Question

Positive semidefinite matrix nearest to given symmetric matrix $Y$

score 75 · Answer 1 · 2019-12-01 09:32:40

75

Views

Positive semidefinite matrix nearest to given symmetric matrix $Y$

Published on 01 Dec 2019 - 9:32

score 41 · Answer 2 · 2026-03-17 22:59:52

41

Views

Does $\operatorname{Tr}( (A+B)^ \dagger A) \leq k + \frac{1}{\lambda_{k+1} (B)}\operatorname{Tr}(A)$ for $A$, $B$ sdp and $k \in \mathbb N$?

Published on 17 Mar 2026 - 22:59

score 862 · Answer 3 · 2019-12-08 21:09:31

862

Views

Claim about positive definiteness of $X'X$ and the rank of $X$

Published on 08 Dec 2019 - 21:09

score 1k · Answer 4 · 2019-12-11 15:58:43

1k

Views

Proving that a matrix is positive semidefinite

Published on 11 Dec 2019 - 15:58

score 411 · Answer 5 · 2019-12-12 01:36:30

411

Views

Is every positive semidefinite matrix the Gramian of a matrix over the same ring?

Published on 12 Dec 2019 - 1:36

score 188 · Answer 6 · 2019-12-13 06:00:14

188

Views

Inequality regarding diagonal entries and eigenvalues of a PSD matrix

Published on 13 Dec 2019 - 6:00

score 225 · Answer 7 · 2019-12-13 07:28:01

225

Views

Shortcut to calculate eigenvectors of submatrix of symmetric PSD matrix

Published on 13 Dec 2019 - 7:28

score 191 · Answer 8 · 2019-12-18 12:41:52

191

Views

An elegant proof for a claim about orthogonal and positive-definite matrices

Published on 18 Dec 2019 - 12:41

score 272 · Answer 9 · 2019-12-20 19:45:37

272

Views

if $A$ is a symmetric and nonnegative definite matrix then $A=LL^T$ for some $L$ lower triangular matrix.

Published on 20 Dec 2019 - 19:45

score 36 · Answer 10 · 2019-12-22 15:47:01

36

Views

Matrix optimization with inverse of symmetric positive definite (SPD)

Published on 22 Dec 2019 - 15:47

score 154 · Answer 11 · 2019-12-25 05:30:08

154

Views

Determinant of a $3\times 3$ real symmetric matrix

Published on 25 Dec 2019 - 5:30

score 85 · Answer 12 · 2019-12-31 14:29:45

85

Views

Why does this statement hold for positive semidefinite matrices?

Published on 31 Dec 2019 - 14:29

score 155 · Answer 13 · 2026-03-16 20:05:44

155

Views

Does every negative semidefinite matrix lie in the convex cone generated by the squares of skew-symmetric matrices?

Published on 16 Mar 2026 - 20:05

score 82 · Answer 14 · 2020-01-09 20:49:40

82

Views

Find matrix $B$ such that $B B^\top \approx A$

Published on 09 Jan 2020 - 20:49

score 129 · Answer 15 · 2020-01-10 15:56:08

129

Views

Are orthogonal positive semidefinite matrices each with trace equal to one necessarily rank-one projections?

Published on 10 Jan 2020 - 15:56

List Question

Positive semidefinite matrix nearest to given symmetric matrix $Y$

Does $\operatorname{Tr}( (A+B)^ \dagger A) \leq k + \frac{1}{\lambda_{k+1} (B)}\operatorname{Tr}(A)$ for $A$, $B$ sdp and $k \in \mathbb N$?

Claim about positive definiteness of $X'X$ and the rank of $X$

Proving that a matrix is positive semidefinite

Is every positive semidefinite matrix the Gramian of a matrix over the same ring?

Inequality regarding diagonal entries and eigenvalues of a PSD matrix

Shortcut to calculate eigenvectors of submatrix of symmetric PSD matrix

An elegant proof for a claim about orthogonal and positive-definite matrices

if $A$ is a symmetric and nonnegative definite matrix then $A=LL^T$ for some $L$ lower triangular matrix.

Matrix optimization with inverse of symmetric positive definite (SPD)

Determinant of a $3\times 3$ real symmetric matrix

Why does this statement hold for positive semidefinite matrices?

Does every negative semidefinite matrix lie in the convex cone generated by the squares of skew-symmetric matrices?

Find matrix $B$ such that $B B^\top \approx A$

Are orthogonal positive semidefinite matrices each with trace equal to one necessarily rank-one projections?

Trending Questions

Popular # Hahtags

Popular Questions