Question

Orthogonal Projection onto the Set of Square Matrices with a Unit Trace

score 21 · Answer 1 · 2026-03-28 14:05:27

21

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Orthogonal Projection onto the Set of Square Matrices with a Unit Trace

Published on 28 Mar 2026 - 14:05

score 14 · Answer 2 · 2026-03-02 15:18:52

14

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Evolving quadratic form with heat equation on sphere (to arrive at Trace)

Published on 02 Mar 2026 - 15:18

score 43 · Answer 3 · 2026-03-27 16:39:17

43

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Expectation of matrix-matrix-matrix product

Published on 27 Mar 2026 - 16:39

score 40 · Answer 4 · 2023-11-30 19:52:06

40

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Trace Sign of Matrices from Outer Products of Vectors

Published on 30 Nov 2023 - 19:52

score 60 · Answer 5 · 2026-03-26 21:09:13

60

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Prove that $\text{tr}(B_1^{-1} B_2) \geq \text{tr}((A^\text{T} B_1 A)^{+} A^\text{T} B_2 A)$

Published on 26 Mar 2026 - 21:09

score 53 · Answer 6 · 2023-12-05 16:12:42

53

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Inequality for the trace of the hat matrix in Ridge regression

Published on 05 Dec 2023 - 16:12

score 79 · Answer 7 · 2026-03-25 18:48:34

79

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Is the scalar field ${\bf A} \mapsto \mbox{Tr} \left( {\bf A} {\bf B} {\bf A}^\top {\bf C} \right)$ convex?

Published on 25 Mar 2026 - 18:48

score 25 · Answer 8 · 2026-03-26 04:34:52

25

Views

$F_{s;I}=\frac1{2^{n-|I|}}\sum_{supp(t)\subset I^c}tr(\chi_tF_{s;I})\chi_t=\frac1{2^n}\sum_{supp(t)\subset I^c}tr(\chi_s\otimes\chi_tf)\chi_t$

Published on 26 Mar 2026 - 4:34

score 23 · Answer 9 · 2026-03-26 03:11:07

23

Views

Maximum and minimum value of trace of unistochastic matrix

Published on 26 Mar 2026 - 3:11

score 91 · Answer 10 · 2023-12-26 16:15:01

91

Views

Log determinant form for matrix raised to another matrix

Published on 26 Dec 2023 - 16:15

score 57 · Answer 11 · 2024-01-04 20:28:02

57

Views

Computing ${\rm Tr}(ABAB)$ with $B$ diagonal

Published on 04 Jan 2024 - 20:28

score 71 · Answer 12 · 2024-01-12 17:11:06

71

Views

Schatten $p$-ideals for Hilbert operators

Published on 12 Jan 2024 - 17:11

score 39 · Answer 13 · 2026-03-25 10:52:29

39

Views

Matrix inequality with different dimension and square root

Published on 25 Mar 2026 - 10:52

score 106 · Answer 14 · 2026-03-25 14:36:43

106

Views

Does similarity of matrices preserve sum of principal minors?

Published on 25 Mar 2026 - 14:36

score 39 · Answer 15 · 2026-03-28 12:57:36

39

Views

Symmetric and skew-symmetric matrices

Published on 28 Mar 2026 - 12:57

List Question

Orthogonal Projection onto the Set of Square Matrices with a Unit Trace

Evolving quadratic form with heat equation on sphere (to arrive at Trace)

Expectation of matrix-matrix-matrix product

Trace Sign of Matrices from Outer Products of Vectors

Prove that $\text{tr}(B_1^{-1} B_2) \geq \text{tr}((A^\text{T} B_1 A)^{+} A^\text{T} B_2 A)$

Inequality for the trace of the hat matrix in Ridge regression

Is the scalar field ${\bf A} \mapsto \mbox{Tr} \left( {\bf A} {\bf B} {\bf A}^\top {\bf C} \right)$ convex?

$F_{s;I}=\frac1{2^{n-|I|}}\sum_{supp(t)\subset I^c}tr(\chi_tF_{s;I})\chi_t=\frac1{2^n}\sum_{supp(t)\subset I^c}tr(\chi_s\otimes\chi_tf)\chi_t$

Maximum and minimum value of trace of unistochastic matrix

Log determinant form for matrix raised to another matrix

Computing ${\rm Tr}(ABAB)$ with $B$ diagonal

Schatten $p$-ideals for Hilbert operators

Matrix inequality with different dimension and square root

Does similarity of matrices preserve sum of principal minors?

Symmetric and skew-symmetric matrices

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