Question

complete the square $ y^2 + z^2 + yz - 5y - 5z $ and showing it is bounded

score 100 · Answer 1 · 2019-08-05 20:06:26

100

Views

complete the square $ y^2 + z^2 + yz - 5y - 5z $ and showing it is bounded

Published on 05 Aug 2019 - 20:06

score 161 · Answer 2 · 2019-08-06 10:55:57

161

Views

Minimal value of the quadratic form $\mathbf{x}^t A \mathbf x$ subject to the contraint $\mathbf{x}^t \mathbf x = 1$

Published on 06 Aug 2019 - 10:55

score 95 · Answer 3 · 2026-03-25 04:38:19

95

Views

Finding a basis for the Eisenstein space $\mathcal{E}_1(12,\chi)$

Published on 25 Mar 2026 - 4:38

score 124 · Answer 4 · 2019-08-09 19:41:00

124

Views

On completing the square and symmetry

Published on 09 Aug 2019 - 19:41

score 465 · Answer 5 · 2026-03-26 15:35:06

465

Views

Necessary vs sufficient conditions - matrix definiteness

Published on 26 Mar 2026 - 15:35

score 97 · Answer 6 · 2019-08-12 22:51:14

97

Views

Showing $u^T M u \geq v^TMv$ when $M$ is symmetric PD and $u,v$ are $0-1$ vectors

Published on 12 Aug 2019 - 22:51

score 54 · Answer 7 · 2019-08-13 01:40:28

54

Views

Showing $ u^T (M+I_n)^{-1} u \geq v^T(M+I_n)^{-1}v $ when $M$ is symmetric PD with positive entries and $u,v$ are $0-1$ vectors

Published on 13 Aug 2019 - 1:40

score 46 · Answer 8 · 2019-08-13 15:32:35

46

Views

$\frac{1+m_v}{1+m_u}\leq \frac{1+u^T(M+I)^{-1} u}{1+v^T(M+I)^{-1}v} \leq \frac{1+m_u}{1+m_v}$ if $M$ is positive sym. PD & $u,v$ are $0-1$ vectors?

Published on 13 Aug 2019 - 15:32

score 249 · Answer 9 · 2026-03-25 09:24:22

249

Views

Maximizing a permutation of a quadratic form

Published on 25 Mar 2026 - 9:24

score 181 · Answer 10 · 2019-08-17 14:17:42

181

Views

A quadratic in two variables can be factored if the determinant is $0$

Published on 17 Aug 2019 - 14:17

score 228 · Answer 11 · 2026-03-25 20:52:22

228

Views

Given two quadratic forms, find an isometry

Published on 25 Mar 2026 - 20:52

score 91 · Answer 12 · 2019-08-21 21:54:44

91

Views

How many linear functions in $\mathbb{Q}[x]$ are needed to write $px^2+q$ as a sum of squares?

Published on 21 Aug 2019 - 21:54

score 436 · Answer 13 · 2026-03-25 18:53:28

436

Views

Comparison of two quadratic forms

Published on 25 Mar 2026 - 18:53

score 87 · Answer 14 · 2019-08-23 09:51:26

87

Views

Showing closure under addition for $\mathcal{Q}$: set of quadratic forms on $\mathbb{R}^n$

Published on 23 Aug 2019 - 9:51

score 92 · Answer 15 · 2026-03-26 15:40:38

92

Views

Positive-Definite Matrix Question

Published on 26 Mar 2026 - 15:40

List Question

complete the square $ y^2 + z^2 + yz - 5y - 5z $ and showing it is bounded

Minimal value of the quadratic form $\mathbf{x}^t A \mathbf x$ subject to the contraint $\mathbf{x}^t \mathbf x = 1$

Finding a basis for the Eisenstein space $\mathcal{E}_1(12,\chi)$

On completing the square and symmetry

Necessary vs sufficient conditions - matrix definiteness

Showing $u^T M u \geq v^TMv$ when $M$ is symmetric PD and $u,v$ are $0-1$ vectors

Showing $ u^T (M+I_n)^{-1} u \geq v^T(M+I_n)^{-1}v $ when $M$ is symmetric PD with positive entries and $u,v$ are $0-1$ vectors

$\frac{1+m_v}{1+m_u}\leq \frac{1+u^T(M+I)^{-1} u}{1+v^T(M+I)^{-1}v} \leq \frac{1+m_u}{1+m_v}$ if $M$ is positive sym. PD & $u,v$ are $0-1$ vectors?

Maximizing a permutation of a quadratic form

A quadratic in two variables can be factored if the determinant is $0$

Given two quadratic forms, find an isometry

How many linear functions in $\mathbb{Q}[x]$ are needed to write $px^2+q$ as a sum of squares?

Comparison of two quadratic forms

Showing closure under addition for $\mathcal{Q}$: set of quadratic forms on $\mathbb{R}^n$

Positive-Definite Matrix Question

Trending Questions

Popular # Hahtags

Popular Questions