List questions from quadratic-forms

Published on 21 Jul 2017 - 4:58

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Is there a systematic way of finding the matrix of a quadratic form?

Published on 22 Jul 2017 - 11:05

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Characterizing Conic Section By Eigenvalues

Published on 31 Mar 2026 - 17:06

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Prove that there exist constants $u,v$ such that $uA+vB$ is positive definite.

Published on 26 Jul 2017 - 5:18

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Representing polynomials as quadratic forms

Published on 30 Mar 2026 - 3:52

135

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Solving inequality with modulus

Published on 28 Jul 2017 - 6:36

182

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Further evaluating $|1 - \exp^{-ika}|^2$ for $a \in [0, 1]$ and $k$ in $\mathbb R$

Published on 29 Jul 2017 - 21:28

259

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Triangle inequality for split-complex numbers

Published on 25 Mar 2026 - 17:35

93

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Lower bound on $x^T A x$ when A is non-symmetric with positive eigenvalues

Published on 04 Aug 2017 - 20:03

375

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How to prove this $A$ has full rank and the number of positive eigenvalues of $A$ is one?

Published on 06 Aug 2017 - 11:46

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Changing co-ordinate systems quadratic forms

Published on 06 Aug 2017 - 11:59

157

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Is the quadratic form of a Euclidean Jordan Algebra positive?

Published on 10 Aug 2017 - 13:35

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Absence of cross product terms in quadratic forms.

Published on 15 Aug 2017 - 3:43

216

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The Representation of a number by a (fixed given) binary quadratic form

Published on 15 Aug 2017 - 19:40

514

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Maximum of quadratic form subject to equality and non-negativity constraints

Published on 29 Mar 2026 - 3:28

List Question

A question about real symmetric matrices diagonalization

Is there a systematic way of finding the matrix of a quadratic form?

Characterizing Conic Section By Eigenvalues

Prove that there exist constants $u,v$ such that $uA+vB$ is positive definite.

Representing polynomials as quadratic forms

Solving inequality with modulus

Further evaluating $|1 - \exp^{-ika}|^2$ for $a \in [0, 1]$ and $k$ in $\mathbb R$

Triangle inequality for split-complex numbers

Lower bound on $x^T A x$ when A is non-symmetric with positive eigenvalues

How to prove this $A$ has full rank and the number of positive eigenvalues of $A$ is one?

Changing co-ordinate systems quadratic forms

Is the quadratic form of a Euclidean Jordan Algebra positive?

Absence of cross product terms in quadratic forms.

The Representation of a number by a (fixed given) binary quadratic form

Maximum of quadratic form subject to equality and non-negativity constraints

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