User Astor

4 votes

0 answers

146 views

Zero diagonal nonsymmetric block checkerboard matrix: orbits and numerical ranges

asked Aug 13, 2017 at 23:20

3 votes

0 answers

297 views

Singular value decomposition of a low rank weak diagonally dominant M-matrix. When is the unitary polar matrix positive semi-definite?

asked Jan 25, 2017 at 17:59

3 votes

1 answer

95 views

Numerical range in subspaces

asked Sep 1, 2017 at 14:55

2 votes

0 answers

112 views

Coarse grid correction

asked Aug 16, 2017 at 23:18

2 votes

1 answer

1k views

Norm of a the skew symmetric part of a unitary matrix

asked May 12, 2017 at 0:49

2 votes

0 answers

167 views

Lower bound for the sum of cosines between singular vectors of diagonally dominant matrices

asked Jul 19, 2017 at 15:00

1 vote

1 answer

156 views

Norm numerical range

asked Sep 1, 2017 at 13:44

1 vote

1 answer

605 views

Can I modify the singular values of a matrix in order to get a negative eigenvalue?

asked Apr 26, 2017 at 13:11

0 votes

1 answer

164 views

Non-strict column diagonally dominant matrix inner product

asked Jul 24, 2016 at 15:55

0 votes

1 answer

221 views

Matrix series as block matrix times vector of matrix multiplication

asked Nov 15, 2016 at 16:24

0 votes

1 answer

116 views

Matrix equation of the form $C A C^\intercal = D$

asked Oct 18, 2018 at 13:32

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11 Questions

Zero diagonal nonsymmetric block checkerboard matrix: orbits and numerical ranges

Singular value decomposition of a low rank weak diagonally dominant M-matrix. When is the unitary polar matrix positive semi-definite?

Numerical range in subspaces

Coarse grid correction

Norm of a the skew symmetric part of a unitary matrix

Lower bound for the sum of cosines between singular vectors of diagonally dominant matrices

Norm numerical range

Can I modify the singular values of a matrix in order to get a negative eigenvalue?

Non-strict column diagonally dominant matrix inner product

Matrix series as block matrix times vector of matrix multiplication

Matrix equation of the form $C A C^\intercal = D$