List questions from matrix-decomposition

Published on 29 Mar 2026 - 13:39

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How to compute QR decomposition of a product of matrices

Published on 26 Mar 2026 - 6:10

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What is the complexity when multiplying an mxn matrix by an nxm matrix?

Published on 04 Mar 2015 - 15:41

57

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Let $2 \times 2$ matrix $A=(2,-2,-2,5)$ Find a $2 \times 2$ matrix M such that $A=M^tM$

Published on 04 Mar 2015 - 15:51

135

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To what extent are the Jordan-Chevalley and Levi Decompositions compatible.

Published on 06 Mar 2015 - 16:44

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$LDL^T$ decompositon of a symmetric matrix and a matrix determinant expression for the lower triangular entries

Published on 31 Mar 2026 - 14:28

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Symmetric positive definite matrix and Cholesky decomposition

Published on 25 Mar 2026 - 11:19

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Cholesky, Inverse, and Determinant when updating the diagonal of a symmetric positive definite matrix

Published on 08 Mar 2015 - 23:36

122

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convolution and associativity

Published on 30 Mar 2026 - 5:30

141

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Name of the matrix transform $AA^*$ given A?

Published on 11 Mar 2015 - 20:04

101

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Eigen Decomposition

Published on 28 Mar 2026 - 22:37

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How to prove whether a matrix has rank $1$

Published on 01 Apr 2026 - 2:48

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Eigenvalues of $U^* diag(\lambda_1,\ldots,\lambda_n) U$, $U$ is tall and has orthogonal columns

Published on 18 Mar 2015 - 9:42

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zeros of $x^*Ax$, a quadratic form

Published on 31 Mar 2026 - 17:53

30

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Product of the LU Factorisation - Correct Formula?

Published on 20 Mar 2015 - 14:30

List Question

Singular value decomposition for matrices that are not square?

How to compute QR decomposition of a product of matrices

What is the complexity when multiplying an mxn matrix by an nxm matrix?

Let $2 \times 2$ matrix $A=(2,-2,-2,5)$ Find a $2 \times 2$ matrix M such that $A=M^tM$

To what extent are the Jordan-Chevalley and Levi Decompositions compatible.

$LDL^T$ decompositon of a symmetric matrix and a matrix determinant expression for the lower triangular entries

Symmetric positive definite matrix and Cholesky decomposition

Cholesky, Inverse, and Determinant when updating the diagonal of a symmetric positive definite matrix

convolution and associativity

Name of the matrix transform $AA^*$ given A?

Eigen Decomposition

How to prove whether a matrix has rank $1$

Eigenvalues of $U^* diag(\lambda_1,\ldots,\lambda_n) U$, $U$ is tall and has orthogonal columns

zeros of $x^*Ax$, a quadratic form

Product of the LU Factorisation - Correct Formula?

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