List questions from matrix-decomposition

Published on 23 Oct 2016 - 17:32

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Strategies for creating triangular matrices?

Published on 25 Mar 2026 - 3:24

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Writing a matrix as a product of elementary matrices.

Published on 26 Oct 2016 - 3:01

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singular values of block positive matrices

Published on 26 Oct 2016 - 21:02

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Matrices that Differ only in Diagonal of Decomposition

Published on 27 Oct 2016 - 19:53

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Generalization of QR factorization

Published on 25 Mar 2026 - 14:20

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Decomposition of a matrix into a skew symmetric matrix and "positive definite" symmetric matrix

Published on 31 Oct 2016 - 8:21

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Checking positive semidefiniteness in MATLAB

Published on 27 Mar 2026 - 4:14

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Why is $(\hat{X}^\top \hat{X} + \lambda n I)^{-1}\hat{X}^T \hat{y} = \hat{X}^T (\hat{X} \hat{X}^T + \lambda n I)^{-1} \hat{y}$ true?

Published on 27 Mar 2026 - 20:31

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Recover vector $x$ from rank-$1$ matrix $Q=xx^H$

Published on 23 Feb 2026 - 6:59

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Is there anything like upper tridiagonal matrix? How to find the determinant of such a matrix?

Published on 07 Nov 2016 - 15:39

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Solving for the trace of an unknown matrix in a linear matrix equation

Published on 29 Mar 2026 - 17:26

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Matrix Analysis textbook recommendation.

Published on 09 Nov 2016 - 18:38

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Doolittle transformation is non-unique for singular matrices

Published on 12 Nov 2016 - 12:39

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Minimal rank of a real algebra

Published on 27 Mar 2026 - 22:31

List Question

Is this an abuse of the quotient rule?

Strategies for creating triangular matrices?

Writing a matrix as a product of elementary matrices.

singular values of block positive matrices

Matrices that Differ only in Diagonal of Decomposition

Generalization of QR factorization

Decomposition of a matrix into a skew symmetric matrix and "positive definite" symmetric matrix

Checking positive semidefiniteness in MATLAB

Why is $(\hat{X}^\top \hat{X} + \lambda n I)^{-1}\hat{X}^T \hat{y} = \hat{X}^T (\hat{X} \hat{X}^T + \lambda n I)^{-1} \hat{y}$ true?

Recover vector $x$ from rank-$1$ matrix $Q=xx^H$

Is there anything like upper tridiagonal matrix? How to find the determinant of such a matrix?

Solving for the trace of an unknown matrix in a linear matrix equation

Matrix Analysis textbook recommendation.

Doolittle transformation is non-unique for singular matrices

Minimal rank of a real algebra

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