List questions from matrices

Published on 16 Apr 2026 - 1:30

44

Views

Linear independency in a matrix

Published on 17 Apr 2026 - 8:51

586

Views

When is the exponential map between matrices injective?

Published on 14 Apr 2026 - 11:21

201

Views

A particular subset of row-orthogonal matrices

Published on 15 Apr 2026 - 13:13

45

Views

Constructing matrix with odd constraints

Published on 14 Apr 2026 - 12:31

50

Views

Deriving bounds on a parameter for the following determinant inequality

Published on 14 Apr 2026 - 17:33

445

Views

Derivative of $A^\top A$

Published on 11 Apr 2026 - 14:23

1.4k

Views

Functions of diagonal matrices

Published on 13 Apr 2026 - 8:23

78

Views

System of equations - solution for a matrix

Published on 10 Apr 2026 - 2:12

40

Views

Vector multiplications

Published on 15 Apr 2026 - 23:36

2k

Views

Proving that the product of two invertible matrices is also invertible, without determinants

Published on 15 Apr 2026 - 22:48

743

Views

Square matrix with rational coefficients having $k$-th root

Published on 14 Apr 2026 - 6:17

2.1k

Views

Prove that $-1$ is an eigenvalue of an orthogonal matrix $A \in M_{4 \times 4} (\Bbb R)$ with $\det(A)=-1$

Published on 12 Apr 2026 - 19:24

77

Views

Is there an open ball around the $0$ matrix such that the eigenvalues contains a cube?

Published on 15 Apr 2026 - 13:49

104

Views

What is the eigenvalue perturbation if a row-column pair is changed?

Published on 12 Apr 2026 - 7:55

List Question

Is the set of $n \times n$ normal matrices a subspaces of $M_n(\mathbb{C})$ over $\mathbb{C} $?

Linear independency in a matrix

When is the exponential map between matrices injective?

A particular subset of row-orthogonal matrices

Constructing matrix with odd constraints

Deriving bounds on a parameter for the following determinant inequality

Derivative of $A^\top A$

Functions of diagonal matrices

System of equations - solution for a matrix

Vector multiplications

Proving that the product of two invertible matrices is also invertible, without determinants

Square matrix with rational coefficients having $k$-th root

Prove that $-1$ is an eigenvalue of an orthogonal matrix $A \in M_{4 \times 4} (\Bbb R)$ with $\det(A)=-1$

Is there an open ball around the $0$ matrix such that the eigenvalues contains a cube?

What is the eigenvalue perturbation if a row-column pair is changed?

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