List questions from quadratic-forms

Published on 09 Jul 2019 - 9:20

48

Views

Don't understand why this quadratic form can vanish only two times on the arc [-π/2, π/2]

Published on 10 Jul 2019 - 23:59

88

Views

Finding number of real roots

Published on 26 Mar 2026 - 4:31

1.6k

Views

Reference for upper bound $x^T A x \leq \lambda_{\max}(A) \|x\|^2$?

Published on 16 Jul 2019 - 13:28

304

Views

Proof Verification: $4x^2+6xy+4y^2>0$ unless both $x$ and $y$ are equal to $0$

Published on 17 Jul 2019 - 17:28

285

Views

Steepest descent for a quadratic function

Published on 22 Jul 2019 - 17:37

134

Views

Basis of $\mathbb{Z}^n$ approximating bases of $\mathbb{Z}_p^n$

Published on 23 Jul 2019 - 12:07

133

Views

Classification of quadratic forms and Riemann surfaces

Published on 26 Mar 2026 - 8:15

290

Views

Show $x^2 A + x B +C$ is positive semi-definite

Published on 25 Mar 2026 - 17:26

731

Views

Reducing quadratic forms to diagonal form

Published on 28 Jul 2019 - 14:01

114

Views

Partial derivative $\frac{\partial}{\partial x_i} ( {\bf x}-{\bf c})^T A ( {\bf x}-{\bf c})$

Published on 30 Jul 2019 - 16:11

202

Views

Solving binary quadratic form equation

Published on 02 Aug 2019 - 11:54

20

Views

Why is it when you have to use ortho normal vectors for P when changing the variable in a quadratic form.

Published on 03 Aug 2019 - 14:04

60

Views

How to show convexity in $\mathbb{R}^3$ without using principal minors?

Published on 04 Aug 2019 - 18:27

1.5k

Views

When does a quadratic form being equal to zero implies the underlying matrix is equal to zero?

Published on 05 Aug 2019 - 15:05

List Question

Flow of quadratic vector field.

Don't understand why this quadratic form can vanish only two times on the arc [-π/2, π/2]

Finding number of real roots

Reference for upper bound $x^T A x \leq \lambda_{\max}(A) \|x\|^2$?

Proof Verification: $4x^2+6xy+4y^2>0$ unless both $x$ and $y$ are equal to $0$

Steepest descent for a quadratic function

Basis of $\mathbb{Z}^n$ approximating bases of $\mathbb{Z}_p^n$

Classification of quadratic forms and Riemann surfaces

Show $x^2 A + x B +C$ is positive semi-definite

Reducing quadratic forms to diagonal form

Partial derivative $\frac{\partial}{\partial x_i} ( {\bf x}-{\bf c})^T A ( {\bf x}-{\bf c})$

Solving binary quadratic form equation

Why is it when you have to use ortho normal vectors for P when changing the variable in a quadratic form.

How to show convexity in $\mathbb{R}^3$ without using principal minors?

When does a quadratic form being equal to zero implies the underlying matrix is equal to zero?

Trending Questions

Popular # Hahtags

Popular Questions