Question

$\mathrm{rank} (AB)\leq \min\{\mathrm{rank}(A),\mathrm{rank}(B)\}$

score 124 · Answer 1 · 2026-04-16 06:40:41

124

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$\mathrm{rank} (AB)\leq \min\{\mathrm{rank}(A),\mathrm{rank}(B)\}$

Published on 16 Apr 2026 - 6:40

score 963 · Answer 2 · 2026-04-09 19:49:19

963

Views

Confusion about the phrase "passing through..." in geometry. In particular, does a plane "passing through" a line contain the line?

Published on 09 Apr 2026 - 19:49

score 52 · Answer 3 · 2026-04-16 21:14:02

52

Views

Find the length of vector b (vectors)

Published on 16 Apr 2026 - 21:14

score 127 · Answer 4 · 2026-04-13 23:25:59

127

Views

Vector that realizes a given slope

Published on 13 Apr 2026 - 23:25

score 115 · Answer 5 · 2026-04-13 02:15:52

115

Views

Area in a triangle divided by a segment that goes through the centroid.

Published on 13 Apr 2026 - 2:15

score 217 · Answer 6 · 2026-04-10 09:42:02

217

Views

How to derive divergence in polar coordinates?

Published on 10 Apr 2026 - 9:42

score 161 · Answer 7 · 2026-03-25 10:52:51

161

Views

Vector identity proof for dipole magnetic field derivation

Published on 25 Mar 2026 - 10:52

score 214 · Answer 8 · 2026-04-14 18:21:50

214

Views

Describe vectors v = [x , y] that are orthogonal to u = [a , b].

Published on 14 Apr 2026 - 18:21

score 110 · Answer 9 · 2026-04-17 00:48:12

110

Views

Gradient and Hessian of vector function

Published on 17 Apr 2026 - 0:48

score 955 · Answer 10 · 2026-04-14 03:49:58

955

Views

Find a parametric equation and an equation in vector form for the lines in $\mathbb{R}^2$

Published on 14 Apr 2026 - 3:49

score 102 · Answer 11 · 2026-04-16 07:48:47

102

Views

Formal name of vector identity

Published on 16 Apr 2026 - 7:48

score 1.1k · Answer 12 · 2026-04-15 04:24:48

1.1k

Views

If X is a characteristic vector of matrix A , then kX is also a character vector of A corresponding to the same characteristic value

Published on 15 Apr 2026 - 4:24

score 130 · Answer 13 · 2026-04-16 04:04:00

130

Views

Linearly independent vectors: columns, rows or both?

Published on 16 Apr 2026 - 4:04

score 40 · Answer 14 · 2026-04-12 16:04:16

40

Views

Interpreting two lines in 3-space

Published on 12 Apr 2026 - 16:04

score 66 · Answer 15 · 2026-04-16 05:48:43

66

Views

Complex valued equivalent of $\dot{x}(t) \perp x(t)$ when $\left|x(t)\right| = \mathrm{const}$

Published on 16 Apr 2026 - 5:48

List Question

$\mathrm{rank} (AB)\leq \min\{\mathrm{rank}(A),\mathrm{rank}(B)\}$

Confusion about the phrase "passing through..." in geometry. In particular, does a plane "passing through" a line contain the line?

Find the length of vector b (vectors)

Vector that realizes a given slope

Area in a triangle divided by a segment that goes through the centroid.

How to derive divergence in polar coordinates?

Vector identity proof for dipole magnetic field derivation

Describe vectors v = [x , y] that are orthogonal to u = [a , b].

Gradient and Hessian of vector function

Find a parametric equation and an equation in vector form for the lines in $\mathbb{R}^2$

Formal name of vector identity

If X is a characteristic vector of matrix A , then kX is also a character vector of A corresponding to the same characteristic value

Linearly independent vectors: columns, rows or both?

Interpreting two lines in 3-space

Complex valued equivalent of $\dot{x}(t) \perp x(t)$ when $\left|x(t)\right| = \mathrm{const}$

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