List questions from projective-space

Published on 29 Mar 2026 - 20:04

150

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Quadratic form is well defined in $\mathbb{RP}^2$

Published on 01 Sep 2017 - 2:26

113

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$\dim H^0(X, \mathcal{O}(n)) = ?$ for genus $g$ Riemann surface $X$.

Published on 01 Sep 2017 - 15:08

1.1k

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Matrix of the perpendicular Projection

Published on 27 Mar 2026 - 10:45

466

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Projective line and homogeneous coordinates

Published on 04 Sep 2017 - 16:10

1.2k

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Point of intersection of lines in $\mathbb{RP}^2$

Published on 04 Sep 2017 - 22:21

694

Views

Why is the zero locus of an homogeneous polynomial a closed set in the projective space?

Published on 27 Mar 2026 - 14:59

149

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When two affine subspaces are parallel?

Published on 29 Mar 2026 - 21:23

326

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Help visualising immersion of $\mathbb{R}P_3$ in $\mathbb{R^4}$

Published on 09 Sep 2017 - 17:46

188

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Which subvarieties of $P^3$ are isomorphic to $P^2$?

Published on 14 Sep 2017 - 13:06

1.2k

Views

What is the right way to think of a line in projective space?

Published on 14 Sep 2017 - 23:02

240

Views

On Fundamental theorem of projective geometry

Published on 18 Sep 2017 - 15:40

1.8k

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How to interpret the action of a projective linear group on a projective space?

Published on 24 Sep 2017 - 9:54

90

Views

Why does my method for computing roots with multiplicity give the wrong answer at infinity, and can it be repaired?

Published on 25 Mar 2026 - 20:08

144

Views

Sections of projective space and PGL

Published on 26 Sep 2017 - 17:51

List Question

What is the analog of a vector bundle connection for a projective bundle?

Quadratic form is well defined in $\mathbb{RP}^2$

$\dim H^0(X, \mathcal{O}(n)) = ?$ for genus $g$ Riemann surface $X$.

Matrix of the perpendicular Projection

Projective line and homogeneous coordinates

Point of intersection of lines in $\mathbb{RP}^2$

Why is the zero locus of an homogeneous polynomial a closed set in the projective space?

When two affine subspaces are parallel?

Help visualising immersion of $\mathbb{R}P_3$ in $\mathbb{R^4}$

Which subvarieties of $P^3$ are isomorphic to $P^2$?

What is the right way to think of a line in projective space?

On Fundamental theorem of projective geometry

How to interpret the action of a projective linear group on a projective space?

Why does my method for computing roots with multiplicity give the wrong answer at infinity, and can it be repaired?

Sections of projective space and PGL

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