Diagonal Quadric Form
95335
diagonalize quadratic form
22933
Closed-form solution for the determinant of a Vandermonde-like matrix
129454
Solution to a quadratic form
489
How to take the gradient of the quadratic form?
62878
Expressing polar complex numbers in cartesian form
114923
Speeding up generation of block diagonal matrix
40517
Determinant of a non-square matrix
69849
How to solve 5x5 grid with 16 diagonals?
88051
$\mathbb R = X^2$ as a Cartesian product
136019
Vector bundle on a quadric $Q$
82056
Quadrilateral problem with midpoints of diagonals
103778
Geometric interpretation of connection forms, torsion forms, curvature forms, etc
37060
The Parallelogram Identity for an inner product space
80161
linear algebra - Compute matrix associated to quadratic form.
107992
Bilinear form with symmetric "perpendicular" relation is either symmetric or skew-symmetric
56433
Volume form on $(n-1)$-sphere $S^{n-1}$
40222
Matrices that are not diagonal or triangular, whose eigenvalues are the diagonal elements