Question

Why is the Cross-ratio $ \lambda (z_1 , \dots , z_4 ) $ the image of $ z_4 $ under $ T $ satisfying some conditions?

score 78 · Answer 1 · 2018-02-18 13:20:07

78

Views

Why is the Cross-ratio $ \lambda (z_1 , \dots , z_4 ) $ the image of $ z_4 $ under $ T $ satisfying some conditions?

Published on 18 Feb 2018 - 13:20

score 462 · Answer 2 · 2026-03-25 00:04:24

462

Views

Hessian of a smooth homogeneous polynomial of degree $d \ge 3$ is homogeneous of degree $3(d-2)$?

Published on 25 Mar 2026 - 0:04

score 68 · Answer 3 · 2026-03-25 04:27:25

68

Views

Generically rebuilding non-degenerate matrices from a vector

Published on 25 Mar 2026 - 4:27

score 581 · Answer 4 · 2026-03-20 02:54:45

581

Views

Triangulation of the projective plane (number of points required)

Published on 20 Mar 2026 - 2:54

score 50 · Answer 5 · 2018-02-21 22:58:42

50

Views

Variety in $\mathbb{P}^{n_1}\times ...\times \mathbb{P}^{n_r}\times\mathbb{A}^{m} $

Published on 21 Feb 2018 - 22:58

score 261 · Answer 6 · 2026-03-22 16:37:40

261

Views

Projective Space over an algebraically closed field

Published on 22 Mar 2026 - 16:37

score 492 · Answer 7 · 2026-03-22 08:09:36

492

Views

Degree of Projections???

Published on 22 Mar 2026 - 8:09

score 172 · Answer 8 · 2026-03-23 11:46:59

172

Views

When you divide the real projective plane into two subsets, does it always have exactly one non-orientable component?

Published on 23 Mar 2026 - 11:46

score 112 · Answer 9 · 2026-03-20 03:41:05

112

Views

How to choose coordinates for a projective scheme.

Published on 20 Mar 2026 - 3:41

score 52 · Answer 10 · 2026-03-22 22:10:28

52

Views

Projective space and sections inducing the same homology morphisms

Published on 22 Mar 2026 - 22:10

score 43 · Answer 11 · 2018-03-02 20:20:14

43

Views

the adjunction space $\mathbb{B}_{2n} \cup_{p_{1}} \mathbb{CP}^n$ homeomorphic to $\mathbb{CP}^{n+1}$.

Published on 02 Mar 2018 - 20:20

score 220 · Answer 12 · 2018-03-03 20:33:38

220

Views

Is a smooth cubic in $\mathbb P^2(\mathbb C)$ never birational to a line in $\mathbb P^2(\mathbb C)$?

Published on 03 Mar 2018 - 20:33

score 54 · Answer 13 · 2026-03-24 23:44:42

54

Views

On points with same $x$-co-ordinate on certain cubic curve

Published on 24 Mar 2026 - 23:44

score 41 · Answer 14 · 2018-03-06 22:16:22

41

Views

Where to find informations for projective planes over algebraic closed fields like $\bar{Q}$

Published on 06 Mar 2018 - 22:16

score 246 · Answer 15 · 2018-03-07 20:14:50

246

Views

Any Line Intersects the Parabola Twice in Projective Space

Published on 07 Mar 2018 - 20:14

List Question

Why is the Cross-ratio $ \lambda (z_1 , \dots , z_4 ) $ the image of $ z_4 $ under $ T $ satisfying some conditions?

Hessian of a smooth homogeneous polynomial of degree $d \ge 3$ is homogeneous of degree $3(d-2)$?

Generically rebuilding non-degenerate matrices from a vector

Triangulation of the projective plane (number of points required)

Variety in $\mathbb{P}^{n_1}\times ...\times \mathbb{P}^{n_r}\times\mathbb{A}^{m} $

Projective Space over an algebraically closed field

Degree of Projections???

When you divide the real projective plane into two subsets, does it always have exactly one non-orientable component?

How to choose coordinates for a projective scheme.

Projective space and sections inducing the same homology morphisms

the adjunction space $\mathbb{B}_{2n} \cup_{p_{1}} \mathbb{CP}^n$ homeomorphic to $\mathbb{CP}^{n+1}$.

Is a smooth cubic in $\mathbb P^2(\mathbb C)$ never birational to a line in $\mathbb P^2(\mathbb C)$?

On points with same $x$-co-ordinate on certain cubic curve

Where to find informations for projective planes over algebraic closed fields like $\bar{Q}$

Any Line Intersects the Parabola Twice in Projective Space

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