Question

Does $\mathbf{u}^T \mathbf{J}\mathbf{u}= N\lambda_{\mathrm{max}}$ imply that $\mathbf{u}$ is the 'largest' eigenvector?

score 132 · Answer 1 · 2018-04-23 12:48:37

132

Views

Does $\mathbf{u}^T \mathbf{J}\mathbf{u}= N\lambda_{\mathrm{max}}$ imply that $\mathbf{u}$ is the 'largest' eigenvector?

Published on 23 Apr 2018 - 12:48

score 568 · Answer 2 · 2026-03-17 04:15:23

568

Views

On Proposition 2.6 Gualtieri Thesis Generalized complex geometry

Published on 17 Mar 2026 - 4:15

score 943 · Answer 3 · 2018-04-24 13:48:52

943

Views

Solve for volume of ellipsoid $(\mathbb x- \mathbf{\mu})^T \Sigma^{-1}(\mathbb x- \mathbf{\mu})=1/a$

Published on 24 Apr 2018 - 13:48

score 31 · Answer 4 · 2018-04-24 17:35:09

31

Views

To find a relation between $a,b,c$ given a quadratic and a cubic epression

Published on 24 Apr 2018 - 17:35

score 199 · Answer 5 · 2018-04-25 01:42:50

199

Views

Maximum of a graph to find volume

Published on 25 Apr 2018 - 1:42

score 333 · Answer 6 · 2026-03-23 01:18:50

333

Views

Cone $x^2+y^2-z^2=0$ as a degenerate quadric

Published on 23 Mar 2026 - 1:18

score 63 · Answer 7 · 2018-05-06 15:57:32

If $M=\left(\begin{smallmatrix} 0 & 1 & -1 \\ -1 & 0 & \alpha \\ 2 & -\alpha & 0 \end{smallmatrix}\right)$ and $Mx=b$, for some $x$,then find $x^TMx$

score 99 · Answer 8 · 2018-05-07 15:25:07

99

Views

How to represent the given quadratic equation into the tensor notation and find the solutions?

Published on 07 May 2018 - 15:25

score 1k · Answer 9 · 2018-05-09 18:17:34

1k

Views

Positive and negative index of inertia

Published on 09 May 2018 - 18:17

score 53 · Answer 10 · 2018-05-11 03:28:01

53

Views

Counterexample about witt's theorem?

Published on 11 May 2018 - 3:28

score 55 · Answer 11 · 2018-05-12 14:20:00

55

Views

Surface described by ${\bf r^\top A r + b^\top r}=1$?

Published on 12 May 2018 - 14:20

score 657 · Answer 12 · 2026-03-20 03:38:20

657

Views

Direct product of group with itself mod diagonal subgroup

Published on 20 Mar 2026 - 3:38

score 494 · Answer 13 · 2018-05-12 22:23:37

494

Views

Orthogonal complement and quadratic form

Published on 12 May 2018 - 22:23

score 2.8k · Answer 14 · 2018-05-15 07:44:26

2.8k

Views

Solving a non-zero quadratic equation of two variables

Published on 15 May 2018 - 7:44

score 94 · Answer 15 · 2026-03-23 04:00:44

94

Views

How to prove the necessary conditions for checking the positive semidefiniteness of a $2$ by $2$ matrix?

Published on 23 Mar 2026 - 4:00

List Question

Does $\mathbf{u}^T \mathbf{J}\mathbf{u}= N\lambda_{\mathrm{max}}$ imply that $\mathbf{u}$ is the 'largest' eigenvector?

On Proposition 2.6 Gualtieri Thesis Generalized complex geometry

Solve for volume of ellipsoid $(\mathbb x- \mathbf{\mu})^T \Sigma^{-1}(\mathbb x- \mathbf{\mu})=1/a$

To find a relation between $a,b,c$ given a quadratic and a cubic epression

Maximum of a graph to find volume

Cone $x^2+y^2-z^2=0$ as a degenerate quadric

If $M=\left(\begin{smallmatrix} 0 & 1 & -1 \\ -1 & 0 & \alpha \\ 2 & -\alpha & 0 \end{smallmatrix}\right)$ and $Mx=b$, for some $x$,then find $x^TMx$

How to represent the given quadratic equation into the tensor notation and find the solutions?

Positive and negative index of inertia

Counterexample about witt's theorem?

Surface described by ${\bf r^\top A r + b^\top r}=1$?

Direct product of group with itself mod diagonal subgroup

Orthogonal complement and quadratic form

Solving a non-zero quadratic equation of two variables

How to prove the necessary conditions for checking the positive semidefiniteness of a $2$ by $2$ matrix?

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