Question

Show that scatter matrix is possitive definite

score 312 · Answer 1 · 2016-01-19 17:46:17

312

Views

Show that scatter matrix is possitive definite

Published on 19 Jan 2016 - 17:46

score 127 · Answer 2 · 2016-01-20 14:25:38

127

Views

uniform lower bound for convex combination of a sequence of positive semidefinite matrices

Published on 20 Jan 2016 - 14:25

score 630 · Answer 3 · 2016-01-22 09:16:43

630

Views

A property regarding the eigenvalue of the sum of positive semidefinite matrices is positive definite?

Published on 22 Jan 2016 - 9:16

score 59 · Answer 4 · 2026-03-26 23:59:50

59

Views

Matrix comparison depend on one scalar variable

Published on 26 Mar 2026 - 23:59

score 573 · Answer 5 · 2016-01-26 05:33:56

573

Views

Postive-semidefiniteness of matrix with entries $1/(a_i+a_j)$

Published on 26 Jan 2016 - 5:33

score 274 · Answer 6 · 2026-03-28 05:00:46

274

Views

Inner Product on $P_3(\mathbb{R})$ true/false

Published on 28 Mar 2026 - 5:00

score 313 · Answer 7 · 2016-01-29 02:45:33

313

Views

Proving positive definiteness of matrix $a_{ij}=\frac{2x_ix_j}{x_i + x_j}$

Published on 29 Jan 2016 - 2:45

score 247 · Answer 8 · 2026-03-28 04:53:08

247

Views

Is the matrix filled with the areas of pairwise intersections of disks in a plane always positive semidefinite?

Published on 28 Mar 2026 - 4:53

score 423 · Answer 9 · 2016-02-04 14:02:55

423

Views

Is $|A| < |B|$ if $A-B$ is positive definite?

Published on 04 Feb 2016 - 14:02

score 4k · Answer 10 · 2016-02-08 03:50:39

4k

Views

Is $X'X$ positive definite a necessary condition for $X'X$ to have full rank?

Published on 08 Feb 2016 - 3:50

score 74 · Answer 11 · 2016-02-08 12:57:49

74

Views

How do we prove that a specific kernel is positive definite (case of logarithm)?

Published on 08 Feb 2016 - 12:57

score 96 · Answer 12 · 2016-02-10 08:19:20

96

Views

inequality with a positive matrix

Published on 10 Feb 2016 - 8:19

score 340 · Answer 13 · 2016-02-11 11:36:56

340

Views

Positive definite matrix meaning in human language? "Definite"?

Published on 11 Feb 2016 - 11:36

score 7.5k · Answer 14 · 2016-02-12 11:52:28

7.5k

Views

Prove a covariance matrix is positive semidefinite

Published on 12 Feb 2016 - 11:52

score 482 · Answer 15 · 2016-02-16 11:16:09

482

Views

For what values of $a\in \mathbb{C}$, matrix $A$ is positive definite?

Published on 16 Feb 2016 - 11:16

List Question

Show that scatter matrix is possitive definite

uniform lower bound for convex combination of a sequence of positive semidefinite matrices

A property regarding the eigenvalue of the sum of positive semidefinite matrices is positive definite?

Matrix comparison depend on one scalar variable

Postive-semidefiniteness of matrix with entries $1/(a_i+a_j)$

Inner Product on $P_3(\mathbb{R})$ true/false

Proving positive definiteness of matrix $a_{ij}=\frac{2x_ix_j}{x_i + x_j}$

Is the matrix filled with the areas of pairwise intersections of disks in a plane always positive semidefinite?

Is $|A| < |B|$ if $A-B$ is positive definite?

Is $X'X$ positive definite a necessary condition for $X'X$ to have full rank?

How do we prove that a specific kernel is positive definite (case of logarithm)?

inequality with a positive matrix

Positive definite matrix meaning in human language? "Definite"?

Prove a covariance matrix is positive semidefinite

For what values of $a\in \mathbb{C}$, matrix $A$ is positive definite?

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