Wiener–Hopf indices of unitary functions on the unit circle in terms of realizations and related results on Toeplitz operators

Autor: Groenewald, G.J., Kaashoek, M.A., Ran, A.C.M.
Zdroj: In Indagationes Mathematicae June 2017 28(3):694-710
Databáze: ScienceDirect