & projective space

Published on 27 Mar 2026 - 8:38

1k

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How to calculate the distance between two points in projective plane

Published on 23 Jan 2017 - 20:57

1.4k

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Construction of Grassmannian

Published on 25 Mar 2026 - 17:18

144

Views

Restriction of a finite morphism to an affine closed set

Published on 24 Jan 2017 - 1:08

40

Views

understanding map from a manifold to a matrix

Published on 26 Jan 2017 - 18:04

184

Views

The set of maximal flags is projective

Published on 28 Jan 2017 - 18:16

136

Views

How to show for $Y\subset \mathbb{P}^n$ we have $\dim C(Y)=\dim Y+1$

Published on 01 Feb 2017 - 17:23

264

Views

zero sets $Z(f)$ and $Z(g)$ are different in $\mathbb{P}^n$

Published on 03 Feb 2017 - 18:53

33

Views

Orthogonal Projections: Prove that $\left\|P_1+P_2\right\|\leq\left\|P_1\right\|+\left\|P_2\right\|$

Published on 04 Feb 2017 - 13:59

647

Views

Conics with a singular point

Published on 06 Feb 2017 - 18:49

366

Views

Dolbeault Cohomology on Riemann Sphere

Published on 26 Mar 2026 - 16:05

List Question

$\mathbb{P}^1$ is not affine

When are three points of a projective plane collinear?

How to find the corresponding Collineation?

Question about the number of tangent lines and branches at infinity of algebraic curves.

Vector space, affine space & projective space

How to calculate the distance between two points in projective plane

Construction of Grassmannian

Restriction of a finite morphism to an affine closed set

understanding map from a manifold to a matrix

The set of maximal flags is projective

How to show for $Y\subset \mathbb{P}^n$ we have $\dim C(Y)=\dim Y+1$

zero sets $Z(f)$ and $Z(g)$ are different in $\mathbb{P}^n$

Orthogonal Projections: Prove that $\left\|P_1+P_2\right\|\leq\left\|P_1\right\|+\left\|P_2\right\|$

Conics with a singular point

Dolbeault Cohomology on Riemann Sphere

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