Entire Isometric Operators in de Branges–Pontryagin Spaces and Truncated Trigonometric Moment Problem

We develop two functional models for closed isometric entire operators V with finite deficiency indices (p, p) acting in a separable Pontryagin space K. In the first functional model it is shown that every such operator V is unitarily equivalent to a restriction TE of the backward shift operator in...

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Bibliographic Details

Published in:	Complex analysis and operator theory Vol. 19; no. 5; p. 108
Main Authors:	Derkach, Volodymyr, Dym, Harry
Format:	Journal Article
Language:	English
Published:	Heidelberg Springer Nature B.V 01.07.2025
Subjects:	Eigenvalues Entire functions Functionals Operators
ISSN:	1661-8254, 1661-8262
Online Access:	Get full text
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