List questions from matrices

Published on 21 Apr 2026 - 12:11

109

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Why ${(2S)}^{-1} - {(2S)}^{-1}({I + 4S})^{-1} =2\times({I + 4S})^{-1}$

Published on 17 Apr 2026 - 7:10

387

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Continuous analogy of the matrix inversion

Published on 11 Apr 2026 - 6:58

70

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Finding an unequal determinant of a squared matrix

Published on 11 Apr 2026 - 22:38

1.5k

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$\hat{Y} = X^T\hat{\beta}$ Matrix Dimension For Linear Regression Coefficients $\beta$

Published on 15 Apr 2026 - 23:03

822

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All possible binary matrices with some properties

Published on 15 Apr 2026 - 10:48

1.1k

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Green's functions and matrix inverses

Published on 11 Apr 2026 - 19:40

47

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Probability of matrix equality under modulo (pattern matching)

Published on 12 Apr 2026 - 19:11

220

Views

How to solve the quadratic matrix equation $A = BC B^H$?

Published on 12 Apr 2026 - 5:14

784

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Understanding the low-rank manifold

Published on 11 Apr 2026 - 20:00

109

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Identifying nilpotent $2\times 2$ matrices with a quadratic cone

Published on 14 Apr 2026 - 9:11

7.1k

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eigenvalues of $AA^T$ and $A^TA$

Published on 14 Apr 2026 - 3:37

3.3k

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Second Derivative with respect to a Matrix

Published on 18 Apr 2026 - 14:26

78

Views

Are norms of solutions to two Lyapunov matrix equations comparable?

Published on 22 Apr 2026 - 17:38

798

Views

Solution of non-invertible matrix equation

Published on 10 Apr 2026 - 23:03

List Question

Finding the determinant of a $2\times 2$ matrix

Why ${(2S)}^{-1} - {(2S)}^{-1}({I + 4S})^{-1} =2\times({I + 4S})^{-1}$

Continuous analogy of the matrix inversion

Finding an unequal determinant of a squared matrix

$\hat{Y} = X^T\hat{\beta}$ Matrix Dimension For Linear Regression Coefficients $\beta$

All possible binary matrices with some properties

Green's functions and matrix inverses

Probability of matrix equality under modulo (pattern matching)

How to solve the quadratic matrix equation $A = BC B^H$?

Understanding the low-rank manifold

Identifying nilpotent $2\times 2$ matrices with a quadratic cone

eigenvalues of $AA^T$ and $A^TA$

Second Derivative with respect to a Matrix

Are norms of solutions to two Lyapunov matrix equations comparable?

Solution of non-invertible matrix equation

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