List questions from matrix-equations

Published on 13 Apr 2026 - 10:41

108

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Matrix equation $AX=B$

Published on 09 Apr 2026 - 10:36

579

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Let $A$ and $B$ be two $3 \times 3$ invertible matrices such that $A$ is an idempotent matrix. Then find $\det B$.

Published on 14 Apr 2026 - 18:20

80

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Finding $\alpha$ in $Ax=b$

Published on 08 Apr 2026 - 17:35

36

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Move eigenvalues in triangular Rayleigh quotient while keeping Krylov relation

Published on 14 Apr 2026 - 0:59

57

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Don't Row-equivalent, Inhomogeneous Systems of Linear Equations Have the Same Solution Sets?

Published on 15 Apr 2026 - 19:30

29

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Sparse matrix with only $-1$ outside the diagonal

Published on 12 Apr 2026 - 0:13

192

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Most efficient to solve $(I + L)x = b$ where $L$ is graph Laplacian

Published on 15 Apr 2026 - 7:16

58

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How do I solve this matrix equation? I am kinda confused about the sum with a scalar part

Published on 11 Apr 2026 - 13:50

116

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Solution to Linear Time-invariant Matrix ODE $\frac{d\mathbf{P}}{dt} = \mathbf{A}\mathbf{P} + \mathbf{B}$

Published on 15 Apr 2026 - 11:24

135

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if $2$ is root of equation $|A-xI|=0$ (where $A$ is non-singular matrix), $\frac{|A|}{2}$ root of equation $|B-xI|=0$ then $B$ can be

Published on 15 Apr 2026 - 2:15

131

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Possible Close-form solution for 2 dimensional $\frac{d\Sigma}{dt} = \mathbf{A}\Sigma + \Sigma \mathbf{A}^T + \mathbf{B}\mathbf{B}^T$

Published on 15 Apr 2026 - 11:21

55

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Finding the solution to a matrix differential equation

Published on 09 Apr 2026 - 16:16

63

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Solve matrix equations $AB=C$

Published on 15 Apr 2026 - 18:44

154

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Enforce symmetric positive definiteness on least-square matrix equation

Published on 12 Apr 2026 - 5:19

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Is there a known equation for max or min of a set?

Matrix equation $AX=B$

Let $A$ and $B$ be two $3 \times 3$ invertible matrices such that $A$ is an idempotent matrix. Then find $\det B$.

Finding $\alpha$ in $Ax=b$

Move eigenvalues in triangular Rayleigh quotient while keeping Krylov relation

Don't Row-equivalent, Inhomogeneous Systems of Linear Equations Have the Same Solution Sets?

Sparse matrix with only $-1$ outside the diagonal

Most efficient to solve $(I + L)x = b$ where $L$ is graph Laplacian

How do I solve this matrix equation? I am kinda confused about the sum with a scalar part

Solution to Linear Time-invariant Matrix ODE $\frac{d\mathbf{P}}{dt} = \mathbf{A}\mathbf{P} + \mathbf{B}$

if $2$ is root of equation $|A-xI|=0$ (where $A$ is non-singular matrix), $\frac{|A|}{2}$ root of equation $|B-xI|=0$ then $B$ can be

Possible Close-form solution for 2 dimensional $\frac{d\Sigma}{dt} = \mathbf{A}\Sigma + \Sigma \mathbf{A}^T + \mathbf{B}\mathbf{B}^T$

Finding the solution to a matrix differential equation

Solve matrix equations $AB=C$

Enforce symmetric positive definiteness on least-square matrix equation

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