Question

How to determine four points with cross-ratio 3 on four given lines in $\mathbb{C}P^2$

score 502 · Answer 1 · 2013-08-01 09:24:37

502

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How to determine four points with cross-ratio 3 on four given lines in $\mathbb{C}P^2$

Published on 01 Aug 2013 - 9:24

score 77 · Answer 2 · 2026-03-31 20:25:22

77

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Is this parabola the same as this circle?

Published on 31 Mar 2026 - 20:25

score 538 · Answer 3 · 2013-08-05 02:56:18

538

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Birational between affine and projective

Published on 05 Aug 2013 - 2:56

score 8.1k · Answer 4 · 2026-03-26 06:29:15

8.1k

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How do you create projective plane out of a finite field?

Published on 26 Mar 2026 - 6:29

score 3.7k · Answer 5 · 2026-03-31 19:18:08

3.7k

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Is a projective space a vector space? If not, what of a basis?

Published on 31 Mar 2026 - 19:18

score 61 · Answer 6 · 2026-03-25 18:31:25

61

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Properties of divisors when moving from char 0 to char p.

Published on 25 Mar 2026 - 18:31

score 278 · Answer 7 · 2013-08-24 15:37:47

278

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How to calculate the dimension of the intersection of projection of varieties?

Published on 24 Aug 2013 - 15:37

score 89 · Answer 8 · 2013-08-27 09:38:36

89

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Isomorphism between quotients of linear groups

Published on 27 Aug 2013 - 9:38

score 4.1k · Answer 9 · 2026-03-31 20:58:36

4.1k

Views

How to get the intersection of two parallel lines on projective plane $\mathbb{P}^{2}$?

Published on 31 Mar 2026 - 20:58

score 324 · Answer 10 · 2013-08-31 10:18:58

324

Views

Determining a conic section from points and tangent lines

Published on 31 Aug 2013 - 10:18

score 681 · Answer 11 · 2013-09-15 02:37:07

681

Views

Find all rational points on the circle $x^2 + y^2 = 2$ by projecting from the point $(1, 1)$ onto an appropriate rational line

Published on 15 Sep 2013 - 2:37

score 108.9k · Answer 12 · 2013-09-15 09:32:06

108.9k

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How to compute homography matrix H from corresponding points (2d-2d planar Homography)

Published on 15 Sep 2013 - 9:32

score 136 · Answer 13 · 2013-09-20 14:19:15

136

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Can two different rectangular objects in 3D space look the same after a projective transformation onto a 2D plane?

Published on 20 Sep 2013 - 14:19

score 942 · Answer 14 · 2026-03-31 20:57:40

942

Views

Three dimensional projective space $\mathbb{RP}^3$

Published on 31 Mar 2026 - 20:57

score 71 · Answer 15 · 2013-09-23 20:13:51

71

Views

Are there in $(\mathbb{C}[x,y,z]/(x^3+y^3+z^3))_{x}$ exactly $12$ lines?

Published on 23 Sep 2013 - 20:13

List Question

How to determine four points with cross-ratio 3 on four given lines in $\mathbb{C}P^2$

Is this parabola the same as this circle?

Birational between affine and projective

How do you create projective plane out of a finite field?

Is a projective space a vector space? If not, what of a basis?

Properties of divisors when moving from char 0 to char p.

How to calculate the dimension of the intersection of projection of varieties?

Isomorphism between quotients of linear groups

How to get the intersection of two parallel lines on projective plane $\mathbb{P}^{2}$?

Determining a conic section from points and tangent lines

Find all rational points on the circle $x^2 + y^2 = 2$ by projecting from the point $(1, 1)$ onto an appropriate rational line

How to compute homography matrix H from corresponding points (2d-2d planar Homography)

Can two different rectangular objects in 3D space look the same after a projective transformation onto a 2D plane?

Three dimensional projective space $\mathbb{RP}^3$

Are there in $(\mathbb{C}[x,y,z]/(x^3+y^3+z^3))_{x}$ exactly $12$ lines?

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