User Rodrigo de Azevedo

15 votes

Determinant of a $k \times k$ block matrix

answered May 21, 2016 at 15:09

11 votes

Accepted

Decomposing a matrix into a product of sparse matrices

answered Dec 29, 2016 at 23:40

11 votes

Applications of mathematics in clinical setting

answered Sep 17, 2019 at 19:53

10 votes

Mindset to understand category theory

answered Apr 4, 2021 at 1:31

9 votes

Is there a name for matrices of the form $a_{ij}=\frac{1}{a_{ji}}$?

answered Dec 27, 2023 at 14:06

8 votes

Complexity of convex quadratically constrained quadratic programming (QCQP)

answered Nov 12, 2017 at 14:19

7 votes

Accepted

Finding Toeplitz matrix nearest to a given matrix

answered Mar 14, 2018 at 21:39

7 votes

Accepted

What is the term for this type of matrix?

answered Feb 13, 2017 at 15:48

6 votes

Accepted

Minimization problem involving the inverse of an affine matrix function

answered Aug 23, 2019 at 9:28

5 votes

What phenomena are better modelled by SDE instead of ODE?

answered Dec 19, 2023 at 18:07

5 votes

Accepted

Positive definite matrices diagonalised by orthogonal matrices that are also involutions

answered Jun 28, 2018 at 12:58

5 votes

Determining if some permutation of a vector satisfies a system of linear equations

answered Aug 6, 2018 at 5:46

5 votes

Accepted

Solving system of bilinear equations

answered Aug 15, 2018 at 6:24

5 votes

Large power of an adjacency matrix

answered Dec 12, 2016 at 0:02

5 votes

Do these matrices have a name?

answered Dec 9, 2016 at 0:08

5 votes

Is this inequality involving the Frobenius norm right?

answered Nov 18, 2016 at 13:56

4 votes

Exact form of eigenvalues of pentadiagonal Toeplitz matrices

answered Jul 3, 2025 at 11:19

4 votes

Symmetric linear least-squares solution

answered Sep 7, 2019 at 14:11

4 votes

Solving $\text{trace}\left[\left(I + pY\right)^{-1} \left(I - p^{2}Y\right)\right] = 0$ for scalar $p$

answered Jan 18, 2017 at 18:23

3 votes

Prominent non-mathematical work of mathematicians

answered Aug 22, 2020 at 8:52

3 votes

Accepted

Roots of determinant of matrix with polynomial entries

answered Jul 16, 2020 at 10:37

3 votes

Accepted

INVERT transform as determinants of certain Hessenberg Toeplitz matrices

answered Apr 8, 2025 at 13:00

3 votes

Eigenvalues of $\operatorname{diag}({\bf v}) - {\bf v} {\bf v}^\top - \alpha({\bf v} - {\bf w})({\bf v} - {\bf w})^\top$

answered May 16, 2023 at 13:13

3 votes

Nontrivial lower bound on the sum of matrix norms

answered Nov 19, 2017 at 21:31

3 votes

Maximize the Euclidean norm of a matrix times a vector on unit sub-spheres

answered Aug 4, 2017 at 8:34

3 votes

Package for the Closest Vector Problem (CVP)?

answered Dec 1, 2016 at 18:22

3 votes

Determinant of a $k \times k$ block matrix

answered Jun 1, 2016 at 1:00

3 votes

Intersecting a convex polytope with the unit sphere

answered Dec 10, 2016 at 0:42

3 votes

An extremal problem

answered Feb 27, 2017 at 11:46

3 votes

Maximize the determinant of Boolean combinations of positive definite matrices

answered Apr 5, 2017 at 2:20

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69 Answers

Determinant of a $k \times k$ block matrix

Decomposing a matrix into a product of sparse matrices

Applications of mathematics in clinical setting

Mindset to understand category theory

Is there a name for matrices of the form $a_{ij}=\frac{1}{a_{ji}}$?

Complexity of convex quadratically constrained quadratic programming (QCQP)

Finding Toeplitz matrix nearest to a given matrix

What is the term for this type of matrix?

Minimization problem involving the inverse of an affine matrix function

What phenomena are better modelled by SDE instead of ODE?

Positive definite matrices diagonalised by orthogonal matrices that are also involutions

Determining if some permutation of a vector satisfies a system of linear equations

Solving system of bilinear equations

Large power of an adjacency matrix

Do these matrices have a name?

Is this inequality involving the Frobenius norm right?

Exact form of eigenvalues of pentadiagonal Toeplitz matrices

Symmetric linear least-squares solution

Solving $\text{trace}\left[\left(I + pY\right)^{-1} \left(I - p^{2}Y\right)\right] = 0$ for scalar $p$

Prominent non-mathematical work of mathematicians

Roots of determinant of matrix with polynomial entries

INVERT transform as determinants of certain Hessenberg Toeplitz matrices

Eigenvalues of $\operatorname{diag}({\bf v}) - {\bf v} {\bf v}^\top - \alpha({\bf v} - {\bf w})({\bf v} - {\bf w})^\top$

Nontrivial lower bound on the sum of matrix norms

Maximize the Euclidean norm of a matrix times a vector on unit sub-spheres

Package for the Closest Vector Problem (CVP)?

Determinant of a $k \times k$ block matrix

Intersecting a convex polytope with the unit sphere

An extremal problem

Maximize the determinant of Boolean combinations of positive definite matrices