List questions from quadratic-forms

Published on 13 Jun 2018 - 19:59

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I know 3 sides of a triangle and I'm trying to find the angles

Published on 14 Jun 2018 - 0:25

302

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Group structure on the Dirichlet binary composition of quadratic forms

Published on 27 Feb 2026 - 23:45

162

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Why is $\max_{c^TBc=1}c^T a a^Tc =a^TB^{-1}a$?

Published on 17 Mar 2026 - 16:26

122

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How can I determine whether a quadratic form is "almost universal"?

Published on 26 Jun 2018 - 12:41

1.6k

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Find the set of primes $p$ which $6$ is a quadratic residue $\mod p$

Published on 17 Mar 2026 - 11:59

1.3k

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Convexity of the Root of a Sum of Quadratic Forms

Published on 29 Jun 2018 - 9:20

43

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Genus of $f(x,y,z) = x^2+y^2+7z^2$

Published on 01 Jul 2018 - 3:30

75

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How to convert from a quadratic form to canonical, when there's no squared unknown?

Published on 23 Mar 2026 - 10:41

42

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Solution of a quadratic matrix equation

Published on 05 Jul 2018 - 15:20

51

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if $x^TAx=0$ can it be proven that det(A)=0

Published on 06 Jul 2018 - 7:04

714

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The set of integers $n$ expressible as $n=x^2+xy+y^2$

Published on 19 Mar 2026 - 20:10

611

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How to convert the given data to a quadratic polynomial form?

Published on 08 Jul 2018 - 1:59

478

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Primitive binary quadratic forms.

Published on 09 Jul 2018 - 9:02

73

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primitive binary quadratic forms and the number of automorphs.

Published on 10 Jul 2018 - 11:28

List Question

Quadratic forms and orthogonal complement

I know 3 sides of a triangle and I'm trying to find the angles

Group structure on the Dirichlet binary composition of quadratic forms

Why is $\max_{c^TBc=1}c^T a a^Tc =a^TB^{-1}a$?

How can I determine whether a quadratic form is "almost universal"?

Find the set of primes $p$ which $6$ is a quadratic residue $\mod p$

Convexity of the Root of a Sum of Quadratic Forms

Genus of $f(x,y,z) = x^2+y^2+7z^2$

How to convert from a quadratic form to canonical, when there's no squared unknown?

Solution of a quadratic matrix equation

if $x^TAx=0$ can it be proven that det(A)=0

The set of integers $n$ expressible as $n=x^2+xy+y^2$

How to convert the given data to a quadratic polynomial form?

Primitive binary quadratic forms.

primitive binary quadratic forms and the number of automorphs.

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