Question

Can we find $n$ Pythagorean triples with a common leg for any $n$?

score 146 · Answer 1 · 2026-05-07 12:48:33

146

Views

Can we find $n$ Pythagorean triples with a common leg for any $n$?

Published on 07 May 2026 - 12:48

score 86 · Answer 2 · 2026-04-29 12:18:09

86

Views

Questions on positivity of quadratic form with orthogonal constraints

Published on 29 Apr 2026 - 12:18

score 280 · Answer 3 · 2026-05-07 19:15:35

280

Views

How does positive (semi)definiteness help with showing convexity of quadratic forms?

Published on 07 May 2026 - 19:15

score 242 · Answer 4 · 2026-05-01 12:19:15

242

Views

Equivalence of integral primitive indefinite binary quadratic forms

Published on 01 May 2026 - 12:19

score 207 · Answer 5 · 2026-05-07 18:18:28

207

Views

Signs of eigenvalues of $3$ by $3$ matrix

Published on 07 May 2026 - 18:18

score 356 · Answer 6 · 2026-05-10 11:48:04

356

Views

Homogeneous quadratic in $n$ variables has nonzero singular point iff associated symmetric matrix has zero determinant.

Published on 10 May 2026 - 11:48

score 291 · Answer 7 · 2026-05-04 04:31:41

291

Views

Trace form and totally real number fields

Published on 04 May 2026 - 4:31

score 215 · Answer 8 · 2026-04-29 12:16:49

215

Views

Let $f(x) = x^\top Q \, x$, where $Q \in \mathbb R^{n×n}$ is NOT symmetric. Show that the Hessian is $H_f (x) = Q + Q^\top$

Published on 29 Apr 2026 - 12:16

score 67 · Answer 9 · 2026-04-29 12:42:53

67

Views

Graph of curve defined by $3x^2+3y^2-2xy-2=0$

Published on 29 Apr 2026 - 12:42

score 72 · Answer 10 · 2026-05-03 20:06:36

72

Views

Question on quadratic forms of dimension 3

Published on 03 May 2026 - 20:06

score 768 · Answer 11 · 2026-05-03 00:14:16

768

Views

Can the Gram-Schmidt algorithm be extended to construct a basis for $T_p M$ of a semi-Riemannian manifold?

Published on 03 May 2026 - 0:14

score 1.8k · Answer 12 · 2026-05-10 12:32:55

1.8k

Views

Do we discuss quadratic form of complex matrix?

Published on 10 May 2026 - 12:32

score 955 · Answer 13 · 2026-05-10 12:35:43

955

Views

Prove $\max_X tr(X^TAX) = $ k largest eigenvalues of $A$ for real, symmetric $A$ and $X^TX=I$

Published on 10 May 2026 - 12:35

score 1.4k · Answer 14 · 2026-05-10 12:37:41

1.4k

Views

Find k for Positive Definite Quadratic Form

Published on 10 May 2026 - 12:37

score 226 · Answer 15 · 2026-05-10 12:34:36

226

Views

Quadratic Form of the product of two matrices

Published on 10 May 2026 - 12:34

List Question

Can we find $n$ Pythagorean triples with a common leg for any $n$?

Questions on positivity of quadratic form with orthogonal constraints

How does positive (semi)definiteness help with showing convexity of quadratic forms?

Equivalence of integral primitive indefinite binary quadratic forms

Signs of eigenvalues of $3$ by $3$ matrix

Homogeneous quadratic in $n$ variables has nonzero singular point iff associated symmetric matrix has zero determinant.

Trace form and totally real number fields

Let $f(x) = x^\top Q \, x$, where $Q \in \mathbb R^{n×n}$ is NOT symmetric. Show that the Hessian is $H_f (x) = Q + Q^\top$

Graph of curve defined by $3x^2+3y^2-2xy-2=0$

Question on quadratic forms of dimension 3

Can the Gram-Schmidt algorithm be extended to construct a basis for $T_p M$ of a semi-Riemannian manifold?

Do we discuss quadratic form of complex matrix?

Prove $\max_X tr(X^TAX) = $ k largest eigenvalues of $A$ for real, symmetric $A$ and $X^TX=I$

Find k for Positive Definite Quadratic Form

Quadratic Form of the product of two matrices

Trending Questions

Popular # Hahtags

Popular Questions