List questions from symmetric-matrices

Published on 26 Mar 2026 - 9:40

476

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Positive definiteness of a symmetric matrix

Published on 27 Mar 2026 - 5:38

1000

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For symmetric $A$, show that $\lVert A \rVert_2 \leq \lVert A \rVert_\infty$

Published on 25 Mar 2026 - 7:48

1.3k

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What is the relation between "inner product" and "metric"?

Published on 15 Jan 2020 - 2:33

114

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Eigenvalues of matrix $(A)_{nm} = e^{i\phi |n-m|}$

Published on 25 Mar 2026 - 3:34

55

Views

Maximum value of $A-\lambda P_v \succeq 0$, where $A$ is a positive symmetric matrix and $P_v$ is a projection onto a unit vector

Published on 20 Jan 2020 - 12:11

1k

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Estimation of the spectral condition using the Gerschgorin circle theorem

Published on 25 Mar 2026 - 8:07

204

Views

Characteristic polynomial of a matrix — algorithm

Published on 25 Mar 2026 - 4:35

123

Views

Dimension of null space of symmetric binary matrix

Published on 24 Jan 2020 - 15:40

39

Views

Proof of, or constraints for, a matrix to be positive semidefinite

Published on 26 Mar 2026 - 9:42

404

Views

Minimize a quadratic form

Published on 27 Mar 2026 - 0:00

63

Views

Symmetric matrices in quadratic forms

Published on 28 Mar 2026 - 2:03

729

Views

Non-diagonal Elements of Positive Definite Matrix

Published on 27 Mar 2026 - 8:41

45

Views

Questions about a linear mapping from $\mathbb{R^4}\rightarrow{}\mathbb{R^4}$

Published on 28 Jan 2020 - 10:35

161

Views

How to define an antidiagonal positive definite matrix with a given structure?

Published on 26 Mar 2026 - 9:26

List Question

Find matrix $B$ such that $B B^\top \approx A$

Positive definiteness of a symmetric matrix

For symmetric $A$, show that $\lVert A \rVert_2 \leq \lVert A \rVert_\infty$

What is the relation between "inner product" and "metric"?

Eigenvalues of matrix $(A)_{nm} = e^{i\phi |n-m|}$

Maximum value of $A-\lambda P_v \succeq 0$, where $A$ is a positive symmetric matrix and $P_v$ is a projection onto a unit vector

Estimation of the spectral condition using the Gerschgorin circle theorem

Characteristic polynomial of a matrix — algorithm

Dimension of null space of symmetric binary matrix

Proof of, or constraints for, a matrix to be positive semidefinite

Minimize a quadratic form

Symmetric matrices in quadratic forms

Non-diagonal Elements of Positive Definite Matrix

Questions about a linear mapping from $\mathbb{R^4}\rightarrow{}\mathbb{R^4}$

How to define an antidiagonal positive definite matrix with a given structure?

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