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 111 · Answer 1 · 2026-05-10 17:02:45

111

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 10 May 2026 - 17:02

score 117 · Answer 2 · 2026-04-17 13:01:17

117

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 17 Apr 2026 - 13:01

score 420 · Answer 3 · 2026-05-10 14:56:50

420

Views

Uniqueness of trace as linearization of the rank

Published on 10 May 2026 - 14:56

score 117 · Answer 4 · 2026-05-06 03:21:09

117

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 06 May 2026 - 3:21

score 317 · Answer 5 · 2026-04-11 12:36:41

317

Views

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

Published on 11 Apr 2026 - 12:36

score 602 · Answer 6 · 2026-04-13 13:54:16

602

Views

Derivative of the Euclidean norm with respect to matrix?

Published on 13 Apr 2026 - 13:54

score 147 · Answer 7 · 2026-04-13 02:16:19

147

Views

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

Published on 13 Apr 2026 - 2:16

score 48 · Answer 8 · 2026-05-10 15:52:35

48

Views

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

Published on 10 May 2026 - 15:52

score 144 · Answer 9 · 2026-05-03 12:29:08

144

Views

computing dual matrix trace norm and tensor gradient in python

Published on 03 May 2026 - 12:29

score 345 · Answer 10 · 2026-04-16 10:10:26

345

Views

Rank and Trace of a Matrix

Published on 16 Apr 2026 - 10:10

score 387 · Answer 11 · 2026-05-10 13:26:37

387

Views

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

Published on 10 May 2026 - 13:26

score 424 · Answer 12 · 2026-04-16 04:42:40

424

Views

Inverting a tensor contraction

Published on 16 Apr 2026 - 4:42

score 81 · Answer 13 · 2026-04-16 15:35:22

81

Views

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

Published on 16 Apr 2026 - 15:35

score 168 · Answer 14 · 2026-04-11 07:35:40

168

Views

Bounds on trace of product of hermitian matrices.

Published on 11 Apr 2026 - 7:35

score 62 · Answer 15 · 2026-04-08 21:51:53

62

Views

Joint Optimization problem over Matrix

Published on 08 Apr 2026 - 21:51

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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