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Found 137 Documents (Results 1–100)

On the existence of an operator group generated by the one-dimensional Dirac system. (English. Russian original) Zbl 1443.47045

Trans. Mosc. Math. Soc. 2019, 235-250 (2019); translation from Tr. Mosk. Mat. O.-va 80, No. 2, 275-294 (2019).
MSC:  47D03 34L40
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Analyticity of semigroups related to a class of block operator matrices. (English) Zbl 1206.47036

Grobler, J.J. (ed.) et al., Operator algebras, operator theory and applications. Proceedings of the 18th international workshop on operator theory and applications (IWOTA), Potchefstroom, South Africa, July 3–6, 2007. Basel: Birkhäuser (ISBN 978-3-0346-0173-3/hbk; 978-3-0346-0174-0/ebook). Operator Theory: Advances and Applications 195, 257-271 (2010).
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Stability of operator semigroups: ideas and results. (English) Zbl 1136.47026

Arendt, Wolfgang (ed.) et al., Perspectives in operator theory. Papers of the workshop on operator theory, Warsaw, Poland, April 19–May 3, 2004. Warsaw: Polish Academy of Sciences, Institute of Mathematics. Banach Center Publications 75, 71-109 (2007).
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Bounds for contractive semigroups and second-order systems. (English) Zbl 1110.47031

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, 293-308 (2006).
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Join spaces of linear ordinary differential operators of the second order. (English) Zbl 1104.47304

Bartušek, Miroslav (ed.) et al., Colloquium on differential and difference equations, CDDE 2002. Proceedings of the colloquium held in Brno, Czech Republic, September 4–6, 2002. Brno: Masaryk University (ISBN 80-210-3149-2/pbk). Folia Facultatis Scientiarum Naturalium Universitatis Masarykianae Brunensis. Mathematica 13, 77-86 (2003).
MSC:  47D03 47E05 34A30
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Conditions for the uniform well-posedness of the Cauchy problem for an equation with variable operator in a Hilbert space. (English. Russian original) Zbl 0639.47036

Sib. Math. J. 28, No. 1-2, 216-220 (1987); translation from Sib. Mat. Zh. 28, No. 2(162), 50-54 (1987).
Reviewer: O.John
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