Question

Elementary geometry problem regarding trapezoid

score 137 · Answer 1 · 2017-12-20 12:24:13

137

Views

Elementary geometry problem regarding trapezoid

Published on 20 Dec 2017 - 12:24

score 81 · Answer 2 · 2017-12-22 07:18:14

81

Views

Projectivity on a line and harmonic groups

Published on 22 Dec 2017 - 7:18

score 50 · Answer 3 · 2026-02-23 10:17:35

50

Views

Choice of correspondence points

Published on 23 Feb 2026 - 10:17

score 308 · Answer 4 · 2026-03-26 14:35:07

308

Views

Two homogeneous polynomial of the same degree define the same projective hypersurface if and only if they are proportional

Published on 26 Mar 2026 - 14:35

score 201 · Answer 5 · 2026-04-02 10:33:02

201

Views

Cross-ratio of Conics on a pencil of conics

Published on 02 Apr 2026 - 10:33

score 243 · Answer 6 · 2026-03-31 12:43:25

243

Views

Stuck in deriving decomposition of essential matrix(background in computer vision needed)

Published on 31 Mar 2026 - 12:43

score 45 · Answer 7 · 2026-03-31 12:48:19

45

Views

Why $Vdiag(-1,-1,1)V^T$ represents a rotation through $180^\circ$ about $u_3$ provided that some matrix $E=Udiag(1,1,0)V^T$

Published on 31 Mar 2026 - 12:48

score 124 · Answer 8 · 2026-03-26 17:51:49

124

Views

Camera projection (Projective Geometry - Computer Vision)

Published on 26 Mar 2026 - 17:51

score 183 · Answer 9 · 2026-04-01 14:28:45

183

Views

Formal definition of homogenous coordinates

Published on 01 Apr 2026 - 14:28

score 2.7k · Answer 10 · 2017-12-30 17:36:38

2.7k

Views

Equation of a 2D parabola in 3D, and proving that the projection on to basis planes are also parabolas

Published on 30 Dec 2017 - 17:36

score 685 · Answer 11 · 2026-04-01 14:29:48

685

Views

Understanding central projection in projective geometry

Published on 01 Apr 2026 - 14:29

score 628 · Answer 12 · 2026-03-30 02:48:00

628

Views

Write lines as affine combinations of points

Published on 30 Mar 2026 - 2:48

score 154 · Answer 13 · 2026-04-01 14:30:30

154

Views

Projective plane and points in $\mathbb{A}^2 = \{z=1\}$

Published on 01 Apr 2026 - 14:30

score 72 · Answer 14 · 2026-03-29 19:14:28

72

Views

How to orthogonally project to boundary of the ball $\mathcal{B}_r(0)\triangleq\{Y\in\mathbb{R}^{n\times n}:\|Y\|_2<r\} $?

Published on 29 Mar 2026 - 19:14

score 467 · Answer 15 · 2026-03-30 02:46:40

467

Views

Affine and projective geometry properties and differences

Published on 30 Mar 2026 - 2:46

List Question

Elementary geometry problem regarding trapezoid

Projectivity on a line and harmonic groups

Choice of correspondence points

Two homogeneous polynomial of the same degree define the same projective hypersurface if and only if they are proportional

Cross-ratio of Conics on a pencil of conics

Stuck in deriving decomposition of essential matrix(background in computer vision needed)

Why $Vdiag(-1,-1,1)V^T$ represents a rotation through $180^\circ$ about $u_3$ provided that some matrix $E=Udiag(1,1,0)V^T$

Camera projection (Projective Geometry - Computer Vision)

Formal definition of homogenous coordinates

Equation of a 2D parabola in 3D, and proving that the projection on to basis planes are also parabolas

Understanding central projection in projective geometry

Write lines as affine combinations of points

Projective plane and points in $\mathbb{A}^2 = \{z=1\}$

How to orthogonally project to boundary of the ball $\mathcal{B}_r(0)\triangleq\{Y\in\mathbb{R}^{n\times n}:\|Y\|_2<r\} $?

Affine and projective geometry properties and differences

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