List questions from quadratic-forms

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Reference request for quadratic forms.

Published on 28 Oct 2021 - 15:40

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Matrix of a quadratic form and normal form.

Published on 24 Mar 2026 - 12:34

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$f\in k[x_1,\ldots,x_n]$ degree $2$ homogeneous polynomial having a non-trivial zero in odd deg extension of $k$ , $f$ has a non-trivial zero in $k$.

Published on 30 Oct 2021 - 17:30

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Finite set of quadratic forms representing all prime numbers

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Can we say $x^TABx \leq x^TBx$ if $(I-A)$ is positive semi-definite?

Published on 30 Mar 2026 - 11:18

147

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Can the vertex of an elliptic paraboloid be recovered from its quadric matrix form?

Published on 26 Mar 2026 - 6:34

90

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Solving quartic equation with square roots

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186

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Why is the class number $h(-16)=1$?

Published on 26 Mar 2026 - 13:42

131

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Proof of modular group acting properly on upper half plane

Published on 02 Apr 2026 - 17:00

118

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Eliminating cross product terms of a symmetric bilinear form.

Published on 30 Mar 2026 - 13:23

92

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Convergence of a quadratic form with bounded coefficients

Published on 15 Nov 2021 - 10:52

98

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If a bilinear form is non-singular, is the associated quadratic form also non singular?

Published on 30 Mar 2026 - 13:24

38

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How to transform $ax^2+bx+c$ into $p(x-h)^2 +k$?

Published on 17 Nov 2021 - 12:50

254

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Determinant of a quadratic form.

Published on 19 Nov 2021 - 14:48

List Question

Law of Large Numbers and Convergence in Probability of Quadratic Form

Reference request for quadratic forms.

Matrix of a quadratic form and normal form.

$f\in k[x_1,\ldots,x_n]$ degree $2$ homogeneous polynomial having a non-trivial zero in odd deg extension of $k$ , $f$ has a non-trivial zero in $k$.

Finite set of quadratic forms representing all prime numbers

Can we say $x^TABx \leq x^TBx$ if $(I-A)$ is positive semi-definite?

Can the vertex of an elliptic paraboloid be recovered from its quadric matrix form?

Solving quartic equation with square roots

Why is the class number $h(-16)=1$?

Proof of modular group acting properly on upper half plane

Eliminating cross product terms of a symmetric bilinear form.

Convergence of a quadratic form with bounded coefficients

If a bilinear form is non-singular, is the associated quadratic form also non singular?

How to transform $ax^2+bx+c$ into $p(x-h)^2 +k$?

Determinant of a quadratic form.

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