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Found 99 Documents (Results 1–99)

Which weighted composition operators are complex symmetric? (English) Zbl 1343.47034

Cepedello Boiso, Manuel (ed.) et al., Concrete operators, spectral theory, operators in harmonic analysis and approximation. 22nd international workshop in operator theory and its applications, IWOTA 11, Sevilla, Spain, July 3–9, 2011. Basel: Birkhäuser/Springer (ISBN 978-3-0348-0647-3/hbk; 978-3-0348-0648-0/ebook). Operator Theory: Advances and Applications 236, 171-179 (2014).
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Operators of the \(q\)-oscillator. (English) Zbl 1161.47017

Bozejko, Marek (ed.) et al., Noncommutative harmonic analysis with applications to probability. Papers presented at the 9th workshop, Bȩdlewo, Poland, September 29–October 10, 2006. Warsaw: Polish Academy of Sciences, Institute of Mathematics. Banach Center Publications 78, 293-307 (2008).
MSC:  47B20 47N50 81S05
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On normal extensions of unbounded operators. IV: A matrix construction. (English) Zbl 1106.47021

Langer, Matthias (ed.) et al., Operator theory and indefinite inner product spaces. Presented on the occasion of the retirement of Heinz Langer in the colloquium on operator theory, Vienna, March 2004. Basel: Birkhäuser (ISBN 3-7643-7515-9/hbk). Operator Theory: Advances and Applications 163, 337-350 (2006).
MSC:  47B15 47B20 47A20
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A matrix algorithm towards subnormality of unbounded operators. (English) Zbl 1112.47016

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, 185-187 (2005).
MSC:  47B20 47A20
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Subnormality and cyclicity. (English) Zbl 1080.47024

Jarosz, Krzysztof (ed.) et al., Topological algebras, their applications, and related topics. Proceedings of the conference to celebrate the 70th birthday of Professor Wiesław Żelazko, Bȩdlewo, Poland, May 11–17, 2003. Warsaw: Polish Academy of Sciences, Institute of Mathematics. Banach Center Publications 67, 349-356 (2005).
MSC:  47B20 47B15 47A16
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Operator moment problems in unbounded sets. (English) Zbl 1011.47012

Kérchy, László (ed.) et al., Recent advances in operator theory and related topics. The Béla Szőkefalvi-Nagy memorial volume. Proceedings of the memorial conference, Szeged, Hungary, August 2-6, 1999. Basel: Birkhäuser. Oper. Theory, Adv. Appl. 127, 613-638 (2001).
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Inequalities for semibounded operators and their applications to log-hyponormal operators. (English) Zbl 0995.47011

Kérchy, László (ed.) et al., Recent advances in operator theory and related topics. The Béla Szőkefalvi-Nagy memorial volume. Proceedings of the memorial conference, Szeged, Hungary, August 2-6, 1999. Basel: Birkhäuser. Oper. Theory, Adv. Appl. 127, 599-611 (2001).
MSC:  47A63 47B20 47B25
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On (semi)groups having empty resolvent set. (English) Zbl 0817.47031

Clément, Philippe (ed.) et al., Evolution equations, control theory, and biomathematics. 3rd international workshop-conference, held at the Han-sur-Lesse Conference Center of the Belgian Ministry of Education. Proceedings. Basel: Dekker. Lect. Notes Pure Appl. Math. 155, 553-556 (1993).
MSC:  47B20 47D06 46E22
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Hilbert spaces and operator theory. Transl. by Marcin E. Kuczma from the 4th Polish ed. (English) Zbl 0745.47001

Mathematics and Its Applications. East European Series. 51. Dordrecht etc., Warsaw: Kluwer Academic Publishers, PWN-Polish Scientific Publishers. x, 290 p. (1991).
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