Abstract:
Criteria for the representability of meromorphic second-order matrix functions $J$-expanding in the upper half-plane (de Branges matrices) as left, right, and two-sided Blaschke–Potapov products are stated. Results on the spectral structure of operators whose characteristic matrix functions are de Branges matrices are obtained.
Citation:
G. M. Gubreev, A. A. Tarasenko, “Representability of de Branges Matrices as Blaschke–Potapov Products and Completeness of Some Families of Functions”, Mat. Zametki, 73:6 (2003), 841–847; Math. Notes, 73:6 (2003), 796–801
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\by G.~M.~Gubreev, A.~A.~Tarasenko
\paper Representability of de Branges Matrices as Blaschke--Potapov Products and Completeness of Some Families of Functions
\jour Mat. Zametki
\yr 2003
\vol 73
\issue 6
\pages 841--847
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\jour Math. Notes
\yr 2003
\vol 73
\issue 6
\pages 796--801
\crossref{https://doi.org/10.1023/A:1024045712587}
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Linking options:
https://www.mathnet.ru/eng/mzm231
https://doi.org/10.4213/mzm231
https://www.mathnet.ru/eng/mzm/v73/i6/p841
This publication is cited in the following 2 articles:
G. M. Gubreev, A. A. Tarasenko, “Spectral decomposition of model operators in de Branges spaces”, Sb. Math., 201:11 (2010), 1599–1634
Kaltenback M., Woracek H., “Schmidt-Representation of Difference Quotient Operators”, Extended Field of Operator Theory, Operator Theory : Advances and Applications, 171, ed. Dritschel M., Birkhauser Verlag Ag, 2007, 147–170