Beurling-Lax type theorems and Cuntz relations

Autor: Alpay, D., Colombo, F., Sabadini, I., Schneider, B.
Rok vydání: 2021
Předmět:
Zdroj: Linear Algebra Appl. 633 (2022) 152-212
Druh dokumentu: Working Paper
DOI: 10.1016/j.laa.2021.10.008
Popis: We prove various Beurling-Lax type theorems, when the classical backward-shift operator is replaced by a general resolvent operator associated with a rational function. We also study connections to the Cuntz relations. An important tool is a new representation result for analytic functions, in terms of composition and multiplication operators associated with a given rational function. Applications to the theory of de Branges-Rovnyak spaces, also in the indefinite metric setting, are given.
Databáze: arXiv