Question

An inequality for positive definite matrix with trace 1

score 177 · Answer 1 · 2018-12-17 16:44:03

177

Views

An inequality for positive definite matrix with trace 1

Published on 17 Dec 2018 - 16:44

score 649 · Answer 2 · 2018-12-18 00:09:05

649

Views

Confusion about the uniqueness of the square root of a positive definite matrix

Published on 18 Dec 2018 - 0:09

score 142 · Answer 3 · 2018-12-20 03:05:57

142

Views

Is it true that $A^{T}P+PA>0$ for an unstable matrix $A$ and a positive definite $P$?

Published on 20 Dec 2018 - 3:05

score 425 · Answer 4 · 2018-12-20 12:01:58

425

Views

A closed-form formula for the derivative of the matrix absolute value

Published on 20 Dec 2018 - 12:01

score 1k · Answer 5 · 2018-12-20 21:42:45

1k

Views

How can we decompose the identity matrix given a set of orthonormal vectors?

Published on 20 Dec 2018 - 21:42

score 364 · Answer 6 · 2018-12-26 15:15:09

364

Views

A question about the symmetric positive definite matrix A and $D^{-1/2}AD^{-1/2}$

Published on 26 Dec 2018 - 15:15

score 118 · Answer 7 · 2026-03-22 17:30:32

118

Views

Are all symplectic $(0,1)$-matrices lower/upper block-triangular?

Published on 22 Mar 2026 - 17:30

score 95 · Answer 8 · 2019-01-08 02:03:06

95

Views

if $A>0$, prove that there exists $x\in\{\pm1\}^n$, such that $(Ax)_i\neq0$ for all $i$

Published on 08 Jan 2019 - 2:03

score 710 · Answer 9 · 2019-01-08 16:03:32

710

Views

If I have a positive definite matrix X. How do i show that X$^2$ and X$^{-1}$ are also positive definite?

Published on 08 Jan 2019 - 16:03

score 79 · Answer 10 · 2019-01-09 08:03:28

79

Views

Definiteness of a submatrix of a positive definite matrix

Published on 09 Jan 2019 - 8:03

score 594 · Answer 11 · 2019-01-10 12:41:56

594

Views

If A is a symmetric square matrix. I need to show that it is positive definite only if all eigenvalues are positive.

Published on 10 Jan 2019 - 12:41

score 76 · Answer 12 · 2019-01-10 18:45:38

76

Views

Positive Definite Matrices and eigenvalues

Published on 10 Jan 2019 - 18:45

score 71 · Answer 13 · 2019-01-12 05:36:44

71

Views

On the entries of $LL^t$ where $L \in GL_n (\mathbb R)$ is lower triangular with positive diagonal entries

Published on 12 Jan 2019 - 5:36

score 363 · Answer 14 · 2019-01-13 15:05:28

363

Views

Is the following matrix positive definite?

Published on 13 Jan 2019 - 15:05

score 40 · Answer 15 · 2026-03-25 09:53:51

40

Views

Definiteness of matrix after Woodbury inversion.

Published on 25 Mar 2026 - 9:53

List Question

An inequality for positive definite matrix with trace 1

Confusion about the uniqueness of the square root of a positive definite matrix

Is it true that $A^{T}P+PA>0$ for an unstable matrix $A$ and a positive definite $P$?

A closed-form formula for the derivative of the matrix absolute value

How can we decompose the identity matrix given a set of orthonormal vectors?

A question about the symmetric positive definite matrix A and $D^{-1/2}AD^{-1/2}$

Are all symplectic $(0,1)$-matrices lower/upper block-triangular?

if $A>0$, prove that there exists $x\in\{\pm1\}^n$, such that $(Ax)_i\neq0$ for all $i$

If I have a positive definite matrix X. How do i show that X$^2$ and X$^{-1}$ are also positive definite?

Definiteness of a submatrix of a positive definite matrix

If A is a symmetric square matrix. I need to show that it is positive definite only if all eigenvalues are positive.

Positive Definite Matrices and eigenvalues

On the entries of $LL^t$ where $L \in GL_n (\mathbb R)$ is lower triangular with positive diagonal entries

Is the following matrix positive definite?

Definiteness of matrix after Woodbury inversion.

Trending Questions

Popular # Hahtags

Popular Questions