List questions from matrix-equations

Published on 25 Mar 2026 - 16:13

190

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Spheres and orthogonal matrices as spaces of solutions to matrix equations

Published on 22 Mar 2026 - 19:54

44

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Matrices $A$ and $B$ so that $AB=I$ but $BA \ne I$

Published on 02 Aug 2018 - 1:33

31

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Existence of Signal Distributions Given Likelihood Ratios

Published on 03 Aug 2018 - 19:11

79

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Exisitence of the Solution to the Linear Matrix Inequality

Published on 20 Mar 2026 - 11:02

75

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Sparse matrix computational difficulties

Published on 22 Mar 2026 - 12:14

144

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Given a square matrix, how to find the transformation to a rational canonical form?

Published on 25 Mar 2026 - 16:02

96

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Show that there is no $2 \times 2$ matrix $B$ such that $B^2 = A$

Published on 06 Aug 2018 - 18:42

203

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Solve matrix equation $\mathbf{X} + \mathbf{X}\mathbf{M} + \mathbf{M}\mathbf{X} = \mathbf{C}$

Published on 07 Aug 2018 - 7:59

396

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Showing that the matrix $A+I$ is invertible

Published on 07 Aug 2018 - 12:29

139

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Show a matrix is anti-symmetric matrix

Published on 07 Aug 2018 - 13:10

451

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Solve linear equations system with only positive coefficients in solution

Published on 26 Mar 2026 - 0:58

262

Views

Differentiate $\sum_{ij}[\sum_{k}\log \frac{W_{ik}H_{kj}}{\alpha} + \sum_{k}W_{ik}H_{kj}] + \sum_{kj}[\frac{\beta}{2} \vert H_{kj} \vert^{2}] = 0$

Published on 26 Mar 2026 - 1:04

175

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The inverse of $(A+A^{-1})$ when $A=A^{-1}$

Published on 14 Aug 2018 - 11:43

28

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Finding solution of matrix equation system $XA_iY=B_i$ with respect to $X$ and $Y$

Published on 26 Mar 2026 - 1:03

List Question

System of equations involving rank-1 matrices

Spheres and orthogonal matrices as spaces of solutions to matrix equations

Matrices $A$ and $B$ so that $AB=I$ but $BA \ne I$

Existence of Signal Distributions Given Likelihood Ratios

Exisitence of the Solution to the Linear Matrix Inequality

Sparse matrix computational difficulties

Given a square matrix, how to find the transformation to a rational canonical form?

Show that there is no $2 \times 2$ matrix $B$ such that $B^2 = A$

Solve matrix equation $\mathbf{X} + \mathbf{X}\mathbf{M} + \mathbf{M}\mathbf{X} = \mathbf{C}$

Showing that the matrix $A+I$ is invertible

Show a matrix is anti-symmetric matrix

Solve linear equations system with only positive coefficients in solution

Differentiate $\sum_{ij}[\sum_{k}\log \frac{W_{ik}H_{kj}}{\alpha} + \sum_{k}W_{ik}H_{kj}] + \sum_{kj}[\frac{\beta}{2} \vert H_{kj} \vert^{2}] = 0$

The inverse of $(A+A^{-1})$ when $A=A^{-1}$

Finding solution of matrix equation system $XA_iY=B_i$ with respect to $X$ and $Y$

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