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Found 100 Documents (Results 1–100)

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Caliceti, Emanuela; Graffi, Sandro

Convergent quantum normal forms, \(\mathcal PT\)-symmetry and reality of the spectrum. (English) Zbl 1274.70025

Atti Accad. Naz. Lincei, Cl. Sci. Fis. Mat. Nat., IX. Ser., Rend. Lincei, Mat. Appl. 24, No. 3, 385-407 (2013).
MSC:  70H09 81Q12 81Q15 81Q20
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\textit{E. Caliceti} and \textit{S. Graffi}, Atti Accad. Naz. Lincei, Cl. Sci. Fis. Mat. Nat., IX. Ser., Rend. Lincei, Mat. Appl. 24, No. 3, 385--407 (2013; Zbl 1274.70025)
Full Text: DOI arXiv
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Lotoreichik, Vladimir; Rohleder, Jonathan

Schatten-von Neumann estimates for resolvent differences of Robin Laplacians on a half-space. (English) Zbl 1287.47038

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, 453-468 (2012).
Reviewer: Stefan Neuwirth (Besançon)
MSC:  47F05 35J05 47B10 35P20
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\textit{V. Lotoreichik} and \textit{J. Rohleder}, Oper. Theory: Adv. Appl. 221, 453--468 (2012; Zbl 1287.47038)
Full Text: DOI arXiv
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Baskakov, A. G.; Derbushev, A. V.; Shcherbakov, A. O.

The method of similar operators in the spectral analysis of non-self-adjoint Dirac operators with non-smooth potentials. (English. Russian original) Zbl 1219.47024

Izv. Math. 75, No. 3, 445-469 (2011); translation from Izv. Ross. Akad. Nauk, Ser. Mat. 2011, No. 3, 3-28 (2011).
MSC:  47A55 47B40 34L10 34L20 34L40
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\textit{A. G. Baskakov} et al., Izv. Math. 75, No. 3, 445--469 (2011; Zbl 1219.47024); translation from Izv. Ross. Akad. Nauk, Ser. Mat. 2011, No. 3, 3--28 (2011)
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Boulton, Lyonell; Levitin, Michael; Marletta, Marco

On a class of nonselfadjoint periodic boundary value problems with discrete real spectrum. (English) Zbl 1259.47060

Levitin, Michael (ed.) et al., Operator theory and its applications. In memory of V. B. Lidskiĭ (1924–2008). Providence, RI: American Mathematical Society (AMS) (ISBN 978-0-8218-5272-9/hbk). Translations. Series 2. American Mathematical Society 231; Advances in the Mathematical Sciences 65, 59-66 (2010).
Reviewer: Zhaowen Zheng (Qufu)
MSC:  47E05 34B24 76R99
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\textit{L. Boulton} et al., Transl., Ser. 2, Am. Math. Soc. 231, 59--66 (2010; Zbl 1259.47060)
Full Text: arXiv
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Karabash, I. M.

A functional model, eigenvalues, and finite singular critical points for indefinite Sturm-Liouville operators. (English) Zbl 1206.47040

Ball, Joseph A. (ed.) et al., Topics in operator theory. Volume 2: Systems and mathematical physics. 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 978-3-0346-0160-3/hbk; 978-3-0346-0163-4/set; 978-3-0346-0161-0/ebook). Operator Theory: Advances and Applications 203, 247-287 (2010).
Reviewer: Michael I. Gil’ (Beer-Sheva)
MSC:  47E05 34B24 34B09 34L10 47B50
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\textit{I. M. Karabash}, Oper. Theory: Adv. Appl. 203, 247--287 (2010; Zbl 1206.47040)
Full Text: arXiv
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Ergun, Ebru; Guseinov, Gusein Sh.

On the eigenvalues of a non-selfadjoint second order difference operator. (English) Zbl 1172.39027

Bohner, Martin (ed.) et al., Difference equations and applications. Proceedings of the fourteenth international conference on difference equations and applications (ICDEA), Istanbul, Turkey, July 21–25, 2008. Istanbul: Bahçeşehir University Press (ISBN 978-975-6437-80-3/pbk). 179-186 (2009).
MSC:  39A70 39A12 34L05
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\textit{E. Ergun} and \textit{G. Sh. Guseinov}, in: Difference equations and applications. Proceedings of the fourteenth international conference on difference equations and applications (ICDEA), Istanbul, Turkey, July 21--25, 2008. Istanbul: Bahçeşehir University Press. 179--186 (2009; Zbl 1172.39027)
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Gesztesy, Fritz; Mitrea, Marius; Zinchenko, Maxim

On Dirichlet-to-Neumann maps and some applications to modified Fredholm determinants. (English) Zbl 1169.47014

Janas, Jan (ed.) et al., Methods of spectral analysis in mathematical physics. Conference on operator theory, analysis and mathematical physics (OTAMP), Lund, Sweden, June 15–22, 2006. Basel: Birkhäuser (ISBN 978-3-7643-8754-9/hbk). Operator Theory: Advances and Applications 186, 191-215 (2009).
Reviewer: Josef Wloka (Kiel)
MSC:  47B10 47G10 34B27 34L40
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\textit{F. Gesztesy} et al., Oper. Theory: Adv. Appl. 186, 191--215 (2009; Zbl 1169.47014)
Full Text: arXiv
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Gal’tsev, S. V.; Shafarevich, A. I.

Spectrum and pseudospectrum of non-self-adjoint Schrödinger operators with periodic coefficients. (English. Russian original) Zbl 1128.47042

Math. Notes 80, No. 3, 345-354 (2006); translation from Mat. Zametki 80, No. 3, 456-466 (2006).
Reviewer: John Schmeelk (Doha)
MSC:  47E05 34L40 47A10
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\textit{S. V. Gal'tsev} and \textit{A. I. Shafarevich}, Math. Notes 80, No. 3, 345--354 (2006; Zbl 1128.47042); translation from Mat. Zametki 80, No. 3, 456--466 (2006)
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Hager, Mildred

Semiclassical spectral instability of non-self-adjoint operators: an example. (Instabilité spectrale semiclassique d’opérateurs non-autoadjoints: un exemple.) (French) Zbl 1292.47029

Sémin. Équ. Dériv. Partielles, Éc. Polytech., Cent. Math. Laurent Schwartz, Palaiseau 2004-2005, Exp. No. 6, 12 p. (2005).
MSC:  47E05 47A55 81Q20 81Q12 81Q15
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\textit{M. Hager}, Sémin. Équ. Dériv. Partielles, Éc. Polytech., Cent. Math. Laurent Schwartz, Palaiseau 2004--2005, Exp. No. 6, 12 p. (2005; Zbl 1292.47029)
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Shubov, Marianna A.

Nonselfadjoint spectral operators and their application to control theory. (English) Zbl 0977.47025

Corduneanu, C. (ed.) et al., Volterra equations and applications. Proceedings of the Volterra centennial symposium, University of Texas, Arlington, TX, USA, May 23-25, 1996. London: Gordon and Breach Science Publishers. Stab. Control Theory Methods Appl. 10, 457-463 (2000).
Reviewer: W.D.Evans (Cardiff)
MSC:  47B40 47A10 93B60
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\textit{M. A. Shubov}, Stab. Control Theory Methods Appl. 10, 457--463 (2000; Zbl 0977.47025)
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Silbergleit, A. S.; Kopilevich, Yu. I.

Spectral theory of guided waves. Transl. from the Russian. (English) Zbl 0880.35121

Bristol: Institute of Physics Publishing. xix, 310 p. £100.00; $ 200.00 (1996).
Reviewer: M.Rodriguez Ricard (La Habana)
MSC:  35Q72 35P05 35-02 78-02 74-02 47A10 47A75
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\textit{A. S. Silbergleit} and \textit{Yu. I. Kopilevich}, Spectral theory of guided waves. Transl. from the Russian. Bristol: Institute of Physics Publishing (1996; Zbl 0880.35121)
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Pastur, L. A.; Tkachenko, V. A.

An inverse problem for a class of one-dimensional Schrödinger operators with a complex periodic potential. (English. Russian original) Zbl 0739.34022

Math. USSR, Izv. 37, No. 3, 611-629 (1991); translation from Izv. Akad. Nauk SSSR, Ser. Mat. 54, No. 6, 1252-1269 (1990).
MSC:  34A55 34L40 34B24
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\textit{L. A. Pastur} and \textit{V. A. Tkachenko}, Math. USSR, Izv. 37, No. 3, 611--629 (1990; Zbl 0739.34022); translation from Izv. Akad. Nauk SSSR, Ser. Mat. 54, No. 6, 1252--1269 (1990)
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Veliev, M. B.

On the spectrum and resolvent of non-selfadjoint multichannel systems with non-zero inner energies. (Russian) Zbl 0756.34081

Linear operators and their applications, Themat. Collect. Sci. Works, Baku, 26-31 (1989).
Reviewer: Z.G.Sheftel’ (Chernigov)
MSC:  34L05 34L30 34B15
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\textit{M. B. Veliev}, in: Linejnye operatory i ikh prilozheniya. Tematicheskij sbornik nauchnykh trudov. Baku: Izdatel'stvo Azerbajdzhanskogo Universiteta. 26--31 (1989; Zbl 0756.34081)
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Satybaldiev, O. S.

On completeness of the system of root subspaces of a higher order non- selfadjoint operator of the Schrödinger type. (Russian) Zbl 0792.47019

Gol’tser, Ya. M. (ed.), Studies on differential equations and their applications. Alma-Ata: Kazakhskij Pedagogicheskij Institut Im. Abaya, 22-26 (1989).
MSC:  47A70 47B25 47F05
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\textit{O. S. Satybaldiev}, in: Исследования по дифференциальным уравнениям и их приложения. Alma-Ata: Kazakhskij Pedagogicheskij Institut Im. Abaya. 22--26 (1989; Zbl 0792.47019)
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