Question

" Let $A$ be a symmetric $2 \times 2$ matrix with the property $A^{-1} = A$. Find all possible trace values of $\operatorname{tr}A$"

score 107 · Answer 1 · 2018-04-24 16:02:39

107

Views

" Let $A$ be a symmetric $2 \times 2$ matrix with the property $A^{-1} = A$. Find all possible trace values of $\operatorname{tr}A$"

Published on 24 Apr 2018 - 16:02

score 114 · Answer 2 · 2018-04-27 02:50:07

114

Views

Any function that is in $W^{1,2}_0(\Omega)$ but not in $W^{1,p}_0(\Omega)$ for any $p>2$

Published on 27 Apr 2018 - 2:50

score 418 · Answer 3 · 2026-03-25 06:05:43

418

Views

Uniqueness of trace as linearization of the rank

Published on 25 Mar 2026 - 6:05

score 110 · Answer 4 · 2026-03-23 11:22:45

110

Views

For $2 \times 2$ matrices $AB=-BA$ with $BA$ not $0$, prove that $\mathrm{tr}(A)=\mathrm{tr}(B)=\mathrm{tr}(AB)=0$

Published on 23 Mar 2026 - 11:22

score 315 · Answer 5 · 2026-03-25 04:41:45

315

Views

How to think of the trace of a linear map as connecting its output back to its own input

Published on 25 Mar 2026 - 4:41

score 599 · Answer 6 · 2018-05-02 09:05:53

599

Views

Derivative of the Euclidean norm with respect to matrix?

Published on 02 May 2018 - 9:05

score 145 · Answer 7 · 2026-03-25 04:42:44

145

Views

Trace of a tensor to the power n, as a polynomial of it's invariants?

Published on 25 Mar 2026 - 4:42

score 46 · Answer 8 · 2026-03-24 22:01:58

46

Views

Derivative of $f({Z}) = Tr({Z}{U}^T{Z}^T{Z}{U}{Z}^T)$

Published on 24 Mar 2026 - 22:01

score 139 · Answer 9 · 2026-03-22 16:02:35

139

Views

computing dual matrix trace norm and tensor gradient in python

Published on 22 Mar 2026 - 16:02

score 341 · Answer 10 · 2018-05-06 22:55:32

341

Views

Rank and Trace of a Matrix

Published on 06 May 2018 - 22:55

score 384 · Answer 11 · 2026-03-25 00:07:47

384

Views

Jensen inequality for matrix exponential of positive definite matrix (laplacian)

Published on 25 Mar 2026 - 0:07

score 421 · Answer 12 · 2026-03-25 04:35:03

421

Views

Inverting a tensor contraction

Published on 25 Mar 2026 - 4:35

score 78 · Answer 13 · 2018-05-11 21:37:03

78

Views

Show that $\lambda_n = (-1)^n, \lambda_{n-1} = (-1)^{n-1}$. $Trace(\phi)$ and $ \lambda_0 = det(\phi)$.

Published on 11 May 2018 - 21:37

score 165 · Answer 14 · 2018-05-15 15:14:01

165

Views

Bounds on trace of product of hermitian matrices.

Published on 15 May 2018 - 15:14

score 58 · Answer 15 · 2018-05-16 01:52:31

58

Views

Joint Optimization problem over Matrix

Published on 16 May 2018 - 1:52

List Question

" Let $A$ be a symmetric $2 \times 2$ matrix with the property $A^{-1} = A$. Find all possible trace values of $\operatorname{tr}A$"

Any function that is in $W^{1,2}_0(\Omega)$ but not in $W^{1,p}_0(\Omega)$ for any $p>2$

Uniqueness of trace as linearization of the rank

For $2 \times 2$ matrices $AB=-BA$ with $BA$ not $0$, prove that $\mathrm{tr}(A)=\mathrm{tr}(B)=\mathrm{tr}(AB)=0$

How to think of the trace of a linear map as connecting its output back to its own input

Derivative of the Euclidean norm with respect to matrix?

Trace of a tensor to the power n, as a polynomial of it's invariants?

Derivative of $f({Z}) = Tr({Z}{U}^T{Z}^T{Z}{U}{Z}^T)$

computing dual matrix trace norm and tensor gradient in python

Rank and Trace of a Matrix

Jensen inequality for matrix exponential of positive definite matrix (laplacian)

Inverting a tensor contraction

Show that $\lambda_n = (-1)^n, \lambda_{n-1} = (-1)^{n-1}$. $Trace(\phi)$ and $ \lambda_0 = det(\phi)$.

Bounds on trace of product of hermitian matrices.

Joint Optimization problem over Matrix

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