Question

Find matrix $S$ such that $diag(S)=d$ and $S^{-1}_{ij}=P_{ij}$ $\forall i \neq j$

score 49 · Answer 1 · 2026-03-25 04:42:47

49

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Find matrix $S$ such that $diag(S)=d$ and $S^{-1}_{ij}=P_{ij}$ $\forall i \neq j$

Published on 25 Mar 2026 - 4:42

score 1k · Answer 2 · 2018-03-27 17:43:55

1k

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"Dividing" both sides of an inequality by a vector

Published on 27 Mar 2018 - 17:43

score 84 · Answer 3 · 2026-03-25 01:33:58

84

Views

On solving quadratic matrix equations

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score 286 · Answer 4 · 2026-03-25 14:12:47

286

Views

Does $\exp(At)=\exp(Bt)$ for infinitely many $t$ imply $A=B$ where $A,B$ are square matrices?

Published on 25 Mar 2026 - 14:12

score 50 · Answer 5 · 2026-03-25 07:47:18

50

Views

Linear algebra question: How can I get this cost function?

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score 165 · Answer 6 · 2026-03-22 23:45:55

165

Views

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score 79 · Answer 7 · 2018-04-02 08:10:09

79

Views

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Published on 02 Apr 2018 - 8:10

score 53 · Answer 8 · 2018-04-02 17:57:55

53

Views

Does the statement $x^\top Ax \cdot x^\top Bx = |x|^2 x^\top ABx$ hold for symmetric $A,B$?

Published on 02 Apr 2018 - 17:57

score 56 · Answer 9 · 2018-04-03 07:47:32

56

Views

If we have $Ax=Bx,\forall x$ , can we derive that $A=B$?

Published on 03 Apr 2018 - 7:47

score 529 · Answer 10 · 2018-04-03 14:13:59

529

Views

If the product of two matrices is a null matrix, when can we say one of them is a null matrix?

Published on 03 Apr 2018 - 14:13

score 58 · Answer 11 · 2018-04-03 21:02:11

58

Views

How fast does a matrix expression go to zero?

Published on 03 Apr 2018 - 21:02

score 572 · Answer 12 · 2018-04-04 00:55:05

572

Views

Solve Ax = b when the dimension of b does not equal the dimension of A

Published on 04 Apr 2018 - 0:55

score 57 · Answer 13 · 2018-04-04 02:50:47

57

Views

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score 53 · Answer 14 · 2026-03-26 00:20:51

53

Views

What are the conditions to find $A$ such that $AB=BD$ where $D$ is block diagonal?

Published on 26 Mar 2026 - 0:20

score 176 · Answer 15 · 2026-03-25 06:03:51

176

Views

Gradient of dot product which contains l1-norm

Published on 25 Mar 2026 - 6:03

List Question

Find matrix $S$ such that $diag(S)=d$ and $S^{-1}_{ij}=P_{ij}$ $\forall i \neq j$

"Dividing" both sides of an inequality by a vector

On solving quadratic matrix equations

Does $\exp(At)=\exp(Bt)$ for infinitely many $t$ imply $A=B$ where $A,B$ are square matrices?

Linear algebra question: How can I get this cost function?

Efficiently computing symmetric Toeplitz matrix such that $Tx=y$

How to solve 2nd order inhomogeneous systems of Differential Equations with Variable Coefficients?

Does the statement $x^\top Ax \cdot x^\top Bx = |x|^2 x^\top ABx$ hold for symmetric $A,B$?

If we have $Ax=Bx,\forall x$ , can we derive that $A=B$?

If the product of two matrices is a null matrix, when can we say one of them is a null matrix?

How fast does a matrix expression go to zero?

Solve Ax = b when the dimension of b does not equal the dimension of A

Finding the value of θ using matrix algebra

What are the conditions to find $A$ such that $AB=BD$ where $D$ is block diagonal?

Gradient of dot product which contains l1-norm

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