List questions from matrix-decomposition

Published on 31 Jul 2015 - 16:45

63

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Question on matrices

Published on 29 Mar 2026 - 20:47

5.7k

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Why is the largest element of symmetric, positive semidefinite matrix on the diagonal?

Published on 25 Mar 2026 - 19:05

698

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How to determine positive or negative definite of a bordered Hessian ?

Published on 03 Aug 2015 - 22:24

54

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How can I show that and $n\times{n}$ matrix of the form in the description has a determinant of zero for $n>2$?

Published on 04 Aug 2015 - 2:59

84

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Decomposing a matrix as the product of rotations

Published on 04 Aug 2015 - 20:23

824

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Proving that $L_{22}L_{22}^T=S$ is the Schur complement of a Cholesky factorization

Published on 25 Mar 2026 - 12:54

1.5k

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PCA produces sinusoids — what is the underlying cause?

Published on 25 Mar 2026 - 23:37

898

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LU decomposition for cyclic tridiagonal matrices

Published on 10 Aug 2015 - 13:58

49

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Positive semi-definite in Linear model

Published on 12 Aug 2015 - 19:32

1.8k

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Can I go from the LU factorization of a symmetric matrix to its Cholesky factorization, without starting over?

Published on 25 Mar 2026 - 12:34

329

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Help with Gram-Schmidt Orthogonalization

Published on 13 Aug 2015 - 12:07

2.6k

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QR Decomposition results in eigen library differs from Matlab

Published on 13 Aug 2015 - 20:30

416

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Spectral decomposition of idempotent matrix

Published on 16 Aug 2015 - 6:34

2.1k

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LU-factorization: why can't I get a unit lower triangular matrix?

Published on 25 Mar 2026 - 12:30

List Question

Properties of matrices $M=UDU^$ with $UU^=Id$

Question on matrices

Why is the largest element of symmetric, positive semidefinite matrix on the diagonal?

How to determine positive or negative definite of a bordered Hessian ?

How can I show that and $n\times{n}$ matrix of the form in the description has a determinant of zero for $n>2$?

Decomposing a matrix as the product of rotations

Proving that $L_{22}L_{22}^T=S$ is the Schur complement of a Cholesky factorization

PCA produces sinusoids — what is the underlying cause?

LU decomposition for cyclic tridiagonal matrices

Positive semi-definite in Linear model

Can I go from the LU factorization of a symmetric matrix to its Cholesky factorization, without starting over?

Help with Gram-Schmidt Orthogonalization

QR Decomposition results in eigen library differs from Matlab

Spectral decomposition of idempotent matrix

LU-factorization: why can't I get a unit lower triangular matrix?

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