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Found 428 Documents (Results 1–100)

Nevanlinna characteristic and integral inequalities with maximal radial characteristic for meromorphic functions and for differences of subharmonic functions. (English. Russian original) Zbl 1515.30081

St. Petersbg. Math. J. 34, No. 2, 247-270 (2023); translation from Algebra Anal. 34, No. 2, 152-184 (2022).
MSC:  30D35 31A05
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Congruence of selfadjoint operators and transformations of operator-valued Nevanlinna functions. (English) Zbl 1506.47033

de Snoo, H. S. V. (ed.) et al., Contributions to mathematics and statistics. Essays in honor of Seppo Hassi. Vaasa: University of Vaasa, School of Technology and Innovation. Acta Wasaensia 462, 1-14 (2021).
MSC:  47B25 47A48 47A56
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All solutions to an operator Nevanlinna-Pick interpolation problem. (English) Zbl 1470.47017

Duduchava, Roland (ed.) et al., Operator theory in different settings and related applications, 26th international workshop on operator theory and its applications, IWOTA, Tbilisi, Georgia, July 6–10, 2015. Cham: Birkhäuser. Oper. Theory: Adv. Appl. 262, 139-220 (2018).
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On unimodular transformations of conservative \(L\)-systems. (English) Zbl 1402.81147

Alpay, Daniel (ed.) et al., Indefinite inner product spaces, Schur analysis, and differential equations. A volume dedicated to Heinz Langer. Cham: Birkhäuser (ISBN 978-3-319-68848-0/hbk; 978-3-319-68849-7/ebook). Operator Theory: Advances and Applications 263. Linear Operators and Linear Systems, 191-215 (2018).
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Nevanlinna’s characteristic functions with complex Hessian potential. (English) Zbl 1351.32006

Ibragimov, Zair (ed.) et al., Topics in several complex variables. First USA-Uzbekistan conference on analysis and mathematical physics, California State University, Fullerton, CA, USA, May 20–23, 2014. Proceedings. Providence, RI: American Mathematical Society (AMS) (ISBN 978-1-4704-1927-1/pbk; 978-1-4704-3001-6/ebook). Contemporary Mathematics 662, 97-105 (2016).
MSC:  32A22 31C10 32U05
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Shining a Hilbertian lamp on the bidisk. (English) Zbl 1275.47029

Blasco, Óscar (ed.) et al., Topics in complex analysis and operator theory. Third winter school in complex analysis and operator theory, Valencia, Spain, February 2–5, 2010. Providence, RI: American Mathematical Society (AMS) (ISBN 978-0-8218-5275-0/pbk). Contemporary Mathematics 561, 49-65 (2012).
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Nevanlinna characteristics and defective values of the Weierstrass zeta function. (English. Russian original) Zbl 1244.30059

Ukr. Math. J. 63, No. 5, 838-841 (2011); translation from Ukr. Mat. Zh. 63, No. 5, 718-720 (2011).
MSC:  30D35 30D15
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Conservative realizations of Herglotz-Nevanlinna functions. (English) Zbl 1240.47001

Operator Theory: Advances and Applications 217. Basel: Birkhäuser (ISBN 978-3-7643-9995-5/hbk; 978-3-7643-9996-2/ebook). xviii, 528 p. (2011).
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