Question

Is the infimum of the product of the coordinates of a lattice positive?

score 36 · Answer 1 · 2026-03-29 22:33:48

36

Views

Is the infimum of the product of the coordinates of a lattice positive?

Published on 29 Mar 2026 - 22:33

score 392 · Answer 2 · 2026-04-09 17:13:37

392

Views

which is the direct and inverse transformation matrix?

Published on 09 Apr 2026 - 17:13

score 932 · Answer 3 · 2026-04-09 07:45:05

932

Views

If I know the rotation of a rigid body (Euler angle) in coordinate system A, how should I know this rotation represented in coordinate system B?

Published on 09 Apr 2026 - 7:45

score 139 · Answer 4 · 2021-07-12 17:43:40

139

Views

Origin shift in the complex plane

Published on 12 Jul 2021 - 17:43

score 58 · Answer 5 · 2021-07-13 12:51:54

58

Views

Prove that $\left(r^{2} \cos 2 \theta, r^{2} \sin 2 \theta\right)$ is on upper half-space

Published on 13 Jul 2021 - 12:51

score 307 · Answer 6 · 2026-04-11 09:54:14

307

Views

Negative Area of a Triangle

Published on 11 Apr 2026 - 9:54

score 38 · Answer 7 · 2021-07-16 11:37:53

38

Views

Vector solution to an angle bisector problem?

Published on 16 Jul 2021 - 11:37

score 107 · Answer 8 · 2026-04-11 00:55:48

107

Views

Curl twice the correct value

Published on 11 Apr 2026 - 0:55

score 32 · Answer 9 · 2026-04-10 17:17:15

32

Views

Must all solutions of the given partial differential equation be of a certain form relating to another equation?

Published on 10 Apr 2026 - 17:17

score 259 · Answer 10 · 2026-04-11 08:10:32

259

Views

Correlation between number of paths and Catalan numbers.

Published on 11 Apr 2026 - 8:10

score 221 · Answer 11 · 2026-04-11 21:53:53

221

Views

Line through two given skew lines and origin

Published on 11 Apr 2026 - 21:53

score 45 · Answer 12 · 2026-03-30 15:17:16

45

Views

Simplified determination of dihedral angles of three vectors (is it correct?)

Published on 30 Mar 2026 - 15:17

score 548 · Answer 13 · 2026-04-11 17:50:43

548

Views

Why is it sufficient to set the polar angle between 0 and 180 degrees in a spherical coordinate system?

Published on 11 Apr 2026 - 17:50

score 152 · Answer 14 · 2026-04-09 14:59:40

152

Views

Surfaces with Planar Coordinate Curves and Orthogonal Carrier Planes

Published on 09 Apr 2026 - 14:59

score 1k · Answer 15 · 2026-03-31 20:03:46

1k

Views

Check if 3D Point is inside square based pyramid

Published on 31 Mar 2026 - 20:03

List Question

Is the infimum of the product of the coordinates of a lattice positive?

which is the direct and inverse transformation matrix?

If I know the rotation of a rigid body (Euler angle) in coordinate system A, how should I know this rotation represented in coordinate system B?

Origin shift in the complex plane

Prove that $\left(r^{2} \cos 2 \theta, r^{2} \sin 2 \theta\right)$ is on upper half-space

Negative Area of a Triangle

Vector solution to an angle bisector problem?

Curl twice the correct value

Must all solutions of the given partial differential equation be of a certain form relating to another equation?

Correlation between number of paths and Catalan numbers.

Line through two given skew lines and origin

Simplified determination of dihedral angles of three vectors (is it correct?)

Why is it sufficient to set the polar angle between 0 and 180 degrees in a spherical coordinate system?

Surfaces with Planar Coordinate Curves and Orthogonal Carrier Planes

Check if 3D Point is inside square based pyramid

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