Question

Is there a closed formula for the positive-definite matrix square root?

score 303 · Answer 1 · 2026-03-25 14:31:42

303

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Is there a closed formula for the positive-definite matrix square root?

Published on 25 Mar 2026 - 14:31

score 2.3k · Answer 2 · 2026-03-25 07:44:47

2.3k

Views

Does SVD give the best rank 1 approximation with respect to the Frobenius norm, L2 norm, or both?

Published on 25 Mar 2026 - 7:44

score 57 · Answer 3 · 2018-09-24 18:50:22

57

Views

Name for a matrix selecting one eigenvalue of an eigendecomposition

Published on 24 Sep 2018 - 18:50

score 119 · Answer 4 · 2018-09-27 11:31:53

119

Views

row operation proof for elementary matrix

Published on 27 Sep 2018 - 11:31

score 450 · Answer 5 · 2026-03-26 01:06:40

450

Views

Is a $2x2$ real matrix with complex eigenvalues upper triangular?

Published on 26 Mar 2026 - 1:06

score 44 · Answer 6 · 2018-10-03 16:35:53

44

Views

On a special decomposition of a $3\times 3$ matrix

Published on 03 Oct 2018 - 16:35

score 161 · Answer 7 · 2026-03-25 11:25:07

161

Views

Find Jordan Decomposition without calculating $\ker(A - \lambda E)$

Published on 25 Mar 2026 - 11:25

score 116 · Answer 8 · 2026-03-25 01:21:24

116

Views

Finding first nonzero element per row after Choleski decomposition

Published on 25 Mar 2026 - 1:21

score 401 · Answer 9 · 2018-10-06 16:11:32

401

Views

Is there way to simplify or improve efficiency of LU factorization algorithm?

Published on 06 Oct 2018 - 16:11

score 102 · Answer 10 · 2026-03-26 01:11:35

102

Views

Find rank of the special block symmetric and persymmetric matrix

Published on 26 Mar 2026 - 1:11

score 80 · Answer 11 · 2026-03-25 09:31:24

80

Views

Column Orderings in any QR/Matrix Factorization Method

Published on 25 Mar 2026 - 9:31

score 9.1k · Answer 12 · 2018-10-11 14:56:01

9.1k

Views

LU factorization of a nonsingular matrix exists if and only if all leading principal submatrices are nonsingular.

Published on 11 Oct 2018 - 14:56

score 434 · Answer 13 · 2026-03-25 09:27:30

434

Views

Summation of polynomial matrix multiplication in terms of vector outer product

Published on 25 Mar 2026 - 9:27

score 502 · Answer 14 · 2018-10-13 09:33:41

502

Views

Matrix filled with 0's and 1's

Published on 13 Oct 2018 - 9:33

score 313 · Answer 15 · 2018-10-16 19:02:48

313

Views

Write the derivative of the lower-triangular matrix $L(t)$ in terms of $L(t)$, $L^{-1}(t)$ and $\frac{d}{dt}A(t)$, where $A(t)=L(t)L^T(t)$

Published on 16 Oct 2018 - 19:02

List Question

Is there a closed formula for the positive-definite matrix square root?

Does SVD give the best rank 1 approximation with respect to the Frobenius norm, L2 norm, or both?

Name for a matrix selecting one eigenvalue of an eigendecomposition

row operation proof for elementary matrix

Is a $2x2$ real matrix with complex eigenvalues upper triangular?

On a special decomposition of a $3\times 3$ matrix

Find Jordan Decomposition without calculating $\ker(A - \lambda E)$

Finding first nonzero element per row after Choleski decomposition

Is there way to simplify or improve efficiency of LU factorization algorithm?

Find rank of the special block symmetric and persymmetric matrix

Column Orderings in any QR/Matrix Factorization Method

LU factorization of a nonsingular matrix exists if and only if all leading principal submatrices are nonsingular.

Summation of polynomial matrix multiplication in terms of vector outer product

Matrix filled with 0's and 1's

Write the derivative of the lower-triangular matrix $L(t)$ in terms of $L(t)$, $L^{-1}(t)$ and $\frac{d}{dt}A(t)$, where $A(t)=L(t)L^T(t)$

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