Question

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

score 84 · Answer 1 · 2026-05-10 13:51:24

84

Views

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

Published on 10 May 2026 - 13:51

score 464 · Answer 2 · 2026-04-16 15:01:05

464

Views

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

Published on 16 Apr 2026 - 15:01

score 75 · Answer 3 · 2026-05-01 11:47:24

75

Views

Generically rebuilding non-degenerate matrices from a vector

Published on 01 May 2026 - 11:47

score 589 · Answer 4 · 2026-04-29 12:18:54

589

Views

Triangulation of the projective plane (number of points required)

Published on 29 Apr 2026 - 12:18

score 53 · Answer 5 · 2026-04-14 22:09:43

53

Views

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

Published on 14 Apr 2026 - 22:09

score 263 · Answer 6 · 2026-04-15 02:28:50

263

Views

Projective Space over an algebraically closed field

Published on 15 Apr 2026 - 2:28

score 502 · Answer 7 · 2026-05-10 11:39:38

502

Views

Degree of Projections???

Published on 10 May 2026 - 11:39

score 181 · Answer 8 · 2026-04-30 21:04:05

181

Views

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

Published on 30 Apr 2026 - 21:04

score 120 · Answer 9 · 2026-05-07 14:38:06

120

Views

How to choose coordinates for a projective scheme.

Published on 07 May 2026 - 14:38

score 59 · Answer 10 · 2026-04-29 12:47:59

59

Views

Projective space and sections inducing the same homology morphisms

Published on 29 Apr 2026 - 12:47

score 45 · Answer 11 · 2026-04-14 19:41:08

45

Views

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

Published on 14 Apr 2026 - 19:41

score 224 · Answer 12 · 2026-05-10 14:34:53

224

Views

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

Published on 10 May 2026 - 14:34

score 63 · Answer 13 · 2026-05-10 12:32:19

63

Views

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

Published on 10 May 2026 - 12:32

score 43 · Answer 14 · 2026-04-13 23:39:15

43

Views

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

Published on 13 Apr 2026 - 23:39

score 249 · Answer 15 · 2026-04-15 23:24:11

249

Views

Any Line Intersects the Parabola Twice in Projective Space

Published on 15 Apr 2026 - 23:24

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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