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Found 193 Documents (Results 1–100)

Self-adjoint extensions of a symmetric linear relation with finite defect: compressions and Straus subspaces. (English) Zbl 07310481

Alpay, Daniel (ed.) et al., Complex function theory, operator theory, Schur analysis and systems theory. A volume in honor of V. E. Katsnelson. Cham: Birkhäuser. Oper. Theory: Adv. Appl. 280, 287-325 (2020).
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Regular extensions and defect functions of contractive measurable operator-valued functions. (English) Zbl 07310479

Alpay, Daniel (ed.) et al., Complex function theory, operator theory, Schur analysis and systems theory. A volume in honor of V. E. Katsnelson. Cham: Birkhäuser. Oper. Theory: Adv. Appl. 280, 139-228 (2020).
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Matrix functions of bounded type: an interplay between function theory and operator theory. (English) Zbl 1445.30001

Memoirs of the American Mathematical Society 1253. Providence, RI: American Mathematical Society (AMS) (ISBN 978-1-4704-3624-7/pbk; 978-1-4704-5323-7/ebook). v, 100 p. (2019).
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Finite-dimensional self-adjoint extensions of a symmetric operator with finite defect and their compressions. (English) Zbl 06864062

Colombo, Fabrizio (ed.) et al., Advances in complex analysis and operator theory. Festschrift in honor of Daniel Alpay’s 60th birthday. Contributions partly based on the presentations at the international conference on complex analysis and operator theory, Chapman University, Orange, CA, USA, November 2016. Cham: Birkhäuser/Springer. Trends Math., 135-163 (2017).
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Realization of Herglotz-Nevanlinna functions by conservative systems. (English) Zbl 1435.47020

Alpay, Daniel (ed.), Operator theory. With 51 figures and 2 tables. In 2 volumes. Springer Reference. Basel: Springer. 779-809 (2015).
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Boundary triplets and Weyl functions. Recent developments. (English) Zbl 1320.47024

Hassi, Seppo (ed.) et al., Operator methods for boundary value problems. Cambridge: Cambridge University Press (ISBN 978-1-107-60611-1/pbk; 978-1-139-13506-1/ebook). London Mathematical Society Lecture Note Series 404, 161-220 (2012).
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Accretive (\(*\))-extensions and realization problems. (English) Zbl 1253.47006

Arendt, Wolfgang (ed.) et al., Spectral theory, mathematical system theory, evolution equations, differential and difference equations. Selected papers of 21st international workshop on operator theory and applications, IWOTA10, Berlin, Germany, July 12–16, 2010. Basel: Birkhäuser (ISBN 978-3-0348-0296-3/hbk; 978-3-0348-0297-0/ebook). Operator Theory: Advances and Applications 221, 71-108 (2012).
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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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On extensions of indefinite Toeplitz-Krein-Cotlar triplets. (English) Zbl 1210.47060

Ball, Joseph A. (ed.) et al., Topics in operator theory. Volume 1: Operators, matrices and analytic functions. Proceedings of the 19th international workshop on operator theory and applications (IWOTA), College of William and Mary, Williamsburg, VA, USA, July 22–26, 2008. A tribute to Israel Gohberg on the occasion of his 80th birthday. Basel: Birkhäuser (ISBN 978-3-0346-0157-3/hbk; 978-3-0346-0163-4/set; 978-3-0346-0158-0/ebook). Operator Theory: Advances and Applications 202, 53-61 (2010).
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On the theory of passive resistance systems with losses of scattering channels. (To the theory of passive resistance systems with losses of scattering channels.) (English. Russian original) Zbl 1196.47011

J. Math. Sci., New York 156, No. 5, 742-760 (2009); translation from Zap. Nauchn. Semin. POMI 355, 37-71 (2008).
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Relaxed commutant lifting: an equivalent version and a new application. (English) Zbl 1166.47016

Ando, Tsuyoshi (ed.) et al., Recent advances in operator theory and applications. Proceedings of the international workshop on operator theory and applications (IWOTA), Seoul, Korea, July 31–August 3, 2006. Basel: Birkhäuser (ISBN 978-3-7643-8892-8/hbk). Operator Theory: Advances and Applications 187, 157-168 (2009).
MSC:  47A20 47A57 30D55 47B38 47A56
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Dilations on locally Hilbert spaces. (English) Zbl 1217.47031

Cobzaş, Ştefan (ed.), Topics in mathematics, computer science and philosophy. A Festschrift for Wolfgang W. Breckner on his 65th anniversary. Cluj-Napoca: Cluj University Press (ISBN 978-973-610-672-9). 107-122 (2008).
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A generalization to ordered groups of a Kreĭn theorem. (English) Zbl 1156.47016

Ball, Joseph A. (ed.) et al., Recent advances in matrix and operator theory. Proceedings of the 16th international workshop on operator theory and applications, IWOTA, Storrs, CT, USA, 2005. Basel: Birkhäuser (ISBN 978-3-7643-8538-5/hbk). Operator Theory: Advances and Applications 179, 103-109 (2008).
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Analytic functions of a uniformly stable \(\mathcal C_{\rho}\)-contraction. (English) Zbl 1199.47081

Davidson, Kenneth R. (ed.) et al., Operator theory 20. Proceedings of the 20th international conference on operator theory, Timişoara, Romania, June 30–July 5, 2004. Bucharest: Theta (ISBN 978-973-85432-9-4; 973-85432-9-0). Theta Series in Advanced Mathematics 6, 55-73 (2006).
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Selfadjoint extensions with several gaps: finite deficiency indices. (English) Zbl 1112.47010

Förster, Karl-Heinz (ed.) et al., Operator theory in Krein spaces and nonlinear eigenvalue problems. Selected papers of the 3rd workshop, TU Berlin, Germany, December 12–14, 2003. Basel: Birkhäuser (ISBN 3-7643-7452-7/hbk). Operator Theory: Advances and Applications 162, 85-101 (2006).
MSC:  47A56 47B25
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Boundary relations and orthogonal coupling of symmetric operators. (English) Zbl 1110.47007

Proceedings of the algorithmic information theory conference, Vaasa, Finland, May 16–18, 2005. Vaasa: Vaasan Yliopisto (ISBN 952-476-124-6/pbk). Vaasan Yliopiston Julkaisuja. Selvityksiä ja Raportteja 124, 41-56 (2005).
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Multivariable \(\rho\)-contractions. (English) Zbl 1092.47004

Kaashoek, Marinus A. (ed) et al., Recent advances in operator theory and its applications. The Israel Gohberg anniversary volume. Selected papers of the 14th international workshop on operator theory and its applications, IWOTA 2003, Cagliari, Italy, June 24–27, 2003. Basel: Birkhäuser (ISBN 3-7643-7290-7/hbk). Operator Theory: Advances and Applications 160, 273-298 (2005).
MSC:  47A13 47A20 47A56
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The model theory of compact complex spaces. (English) Zbl 1081.03040

Baaz, Matthias (ed.) et al., Logic colloquium ’01. Proceedings of the annual European summer meeting of the Association for Symbolic Logic (ASL), Vienna, Austria, August 6–11, 2001. Wellesley, MA: A K Peters; Urbana, IL: Association for Symbolic Logic (ISBN 1-56881-247-7/hbk; 1-56881-248-5/pbk). Lecture Notes in Logic 20, 317-349 (2005).
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