Question

If the row space and the column space of an n x n matrix A coinside, then matrix A is invertible.

score 450 · Answer 1 · 2017-10-24 16:30:28

450

Views

If the row space and the column space of an n x n matrix A coinside, then matrix A is invertible.

Published on 24 Oct 2017 - 16:30

score 941 · Answer 2 · 2017-10-24 23:16:37

941

Views

Difference between left and right inverse of NON-SQUARE Matrix.

Published on 24 Oct 2017 - 23:16

score 683 · Answer 3 · 2017-10-26 04:12:56

683

Views

Finding the Covariance Matrix of Two Random Vectors, Given Their Covariance Matrices

Published on 26 Oct 2017 - 4:12

score 100 · Answer 4 · 2017-10-27 22:31:54

100

Views

Finding the closed form of the product $\prod_{i = 1}^{\infty} (1 - 1/q^{i}) $.

Published on 27 Oct 2017 - 22:31

score 715 · Answer 5 · 2026-02-23 22:28:40

715

Views

How to model a markov chain that randomly switches between two transition matrices?

Published on 23 Feb 2026 - 22:28

score 583 · Answer 6 · 2017-11-22 02:01:19

583

Views

Permutation Matrix P and Diagonal Entries of PA

Published on 22 Nov 2017 - 2:01

score 64 · Answer 7 · 2017-11-26 15:04:31

64

Views

Simulation of level spacing of Gaussian Unitary Matrix

Published on 26 Nov 2017 - 15:04

score 428 · Answer 8 · 2017-11-27 08:15:26

428

Views

Distributions of positive definite matrices other than Wishart?

Published on 27 Nov 2017 - 8:15

score 119 · Answer 9 · 2017-11-29 08:35:44

119

Views

Random matrix with dependent entries

Published on 29 Nov 2017 - 8:35

score 3.1k · Answer 10 · 2017-12-01 02:50:18

3.1k

Views

Probability that a random matrix will have full column rank?

Published on 01 Dec 2017 - 2:50

score 107 · Answer 11 · 2017-12-05 14:31:40

107

Views

Expectation of $\frac{\mathbf{x} \mathbf{x}^{\rm{T}}}{\| \mathbf{x} \|^{2}}$ for $\mathbf{x} \sim \mathcal{N}(\boldsymbol{\mu},\boldsymbol{\Sigma})$

Published on 05 Dec 2017 - 14:31

score 80 · Answer 12 · 2017-12-07 10:06:10

80

Views

Proving that $f(x_1,x_2\ldots x_n)=\frac{1}{n}\sum_{i}x_i^2 - \frac{1}{n^2}\sum_{i\neq j}\ln|x_i-x_j|\geq 4$

Published on 07 Dec 2017 - 10:06

score 172 · Answer 13 · 2017-12-10 08:27:28

172

Views

Concept behind elementary operation on matrix

Published on 10 Dec 2017 - 8:27

score 423 · Answer 14 · 2017-12-10 12:20:23

423

Views

Probability that leading Eigenvalue is real

Published on 10 Dec 2017 - 12:20

score 816 · Answer 15 · 2017-12-15 10:12:07

816

Views

Does smallest singular value has anything to do with matrix norm?

Published on 15 Dec 2017 - 10:12

List Question

If the row space and the column space of an n x n matrix A coinside, then matrix A is invertible.

Difference between left and right inverse of NON-SQUARE Matrix.

Finding the Covariance Matrix of Two Random Vectors, Given Their Covariance Matrices

Finding the closed form of the product $\prod_{i = 1}^{\infty} (1 - 1/q^{i}) $.

How to model a markov chain that randomly switches between two transition matrices?

Permutation Matrix P and Diagonal Entries of PA

Simulation of level spacing of Gaussian Unitary Matrix

Distributions of positive definite matrices other than Wishart?

Random matrix with dependent entries

Probability that a random matrix will have full column rank?

Expectation of $\frac{\mathbf{x} \mathbf{x}^{\rm{T}}}{\| \mathbf{x} \|^{2}}$ for $\mathbf{x} \sim \mathcal{N}(\boldsymbol{\mu},\boldsymbol{\Sigma})$

Proving that $f(x_1,x_2\ldots x_n)=\frac{1}{n}\sum_{i}x_i^2 - \frac{1}{n^2}\sum_{i\neq j}\ln|x_i-x_j|\geq 4$

Concept behind elementary operation on matrix

Probability that leading Eigenvalue is real

Does smallest singular value has anything to do with matrix norm?

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