Question

Nonsingular conics are isomorphic over algebraically closed field

score 437 · Answer 1 · 2022-07-02 10:24:52

437

Views

Nonsingular conics are isomorphic over algebraically closed field

Published on 02 Jul 2022 - 10:24

score 255 · Answer 2 · 2026-03-27 14:55:03

255

Views

How to easily introduce the projective tangent space?

Published on 27 Mar 2026 - 14:55

score 134 · Answer 3 · 2026-03-27 23:41:02

134

Views

Lines on Fermat cubic in projective space

Published on 27 Mar 2026 - 23:41

score 47 · Answer 4 · 2026-03-26 19:09:25

47

Views

$\mathbb{C} \mathbb{P}^1$-bundles and $\mathbb{C}^\times$ bundles

Published on 26 Mar 2026 - 19:09

score 168 · Answer 5 · 2026-03-26 11:17:28

168

Views

Why the global sections of the hyperplane bundle over a projectivization $\mathbb{P}(V)$ can be identified with the dual Space $V^*$

Published on 26 Mar 2026 - 11:17

score 112 · Answer 6 · 2026-03-26 17:46:13

112

Views

How to show $x_0^2+x_1^2+x_2^2=0 \subset \mathbb{CP}^2 \iff \mathbb{CP}^1$

Published on 26 Mar 2026 - 17:46

score 35 · Answer 7 · 2026-03-26 16:05:11

35

Views

Are points $(a:b)\in \mathbb{P}^1$ which satisfy $X\subset V(af+bg)$ closed?

Published on 26 Mar 2026 - 16:05

score 53 · Answer 8 · 2026-03-25 07:44:06

53

Views

comparision of the Bruhat-tits tree with lattices in $\mathbb{R}^2$ || request for resources

Published on 25 Mar 2026 - 7:44

score 57 · Answer 9 · 2022-08-04 05:33:57

57

Views

What are Desarguesian and non-Desarguesian projective spaces?

Published on 04 Aug 2022 - 5:33

score 122 · Answer 10 · 2022-08-08 16:08:45

122

Views

Gauss map and image of projective variety $V : x^4+y^4+z^4=0$ in $\mathbb{P}^2$

Published on 08 Aug 2022 - 16:08

score 130 · Answer 11 · 2026-04-01 00:25:24

130

Views

What's the $2$d-object that's in $1:1$ correspondence with all lines in $\Bbb R^2$?

Published on 01 Apr 2026 - 0:25

score 341 · Answer 12 · 2026-03-31 14:13:55

341

Views

Is Richter-Gebert's Theorem: "A projective transformation maps collinear points to collinear points." really a theorem?

Published on 31 Mar 2026 - 14:13

score 199 · Answer 13 · 2022-08-24 18:16:14

199

Views

Proof the the real projection space is Hausdorff and second countable

Published on 24 Aug 2022 - 18:16

score 126 · Answer 14 · 2022-08-26 08:29:30

126

Views

Deleting a non-contractible embedded loop from the real projective plane

Published on 26 Aug 2022 - 8:29

score 143 · Answer 15 · 2022-08-27 10:17:50

143

Views

A smooth hypersurface of $\mathbb P^n$ is a point in some other projective space

Published on 27 Aug 2022 - 10:17

List Question

Nonsingular conics are isomorphic over algebraically closed field

How to easily introduce the projective tangent space?

Lines on Fermat cubic in projective space

$\mathbb{C} \mathbb{P}^1$-bundles and $\mathbb{C}^\times$ bundles

Why the global sections of the hyperplane bundle over a projectivization $\mathbb{P}(V)$ can be identified with the dual Space $V^*$

How to show $x_0^2+x_1^2+x_2^2=0 \subset \mathbb{CP}^2 \iff \mathbb{CP}^1$

Are points $(a:b)\in \mathbb{P}^1$ which satisfy $X\subset V(af+bg)$ closed?

comparision of the Bruhat-tits tree with lattices in $\mathbb{R}^2$ || request for resources

What are Desarguesian and non-Desarguesian projective spaces?

Gauss map and image of projective variety $V : x^4+y^4+z^4=0$ in $\mathbb{P}^2$

What's the $2$d-object that's in $1:1$ correspondence with all lines in $\Bbb R^2$?

Is Richter-Gebert's Theorem: "A projective transformation maps collinear points to collinear points." really a theorem?

Proof the the real projection space is Hausdorff and second countable

Deleting a non-contractible embedded loop from the real projective plane

A smooth hypersurface of $\mathbb P^n$ is a point in some other projective space

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