The inverse spectral problem for selfadjoint Hankel operators
A characterization of selfadjoint operators that are unitarily equivalent to a Hankel operator is obtained. This problem is closely connected with the theory of a stationary processes and the theory of linear dynamical systems with one-dimensional input and one-dimensional output. The connection between the considered problem and the balanced realization is described.
unitarily equivalent to a Hankel operator
scientific article; zbMATH DE number 811808
scientific article