List questions from symmetric-matrices

Published on 24 Nov 2019 - 5:45

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Symmetric Positive Definite Matrix Plus Symmetric Matrix is again Positive Definite

Published on 27 Mar 2026 - 2:01

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Symmetrization of pentadiagonal matrices

Published on 22 Mar 2026 - 12:52

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What are the eigenvectors of a $3×3$ real symmetric matrix that admits $(1, 2, 3)^T$ and $(1, 1,−1)^T$ as eigenvectors.

Published on 26 Nov 2019 - 17:29

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Symmetric matrices with "interesting" spectra

Published on 26 Nov 2019 - 20:39

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Why is the matrix equal to its transpose?

Published on 27 Nov 2019 - 1:19

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Properties of the indices of the Kronecker product

Published on 25 Mar 2026 - 19:09

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Eigenvalue and Eigenvector of specific tridiagonal matrix

Published on 25 Mar 2026 - 5:05

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Eigenvalues of $A^T A$ when $\text{rank}(A) < n$

Published on 29 Nov 2019 - 3:38

93

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Special non-negative matrix decomposition

Published on 25 Mar 2026 - 3:05

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Singular values vs eigenvalues for positive definite.

Published on 27 Mar 2026 - 3:56

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eigenvectors of $A^2$ and $A$ if $A$ is positive definite.

Published on 27 Mar 2026 - 3:59

221

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What are the multiplication properties of symmetric, anti-symmetric, triangular and diagonal matrices

Published on 04 Dec 2019 - 13:43

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Condition for a Hermitian matrix to fulfill $H^\top = U \cdot H\cdot U$ for some symmetric unitary $U$.

Published on 27 Mar 2026 - 3:59

60

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Endomorphism of $S_n(\mathbf{R})$ such that $L(O^T S O) = O^T L(S) O$

Published on 25 Mar 2026 - 5:07

List Question

A problem regarding the rank of a symmetric matrix

Symmetric Positive Definite Matrix Plus Symmetric Matrix is again Positive Definite

Symmetrization of pentadiagonal matrices

What are the eigenvectors of a $3×3$ real symmetric matrix that admits $(1, 2, 3)^T$ and $(1, 1,−1)^T$ as eigenvectors.

Symmetric matrices with "interesting" spectra

Why is the matrix equal to its transpose?

Properties of the indices of the Kronecker product

Eigenvalue and Eigenvector of specific tridiagonal matrix

Eigenvalues of $A^T A$ when $\text{rank}(A) < n$

Special non-negative matrix decomposition

Singular values vs eigenvalues for positive definite.

eigenvectors of $A^2$ and $A$ if $A$ is positive definite.

What are the multiplication properties of symmetric, anti-symmetric, triangular and diagonal matrices

Condition for a Hermitian matrix to fulfill $H^\top = U \cdot H\cdot U$ for some symmetric unitary $U$.

Endomorphism of $S_n(\mathbf{R})$ such that $L(O^T S O) = O^T L(S) O$

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