List questions from quadratic-forms

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Reducing Quadratic form

Published on 12 Jan 2020 - 9:24

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Number of solutions binary quadratic form modulo M

Published on 13 Jan 2020 - 17:06

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Find the variance of $\underline{x}^{T}A\underline{x}$

Published on 18 Jan 2020 - 9:28

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How to find integral solutions of a integral binary quadratic form?

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Bilinear forms on finite-dimensional space

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A quadratic inequality related to the $\log$ function

Published on 26 Mar 2026 - 9:48

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Minimize a quadratic form

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Symmetric matrices in quadratic forms

Published on 27 Jan 2020 - 18:44

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$\operatorname{Rank}\left(C^{T} AC\right)=\operatorname{rank}(C)$ if $A$ is a $n \times n$ symmetric and positive definite matrix.

Published on 28 Jan 2020 - 5:23

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Prove for any matrix $B$, we have $y^{\top}By = y^{\top}Ay$ with $A$ symmetric

Published on 28 Jan 2020 - 16:54

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Find centers of chords of quadratic form

Published on 28 Jan 2020 - 20:54

47

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Quadratic form constant over constrained region

Published on 29 Jan 2020 - 16:58

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Similar integral reduced matrices

Published on 30 Jan 2020 - 13:54

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Convexity of $\{x\in \mathbb R^n,\;x^TAx\leq t\}$ for all $t$ implies that $A$ is p.s.d.

Published on 26 Mar 2026 - 11:01

List Question

Reducible quadratic homogeneous polynomial has degenerate quadratic form?

Reducing Quadratic form

Number of solutions binary quadratic form modulo M

Find the variance of $\underline{x}^{T}A\underline{x}$

How to find integral solutions of a integral binary quadratic form?

Bilinear forms on finite-dimensional space

A quadratic inequality related to the $\log$ function

Minimize a quadratic form

Symmetric matrices in quadratic forms

$\operatorname{Rank}\left(C^{T} AC\right)=\operatorname{rank}(C)$ if $A$ is a $n \times n$ symmetric and positive definite matrix.

Prove for any matrix $B$, we have $y^{\top}By = y^{\top}Ay$ with $A$ symmetric

Find centers of chords of quadratic form

Quadratic form constant over constrained region

Similar integral reduced matrices

Convexity of $\{x\in \mathbb R^n,\;x^TAx\leq t\}$ for all $t$ implies that $A$ is p.s.d.

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