List questions from projective-space

Published on 26 Mar 2026 - 6:18

885

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Embed a weighted projective space into an unweighted projective space.

Published on 25 Mar 2026 - 3:00

418

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Let $A$ be an operator, such that $A^{\dagger}A$ is a projector. Show that $AA^{\dagger}$ is also a projector

Published on 25 Mar 2026 - 21:01

77

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Independent projections

Published on 25 Mar 2026 - 21:00

135

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Pencil and fundamental group

Published on 26 Mar 2026 - 10:58

1.8k

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Constant morphism between projective varieties

Published on 20 Mar 2019 - 22:17

51

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Kernel of ${\rm GL}(n,F)$ on ${\rm PG}(n-1,F)$ over a division ring $F$

Published on 25 Mar 2026 - 4:39

599

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Can an algebraic variety be embedded in projective space?

Published on 25 Mar 2026 - 6:02

118

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Property of Unirational variety

Published on 25 Mar 2026 - 6:05

406

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The map of graded rings $k[w, x, y, z] \rightarrow k[s, t]$ induces a closed embedding $\mathbb{P}_k^1 \rightarrow \mathbb{P}_k^3$

Published on 25 Mar 2026 - 4:43

242

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2 out of 3 property of fibrations?

Published on 25 Mar 2026 - 7:45

531

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Image of a line in $\mathbb{P}^2$ under Veronese embedding

Published on 30 Mar 2019 - 7:02

83

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Image of a line in $\mathbb{P}^2$ under Veronese embedding; a conicc

Published on 30 Mar 2019 - 20:54

285

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Vertical lines in the projective plane $P^2$

Published on 02 Apr 2019 - 13:49

300

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There cannot be a concept of parallelism in a homogeneous projective space?

Published on 25 Mar 2026 - 11:01

List Question

Triangle Inequality for Angles in Projective Space

Embed a weighted projective space into an unweighted projective space.

Let $A$ be an operator, such that $A^{\dagger}A$ is a projector. Show that $AA^{\dagger}$ is also a projector

Independent projections

Pencil and fundamental group

Constant morphism between projective varieties

Kernel of ${\rm GL}(n,F)$ on ${\rm PG}(n-1,F)$ over a division ring $F$

Can an algebraic variety be embedded in projective space?

Property of Unirational variety

The map of graded rings $k[w, x, y, z] \rightarrow k[s, t]$ induces a closed embedding $\mathbb{P}_k^1 \rightarrow \mathbb{P}_k^3$

2 out of 3 property of fibrations?

Image of a line in $\mathbb{P}^2$ under Veronese embedding

Image of a line in $\mathbb{P}^2$ under Veronese embedding; a conicc

Vertical lines in the projective plane $P^2$

There cannot be a concept of parallelism in a homogeneous projective space?

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