Question

Reordering vertices of a graph to make the adjacency matrix a block matrix with band-shaped blocks

score 161 · Answer 1 · 2026-03-26 06:31:08

161

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Reordering vertices of a graph to make the adjacency matrix a block matrix with band-shaped blocks

Published on 26 Mar 2026 - 6:31

score 119 · Answer 2 · 2026-03-26 14:32:34

119

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Using a Schur complement, prove that the matrix has two double eigenvalues

Published on 26 Mar 2026 - 14:32

score 242 · Answer 3 · 2021-09-07 12:05:59

242

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Tricks to find determinant of large symmetric matrix

Published on 07 Sep 2021 - 12:05

score 237 · Answer 4 · 2026-03-25 21:22:15

237

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Analytical expression for the determinant of block tridiagonal matrix

Published on 25 Mar 2026 - 21:22

score 34 · Answer 5 · 2021-09-17 13:44:46

34

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Estimate the norm of block matrix [(1-r)I,rI;-rI,A+rI]

Published on 17 Sep 2021 - 13:44

score 466 · Answer 6 · 2026-03-26 14:31:59

466

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Measure of closeness of a matrix to the block diagonal form

Published on 26 Mar 2026 - 14:31

score 220 · Answer 7 · 2021-09-21 07:43:33

220

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For $A, B, C, D \in \mathbb{F}^{n \times n}$, show that $\det{\begin{pmatrix} A & B \\ C & D\end{pmatrix}} = \det{A}\det{D} - \det{B}\det{C}$

Published on 21 Sep 2021 - 7:43

score 156 · Answer 8 · 2021-09-22 15:56:38

156

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Determinant and Inverse of a block matrix with diagonal blocks

Published on 22 Sep 2021 - 15:56

score 111 · Answer 9 · 2021-09-28 19:41:27

111

Views

Find Block Matrix Inverse

Published on 28 Sep 2021 - 19:41

score 170 · Answer 10 · 2021-09-28 20:49:37

170

Views

Block Matrix - Prove Invertibility

Published on 28 Sep 2021 - 20:49

score 73 · Answer 11 · 2021-09-30 20:40:05

73

Views

Block partitioned covariance matrix is positive definite

Published on 30 Sep 2021 - 20:40

score 81 · Answer 12 · 2026-03-25 15:37:44

81

Views

Block LU factorization with more than two blocks?

Published on 25 Mar 2026 - 15:37

score 96 · Answer 13 · 2021-10-18 19:00:58

96

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Matrix identity over a general field

Published on 18 Oct 2021 - 19:00

score 365 · Answer 14 · 2021-10-23 16:14:40

365

Views

Prove $\det\begin{bmatrix}A & B\\ B & A\end{bmatrix} = \det(A-B)\det(A+B)$, even when $A$ and $B$ are not commutative.

Published on 23 Oct 2021 - 16:14

score 123 · Answer 15 · 2021-10-31 17:35:41

123

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Block-diagonal forms and SVD(singular value decomposition)

Published on 31 Oct 2021 - 17:35

List Question

Reordering vertices of a graph to make the adjacency matrix a block matrix with band-shaped blocks

Using a Schur complement, prove that the matrix has two double eigenvalues

Tricks to find determinant of large symmetric matrix

Analytical expression for the determinant of block tridiagonal matrix

Estimate the norm of block matrix [(1-r)I,rI;-rI,A+rI]

Measure of closeness of a matrix to the block diagonal form

For $A, B, C, D \in \mathbb{F}^{n \times n}$, show that $\det{\begin{pmatrix} A & B \\ C & D\end{pmatrix}} = \det{A}\det{D} - \det{B}\det{C}$

Determinant and Inverse of a block matrix with diagonal blocks

Find Block Matrix Inverse

Block Matrix - Prove Invertibility

Block partitioned covariance matrix is positive definite

Block LU factorization with more than two blocks?

Matrix identity over a general field

Prove $\det\begin{bmatrix}A & B\\ B & A\end{bmatrix} = \det(A-B)\det(A+B)$, even when $A$ and $B$ are not commutative.

Block-diagonal forms and SVD(singular value decomposition)

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