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Статьи
Entries of indefinite Nevanlinna matrices
H. Woracek Institut for Analysis and Scientific Computing, Vienna University of Technology, Wiedner Hauptstraße, 8--10/101, 1040, Wien, Austria
Аннотация:
In the early 1950's, M. G. Krein characterized the entire functions that are an entry of some Nevanlinna matrix, and the pairs of entire functions that are a row of some Nevanlinna matrix. In connection with Pontryagin space versions of Krein's theory of entire operators and de Branges' theory of Hilbert spaces of entire functions, an indefinite analog of the Nevanlinna matrices plays a role. In the paper, the above-mentioned characterizations are extended to the indefinite situation and the geometry of the associated reproducing kernel Pontryagin spaces is investigated.
Ключевые слова:
Nevanlinna matrix, Pontryagin space, entire function, Krein class.
Поступила в редакцию: 26.07.2013
Образец цитирования:
H. Woracek, “Entries of indefinite Nevanlinna matrices”, Алгебра и анализ, 26:5 (2014), 88–124; St. Petersburg Math. J., 26:5 (2015), 757–783
Образцы ссылок на эту страницу:
https://www.mathnet.ru/rus/aa1398 https://www.mathnet.ru/rus/aa/v26/i5/p88
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