Hankel matrix

In linear algebra, a Hankel matrix is a square matrix with constant (positive sloping) skew-diagonals, i.e;

In mathematical terms:

The Hankel matrix is closely related to the Toeplitz matrix (a Hankel matrix is an upside-down Toeplitz matrix).

Hankel matrices have been named after Hermann Hankel (1839-1873), a german mathematician, who studied and worked with, among others, Möbius, Riemann, Weierstrass and Kronecker.