Question

Rank of projection matrix $P$

score 4.3k · Answer 1 · 2018-05-05 14:54:57

4.3k

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Rank of projection matrix $P$

Published on 05 May 2018 - 14:54

score 812 · Answer 2 · 2018-05-06 14:58:32

812

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$A=\frac{xx^T}{x^Tx}$.Find the dimension of the vector space $[y \in \mathbb{R^3}:Ay=0]$

Published on 06 May 2018 - 14:58

score 74 · Answer 3 · 2018-05-06 21:38:43

74

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If $A$ is $k\times l$ and $B$ is $l\times k$, $l\geq k$ and full-rank, must $AB$ have full-rank?

Published on 06 May 2018 - 21:38

score 38 · Answer 4 · 2018-05-08 10:40:11

38

Views

To find the rank of a matrix:

Published on 08 May 2018 - 10:40

score 50 · Answer 5 · 2018-05-08 23:00:01

50

Views

Steep of the proof of embedding $\mathbb{RP}^{2}$ into $\mathbb{R}^{4}$

Published on 08 May 2018 - 23:00

score 103 · Answer 6 · 2026-03-24 22:08:48

103

Views

A confusion related to the rank of the matrix

Published on 24 Mar 2026 - 22:08

score 85 · Answer 7 · 2018-05-09 05:09:19

85

Views

How to get the linear combination of the rows that result in Identity matrix?

Published on 09 May 2018 - 5:09

score 222 · Answer 8 · 2018-05-09 05:12:34

222

Views

rank and determinant of system of quadratic equations

Published on 09 May 2018 - 5:12

score 121 · Answer 9 · 2026-03-25 06:01:37

121

Views

When to break a matrix into low rank and diagonal component?

Published on 25 Mar 2026 - 6:01

score 303 · Answer 10 · 2018-05-09 23:38:50

303

Views

Why does this non-linear function make the matrix rank arbitrarily large?

Published on 09 May 2018 - 23:38

score 605 · Answer 11 · 2018-05-10 10:47:56

605

Views

Obtain (or close to) Identity matrix by multiplying two vectors such as: $D * (C)^H = I$

Published on 10 May 2018 - 10:47

score 1.4k · Answer 12 · 2018-05-11 02:01:55

1.4k

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eigenvalues of "diagonal matrix $+$ rank one matrix"

Published on 11 May 2018 - 2:01

score 4k · Answer 13 · 2018-05-11 09:06:25

4k

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Proof any five points determine a conic

Published on 11 May 2018 - 9:06

score 33 · Answer 14 · 2018-05-12 10:44:37

33

Views

Condition for rank to be 2.

Published on 12 May 2018 - 10:44

score 503 · Answer 15 · 2018-05-13 08:37:05

503

Views

How to show that matrix over $\mathbb{F}_2^{m \times n}$ is full rank $\iff$ it has square invertible submatrix $\in \mathbb{F}_2^{m \times m}$?

Published on 13 May 2018 - 8:37

List Question

Rank of projection matrix $P$

$A=\frac{xx^T}{x^Tx}$.Find the dimension of the vector space $[y \in \mathbb{R^3}:Ay=0]$

If $A$ is $k\times l$ and $B$ is $l\times k$, $l\geq k$ and full-rank, must $AB$ have full-rank?

To find the rank of a matrix:

Steep of the proof of embedding $\mathbb{RP}^{2}$ into $\mathbb{R}^{4}$

A confusion related to the rank of the matrix

How to get the linear combination of the rows that result in Identity matrix?

rank and determinant of system of quadratic equations

When to break a matrix into low rank and diagonal component?

Why does this non-linear function make the matrix rank arbitrarily large?

Obtain (or close to) Identity matrix by multiplying two vectors such as: $D * (C)^H = I$

eigenvalues of "diagonal matrix $+$ rank one matrix"

Proof any five points determine a conic

Condition for rank to be 2.

How to show that matrix over $\mathbb{F}_2^{m \times n}$ is full rank $\iff$ it has square invertible submatrix $\in \mathbb{F}_2^{m \times m}$?

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