List questions from matrix-equations

Published on 24 Apr 2026 - 3:47

49

Views

Is there a matrix $A \in \mathbb{Q}^{n \times n}$ such that $P(A)=\mathbf{0}$, where $P$ is a monic polynomial with rational coefficients?

Published on 14 Apr 2026 - 21:51

266

Views

Consistency of linear equations in 3 variables

Published on 14 Apr 2026 - 7:12

48

Views

Determinant of sandwiched square matrix

Published on 14 Apr 2026 - 12:41

27

Views

Matrix math in the presence of infinities

Published on 24 Apr 2026 - 3:51

402

Views

How does matrix multiplication work when you have two parenthesis of two calculations?

Published on 11 Apr 2026 - 23:01

59

Views

Max of a matrix and the sum of matrices

Published on 24 Apr 2026 - 3:52

156

Views

Solving for $U$,$\Sigma$ and $V$ in SVD of a matrix

Published on 13 Apr 2026 - 23:01

115

Views

If invertible matrices $A$, $B$ satisfy $AB=cBA$, then $c^n=1$

Published on 15 Apr 2026 - 16:19

140

Views

Finding a matrix to force a part of another matrix to be with null trace

Published on 24 Apr 2026 - 5:18

72

Views

Reason behind the condition for multiplication of matrices

Published on 16 Apr 2026 - 22:49

239

Views

Argmin operation on loss function of a matrix

Published on 25 Mar 2026 - 1:22

86

Views

Eigenvalues and eigenvectors for time-periodic differential operator

Published on 09 Apr 2026 - 5:31

137

Views

How does one see whether to use a right- or left-side multiplication in a matrix equation?

Published on 12 Apr 2026 - 21:51

213

Views

Probability limit of ridge estimator

Published on 11 Apr 2026 - 10:25

List Question

Why do I get different answers from this matrix equation?

Is there a matrix $A \in \mathbb{Q}^{n \times n}$ such that $P(A)=\mathbf{0}$, where $P$ is a monic polynomial with rational coefficients?

Consistency of linear equations in 3 variables

Determinant of sandwiched square matrix

Matrix math in the presence of infinities

How does matrix multiplication work when you have two parenthesis of two calculations?

Max of a matrix and the sum of matrices

Solving for $U$,$\Sigma$ and $V$ in SVD of a matrix

If invertible matrices $A$, $B$ satisfy $AB=cBA$, then $c^n=1$

Finding a matrix to force a part of another matrix to be with null trace

Reason behind the condition for multiplication of matrices

Argmin operation on loss function of a matrix

Eigenvalues and eigenvectors for time-periodic differential operator

How does one see whether to use a right- or left-side multiplication in a matrix equation?

Probability limit of ridge estimator

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