Behrndt, Jussi; Schmitz, Philipp; Teschl, Gerald; Trunk, Carsten Perturbations of periodic Sturm-Liouville operators. (English) Zbl 1520.34078 Adv. Math. 422, Article ID 109022, 22 p. (2023). Reviewer: Erdoğan Şen (Tekirdağ) MSC: 34L05 81Q10 34L40 47E05 34B24 47A55 34L15 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Adv. Math. 422, Article ID 109022, 22 p. (2023; Zbl 1520.34078) Full Text: DOI arXiv
Behrndt, Jussi; Holzmann, Markus; Lotoreichik, Vladimir; Raikov, Georgi The fate of Landau levels under \(\delta\)-interactions. (English) Zbl 1515.81099 J. Spectr. Theory 12, No. 3, 1203-1234 (2022). MSC: 81Q10 47A10 47A55 47N50 PDFBibTeX XMLCite \textit{J. Behrndt} et al., J. Spectr. Theory 12, No. 3, 1203--1234 (2022; Zbl 1515.81099) Full Text: DOI arXiv
Behrndt, Jussi; Khrabustovskyi, Andrii Singular Schrödinger operators with prescribed spectral properties. (English) Zbl 1479.81023 J. Funct. Anal. 282, No. 1, Article ID 109252, 49 p. (2022). MSC: 81Q10 34L40 46F10 34L05 PDFBibTeX XMLCite \textit{J. Behrndt} and \textit{A. Khrabustovskyi}, J. Funct. Anal. 282, No. 1, Article ID 109252, 49 p. (2022; Zbl 1479.81023) Full Text: DOI arXiv
Behrndt, Jussi; Holzmann, Markus; Stelzer, Christian; Stenzel, Georg A class of singular perturbations of the Dirac operator: boundary triplets and Weyl functions. (English) Zbl 1506.47034 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, 15-35 (2021). Reviewer: Adnane Elmrabty (Guelmim) MSC: 47B25 47A55 34L40 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Acta Wasaensia 462, 15--35 (2021; Zbl 1506.47034)
Behrndt, Jussi; Holzmann, Markus; Mas, Albert Self-adjoint Dirac operators on domains in \(\mathbb{R}^3\). (English) Zbl 1454.81079 Ann. Henri Poincaré 21, No. 8, 2681-2735 (2020). Reviewer: Miyeon Kwon (Platteville) MSC: 81Q10 35Q40 81R20 81V35 81V05 81Q05 35F15 35B40 35P05 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Ann. Henri Poincaré 21, No. 8, 2681--2735 (2020; Zbl 1454.81079) Full Text: DOI arXiv
Behrndt, Jussi; Holzmann, Markus; Ourmières-Bonafos, Thomas; Pankrashkin, Konstantin Two-dimensional Dirac operators with singular interactions supported on closed curves. (English) Zbl 1446.35155 J. Funct. Anal. 279, No. 8, Article ID 108700, 46 p. (2020). MSC: 35Q41 81Q10 35S05 78A35 PDFBibTeX XMLCite \textit{J. Behrndt} et al., J. Funct. Anal. 279, No. 8, Article ID 108700, 46 p. (2020; Zbl 1446.35155) Full Text: DOI arXiv
Behrndt, Jussi; Schlosser, Peter Quasi boundary triples, self-adjoint extensions, and Robin Laplacians on the half-space. (English) Zbl 1425.35123 Alpay, Daniel (ed.) et al., Linear systems, signal processing and hypercomplex analysis. Selected papers of the conference on mathematics, signal processing and linear systems: new problems and directions, Chapman University, Orange, CA, USA, November 14–19, 2017. Cham: Birkhäuser. Oper. Theory: Adv. Appl. 275, 49-66 (2019). MSC: 35P05 47B25 47F05 PDFBibTeX XMLCite \textit{J. Behrndt} and \textit{P. Schlosser}, Oper. Theory: Adv. Appl. 275, 49--66 (2019; Zbl 1425.35123) Full Text: DOI arXiv
Behrndt, Jussi; Exner, Pavel; Holzmann, Markus; Lotoreichik, Vladimir On Dirac operators in \(\mathbb{R}^3\) with electrostatic and Lorentz scalar \(\delta\)-shell interactions. (English) Zbl 1423.81072 Quantum Stud. Math. Found. 6, No. 3, 295-314 (2019). MSC: 81Q10 81R20 81R25 35Q40 47B25 35P05 81Q20 47A10 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Quantum Stud. Math. Found. 6, No. 3, 295--314 (2019; Zbl 1423.81072) Full Text: DOI arXiv
Behrndt, Jussi; Gesztesy, Fritz; Nakamura, Shu Spectral shift functions and Dirichlet-to-Neumann maps. (English) Zbl 1417.35016 Math. Ann. 371, No. 3-4, 1255-1300 (2018). Reviewer: Petr Zemánek (Brno) MSC: 35J15 35J10 47B25 47A10 47A40 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Math. Ann. 371, No. 3--4, 1255--1300 (2018; Zbl 1417.35016) Full Text: DOI arXiv
Behrndt, Jussi; Langer, Matthias; Lotoreichik, Vladimir; Rohleder, Jonathan Spectral enclosures for non-self-adjoint extensions of symmetric operators. (English) Zbl 1472.47018 J. Funct. Anal. 275, No. 7, 1808-1888 (2018). Reviewer: Fernando Lledó (Madrid) MSC: 47B25 47B28 35P05 35J25 81Q12 35J10 34L40 81Q35 PDFBibTeX XMLCite \textit{J. Behrndt} et al., J. Funct. Anal. 275, No. 7, 1808--1888 (2018; Zbl 1472.47018) Full Text: DOI arXiv
Behrndt, Jussi; Derkach, Vladimir; Gesztesy, Fritz; Mitrea, Marius Coupling of symmetric operators and the third Green identity. (English) Zbl 1466.47017 Bull. Math. Sci. 8, No. 1, 49-80 (2018). Reviewer: Manfred Möller (Johannesburg) MSC: 47B25 47A10 47A57 58J05 58J32 47A55 58J50 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Bull. Math. Sci. 8, No. 1, 49--80 (2018; Zbl 1466.47017) Full Text: DOI arXiv
Behrndt, Jussi; Exner, Pavel; Holzmann, Markus; Lotoreichik, Vladimir On the spectral properties of Dirac operators with electrostatic \(\delta\)-shell interactions. (English. French summary) Zbl 1382.81095 J. Math. Pures Appl. (9) 111, 47-78 (2018). MSC: 81Q10 35Q40 35P05 47F05 47B25 47A10 PDFBibTeX XMLCite \textit{J. Behrndt} et al., J. Math. Pures Appl. (9) 111, 47--78 (2018; Zbl 1382.81095) Full Text: DOI arXiv
Behrndt, Jussi; Langer, Matthias; Lotoreichik, Vladimir; Rohleder, Jonathan Quasi boundary triples and semi-bounded self-adjoint extensions. (English) Zbl 1386.35290 Proc. R. Soc. Edinb., Sect. A, Math. 147, No. 5, 895-916 (2017). MSC: 35P15 47F05 35P05 47B25 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Proc. R. Soc. Edinb., Sect. A, Math. 147, No. 5, 895--916 (2017; Zbl 1386.35290) Full Text: DOI arXiv
Behrndt, Jussi; Langer, Matthias; Lotoreichik, Vladimir Trace formulae for Schrödinger operators with singular interactions. (English) Zbl 1372.81055 Dittrich, Jaroslav (ed.) et al., Functional analysis and operator theory for quantum physics. The Pavel Exner anniversary volume. Dedicated to Pavel Exner on the occasion of his 70th birthday. Zürich: European Mathematical Society (EMS) (ISBN 978-3-03719-175-0/hbk; 978-3-03719-675-5/ebook). EMS Series of Congress Reports, 129-152 (2017). MSC: 81Q10 46F10 47B10 PDFBibTeX XMLCite \textit{J. Behrndt} et al., in: Functional analysis and operator theory for quantum physics. The Pavel Exner anniversary volume. Dedicated to Pavel Exner on the occasion of his 70th birthday. Zürich: European Mathematical Society (EMS). 129--152 (2017; Zbl 1372.81055) Full Text: arXiv
Behrndt, Jussi; Exner, Pavel; Holzmann, Markus; Lotoreichik, Vladimir Approximation of Schrödinger operators with {\(\delta\)}-interactions supported on hypersurfaces. (English) Zbl 1376.35010 Math. Nachr. 290, No. 8-9, 1215-1248 (2017). Reviewer: Christian Seifert (Hamburg) MSC: 35J10 81Q10 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Math. Nachr. 290, No. 8--9, 1215--1248 (2017; Zbl 1376.35010) Full Text: DOI arXiv
Behrndt, Jussi; Frank, Rupert L.; Kühn, Christian; Lotoreichik, Vladimir; Rohleder, Jonathan Spectral theory for Schrödinger operators with \(\delta\)-interactions supported on curves in \(\mathbb {R}^3\). (English) Zbl 1378.81026 Ann. Henri Poincaré 18, No. 4, 1305-1347 (2017). Reviewer: Aurelian Gheondea (Bucureşti) MSC: 81Q05 46F10 35J10 47B25 35P05 81U20 47B10 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Ann. Henri Poincaré 18, No. 4, 1305--1347 (2017; Zbl 1378.81026) Full Text: DOI arXiv
Behrndt, Jussi; Gesztesy, Fritz; Nakamura, Shu A spectral shift function for Schrödinger operators with singular interactions. arXiv:1710.03367 Preprint, arXiv:1710.03367 [math.SP] (2017). MSC: 35J10 35J15 47A10 47A40 47B25 35P20 35P25 47A55 47B10 47F05 81Q10 BibTeX Cite \textit{J. Behrndt} et al., ``A spectral shift function for Schr\"{o}dinger operators with singular interactions'', Preprint, arXiv:1710.03367 [math.SP] (2017) Full Text: arXiv OA License
Behrndt, Jussi; Möws, Roland; Trunk, Carsten Eigenvalue estimates for operators with finitely many negative squares. (English) Zbl 1370.47045 Opusc. Math. 36, No. 6, 717-734 (2016). MSC: 47B50 47A55 47E05 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Opusc. Math. 36, No. 6, 717--734 (2016; Zbl 1370.47045) Full Text: DOI
Behrndt, J.; Langer, M.; Lotoreichik, V. Boundary triples for Schrödinger operators with singular interactions on hypersurfaces. (English) Zbl 1353.47043 Nanosyst., Phys. Chem. Math. 7, No. 2, 290-302 (2016). MSC: 47B25 35J10 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Nanosyst., Phys. Chem. Math. 7, No. 2, 290--302 (2016; Zbl 1353.47043) Full Text: DOI
Behrndt, Jussi; Rohleder, Jonathan Titchmarsh-Weyl theory for Schrödinger operators on unbounded domains. (English) Zbl 1381.35025 J. Spectr. Theory 6, No. 1, 67-87 (2016). MSC: 35J10 35P05 47F05 81Q10 PDFBibTeX XMLCite \textit{J. Behrndt} and \textit{J. Rohleder}, J. Spectr. Theory 6, No. 1, 67--87 (2016; Zbl 1381.35025) Full Text: DOI arXiv
Behrndt, Jussi; Leben, Leslie; Martínez Pería, Francisco; Möws, Roland; Trunk, Carsten Sharp eigenvalue estimates for rank one perturbations of nonnegative operators in Krein spaces. (English) Zbl 1341.47045 J. Math. Anal. Appl. 439, No. 2, 864-895 (2016). MSC: 47B50 47A55 34B24 34L15 PDFBibTeX XMLCite \textit{J. Behrndt} et al., J. Math. Anal. Appl. 439, No. 2, 864--895 (2016; Zbl 1341.47045) Full Text: DOI
Behrndt, Jussi; Grubb, Gerd; Langer, Matthias; Lotoreichik, Vladimir Spectral asymptotics for resolvent differences of elliptic operators with \(\delta\) and \(\delta^{'}\)-interactions on hypersurfaces. (English) Zbl 1353.47090 J. Spectr. Theory 5, No. 4, 697-729 (2015). Reviewer: Thomas Krainer (Altoona) MSC: 47F05 35J25 35P20 47G30 81Q10 81Q15 PDFBibTeX XMLCite \textit{J. Behrndt} et al., J. Spectr. Theory 5, No. 4, 697--729 (2015; Zbl 1353.47090) Full Text: DOI arXiv
Behrndt, Jussi; Rohleder, Jonathan Spectral analysis of selfadjoint elliptic differential operators, Dirichlet-to-Neumann maps, and abstract Weyl functions. (English) Zbl 1344.47018 Adv. Math. 285, 1301-1338 (2015). Reviewer: Luis Filipe Pinheiro de Castro (Aveiro) MSC: 47B25 34B20 34B24 35P05 47A10 PDFBibTeX XMLCite \textit{J. Behrndt} and \textit{J. Rohleder}, Adv. Math. 285, 1301--1338 (2015; Zbl 1344.47018) Full Text: DOI arXiv
Behrndt, Jussi; Exner, Pavel; Lotoreichik, Vladimir Schrödinger operators with \(\delta\)- and \(\delta'\)-interactions on Lipschitz surfaces and chromatic numbers of associated partitions. (English) Zbl 1326.47050 Rev. Math. Phys. 26, No. 8, Article ID 1450015, 43 p. (2014). Reviewer: Miyeon Kwon (Platteville) MSC: 47F05 35P05 47A55 47A63 47A75 81Q10 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Rev. Math. Phys. 26, No. 8, Article ID 1450015, 43 p. (2014; Zbl 1326.47050) Full Text: DOI arXiv
Behrndt, Jussi; Hassi, Seppo; Wietsma, Hendrik; de Snoo, Henk Antitonicity of the inverse for selfadjoint matrices, operators, and relations. (English) Zbl 1300.47010 Proc. Am. Math. Soc. 142, No. 8, 2783-2796 (2014). Reviewer: Mohammad Sal Moslehian (Mashhad) MSC: 47A06 15A09 47A63 47B25 15A45 15B57 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Proc. Am. Math. Soc. 142, No. 8, 2783--2796 (2014; Zbl 1300.47010) Full Text: DOI arXiv
Behrndt, Jussi; Langer, Matthias; Lotoreichik, Vladimir Spectral estimates for resolvent differences of self-adjoint elliptic operators. (English) Zbl 1311.47059 Integral Equations Oper. Theory 77, No. 1, 1-37 (2013). Reviewer: Massimo Lanza de Cristoforis (Padova) MSC: 47F05 35P05 35P20 47L20 81Q10 81Q15 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Integral Equations Oper. Theory 77, No. 1, 1--37 (2013; Zbl 1311.47059) Full Text: DOI arXiv Link
Behrndt, Jussi; Langer, Matthias; Lotoreichik, Vladimir Trace formulae and singular values of resolvent power differences of self-adjoint elliptic operators. (English) Zbl 1296.35097 J. Lond. Math. Soc., II. Ser. 88, No. 2, 319-337 (2013). Reviewer: László Simon (Budapest) MSC: 35P05 35P20 47F05 47B10 47L20 81Q10 81Q15 PDFBibTeX XMLCite \textit{J. Behrndt} et al., J. Lond. Math. Soc., II. Ser. 88, No. 2, 319--337 (2013; Zbl 1296.35097) Full Text: DOI arXiv Link
Behrndt, Jussi; Hassi, Seppo; De Snoo, Henk; Wietsma, Rudi; Winkler, Henrik Linear fractional transformations of Nevanlinna functions associated with a nonnegative operator. (English) Zbl 1311.30033 Complex Anal. Oper. Theory 7, No. 2, 331-362 (2013). MSC: 30H15 47B25 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Complex Anal. Oper. Theory 7, No. 2, 331--362 (2013; Zbl 1311.30033) Full Text: DOI
Behrndt, Jussi; Langer, Matthias; Lotoreichik, Vladimir Schrödinger operators with \(\delta\) and \(\delta^{\prime}\)-potentials supported on hypersurfaces. (English) Zbl 1275.81027 Ann. Henri Poincaré 14, No. 2, 385-423 (2013). Reviewer: Josipa Pina Milisic (Zagreb) MSC: 81Q05 81Q15 81Q10 81U20 47L20 47F05 35P20 35P05 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Ann. Henri Poincaré 14, No. 2, 385--423 (2013; Zbl 1275.81027) Full Text: DOI arXiv Link
Behrndt, Jussi; Langer, Matthias Elliptic operators, Dirichlet-to-Neumann maps and quasi boundary triples. (English) Zbl 1331.47067 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, 121-160 (2012). Reviewer: Edward L. Pekarev (Odessa) MSC: 47F05 47B25 47N20 PDFBibTeX XMLCite \textit{J. Behrndt} and \textit{M. Langer}, Lond. Math. Soc. Lect. Note Ser. 404, 121--160 (2012; Zbl 1331.47067)
Azizov, T. Ya.; Behrndt, J.; Jonas, P.; Trunk, C. Spectral points of definite type and type \(\pi \) for linear operators and relations in Krein spaces. (English) Zbl 1220.47052 J. Lond. Math. Soc., II. Ser. 83, No. 3, 768-788 (2011). Reviewer: Edward L. Pekarev (Odessa) MSC: 47B50 46C20 47A06 47A55 PDFBibTeX XMLCite \textit{T. Ya. Azizov} et al., J. Lond. Math. Soc., II. Ser. 83, No. 3, 768--788 (2011; Zbl 1220.47052) Full Text: DOI Link
Behrndt, Jussi; Langer, Matthias On the adjoint of a symmetric operator. (English) Zbl 1209.47010 J. Lond. Math. Soc., II. Ser. 82, No. 3, 563-580 (2010). Reviewer: Andreas Fleige (Dortmund) MSC: 47B25 47A06 47B50 47E05 47F05 PDFBibTeX XMLCite \textit{J. Behrndt} and \textit{M. Langer}, J. Lond. Math. Soc., II. Ser. 82, No. 3, 563--580 (2010; Zbl 1209.47010) Full Text: DOI
Behrndt, Jussi; Hassi, Seppo; de Snoo, Henk; Wietsma, Rudi Monotone convergence theorems for semi-bounded operators and forms with applications. (English) Zbl 1200.47022 Proc. R. Soc. Edinb., Sect. A, Math. 140, No. 5, 927-951 (2010). MSC: 47A58 47A06 47A07 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Proc. R. Soc. Edinb., Sect. A, Math. 140, No. 5, 927--951 (2010; Zbl 1200.47022) Full Text: DOI
Behrndt, Jussi Realization of nonstrict matrix Nevanlinna functions as Weyl functions of symmetric operators in Pontryagin spaces. (English) Zbl 1166.47035 Proc. Am. Math. Soc. 137, No. 8, 2685-2696 (2009). MSC: 47B50 30E99 47B25 47A56 47A48 PDFBibTeX XMLCite \textit{J. Behrndt}, Proc. Am. Math. Soc. 137, No. 8, 2685--2696 (2009; Zbl 1166.47035) Full Text: DOI
Behrndt, Jussi; Hassi, Seppo; De Snoo, Henk Boundary relations, unitary colligations, and functional models. (English) Zbl 1186.47007 Complex Anal. Oper. Theory 3, No. 1, 57-98 (2009). Reviewer: Dmitry Kaliuzhnyi-Verbovetskyi (Philadelphia) MSC: 47A48 46E22 47B32 47A06 47B25 47B50 47A56 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Complex Anal. Oper. Theory 3, No. 1, 57--98 (2009; Zbl 1186.47007) Full Text: DOI
Behrndt, Jussi; De Snoo, Henk On Kreĭn’s formula. (English) Zbl 1179.47023 J. Math. Anal. Appl. 351, No. 2, 567-578 (2009). Reviewer: Michal Zajac (Bratislava) MSC: 47B25 47A06 47A20 PDFBibTeX XMLCite \textit{J. Behrndt} and \textit{H. De Snoo}, J. Math. Anal. Appl. 351, No. 2, 567--578 (2009; Zbl 1179.47023) Full Text: DOI
Behrndt, Jussi; Hassi, Seppo; de Snoo, Henk Functional models for Nevanlinna families. (English) Zbl 1183.47004 Opusc. Math. 28, No. 3, 233-245 (2008). Reviewer: Bilender P. Allahverdiev (Isparta) MSC: 47A20 47A56 47B25 47B32 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Opusc. Math. 28, No. 3, 233--245 (2008; Zbl 1183.47004)
Behrndt, Jussi; Malamud, Mark M.; Neidhardt, Hagen Scattering matrices and Weyl functions. (English) Zbl 1161.47008 Proc. Lond. Math. Soc. (3) 97, No. 3, 568-598 (2008). Reviewer: Dmitry Kaliuzhnyi-Verbovetskyi (Philadelphia) MSC: 47A40 47A55 47B25 34L25 34L40 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Proc. Lond. Math. Soc. (3) 97, No. 3, 568--598 (2008; Zbl 1161.47008) Full Text: DOI arXiv
Behrndt, Jussi; Katatbeh, Qutaibeh; Trunk, Carsten Accumulation of complex eigenvalues of indefinite Sturm-Liouville operators. (English) Zbl 1140.81375 J. Phys. A, Math. Theor. 41, No. 24, Article ID 244003, 10 p. (2008). MSC: 81Q10 34L05 47B50 34B24 PDFBibTeX XMLCite \textit{J. Behrndt} et al., J. Phys. A, Math. Theor. 41, No. 24, Article ID 244003, 10 p. (2008; Zbl 1140.81375) Full Text: DOI
Behrndt, Jussi; Malamud, Mark M.; Neidhardt, Hagen Scattering theory for open quantum systems with finite rank coupling. (English) Zbl 1144.81480 Math. Phys. Anal. Geom. 10, No. 4, 313-358 (2007). MSC: 81S25 81U99 47A40 47A55 47B25 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Math. Phys. Anal. Geom. 10, No. 4, 313--358 (2007; Zbl 1144.81480) Full Text: DOI
Behrndt, Jussi; Kreusler, Hans-Christian Boundary relations and generalized resolvents of symmetric operators in Krein spaces. (English) Zbl 1160.47034 Integral Equations Oper. Theory 59, No. 3, 309-327 (2007). Reviewer: Marisela Domínguez (Caracas) MSC: 47B50 47A20 47B25 46C20 47A06 PDFBibTeX XMLCite \textit{J. Behrndt} and \textit{H.-C. Kreusler}, Integral Equations Oper. Theory 59, No. 3, 309--327 (2007; Zbl 1160.47034) Full Text: DOI Link
Behrndt, Jussi; Luger, Annemarie; Trunk, Carsten Generalized resolvents of a class of symmetric operators in Krein spaces. (English) Zbl 1138.47030 Förster, Karl-Heinz (ed.) et al., Operator theory in inner product spaces. Papers of the 4th workshop on operator theory in Krein spaces and applications, TU Berlin, Germany, December 17–19, 2004. Basel: Birkhäuser (ISBN 978-3-7643-8269-8/hbk). Operator Theory: Advances and Applications 175, 13-32 (2007). Reviewer: Yang Dachun (Beijing) MSC: 47B50 47B25 47A10 PDFBibTeX XMLCite \textit{J. Behrndt} et al., Oper. Theory: Adv. Appl. 175, 13--32 (2007; Zbl 1138.47030)
Behrndt, Jussi; Trunk, Carsten On the negative squares of indefinite Sturm–Liouville operators. (English) Zbl 1123.47033 J. Differ. Equations 238, No. 2, 491-519 (2007). Reviewer: Vjacheslav Yurko (Saratov) MSC: 47B50 34B24 34L05 47E05 47B25 PDFBibTeX XMLCite \textit{J. Behrndt} and \textit{C. Trunk}, J. Differ. Equations 238, No. 2, 491--519 (2007; Zbl 1123.47033) Full Text: DOI
Behrndt, Jussi; Langer, Matthias Boundary value problems for elliptic partial differential operators on bounded domains. (English) Zbl 1132.47038 J. Funct. Anal. 243, No. 2, 536-565 (2007). Reviewer: Alan J. Pryde (Clayton) MSC: 47F05 35J25 47B50 47B25 PDFBibTeX XMLCite \textit{J. Behrndt} and \textit{M. Langer}, J. Funct. Anal. 243, No. 2, 536--565 (2007; Zbl 1132.47038) Full Text: DOI
Behrndt, Jussi; Luger, Annemarie An analytic characterization of the eigenvalues of self-adjoint extensions. (English) Zbl 1114.47037 J. Funct. Anal. 242, No. 2, 607-640 (2007). Reviewer: Ilie Valuşescu (Bucureşti) MSC: 47B50 47A75 47B25 47E05 47N20 34B09 34B20 34L40 PDFBibTeX XMLCite \textit{J. Behrndt} and \textit{A. Luger}, J. Funct. Anal. 242, No. 2, 607--640 (2007; Zbl 1114.47037) Full Text: DOI
Behrndt, Jussi; Jonas, Peter Boundary value problems with local generalized Nevanlinna functions in the boundary condition. (English) Zbl 1121.47029 Integral Equations Oper. Theory 55, No. 4, 453-475 (2006). Reviewer: Jozef Myjak (L’Aquila) MSC: 47B50 34B05 46C20 47A06 47B40 PDFBibTeX XMLCite \textit{J. Behrndt} and \textit{P. Jonas}, Integral Equations Oper. Theory 55, No. 4, 453--475 (2006; Zbl 1121.47029) Full Text: DOI Link
Behrndt, J.; Malamud, M. M.; Neidhardt, H. Scattering Theory for Open Quantum Systems. arXiv:math-ph/0610088 Preprint, arXiv:math-ph/0610088 [math-ph] (2006). MSC: 47A40 47A55 47B25 47B44 47E05 BibTeX Cite \textit{J. Behrndt} et al., ``Scattering Theory for Open Quantum Systems'', Preprint, arXiv:math-ph/0610088 [math-ph] (2006) Full Text: arXiv
Behrndt, Jussi; Trunk, Carsten On generalized resolvents of symmetric operators of defect one with finitely many negative squares. (English) Zbl 1107.47025 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, 21-30 (2005). Reviewer: Hasi Wulan (Shantou) MSC: 47B50 47B25 PDFBibTeX XMLCite \textit{J. Behrndt} and \textit{C. Trunk}, in: Proceedings of the algorithmic information theory conference, Vaasa, Finland, May 16--18, 2005. Vaasa: Vaasan Yliopisto. 21--30 (2005; Zbl 1107.47025)
Behrndt, Jussi; Jonas, Peter On compact perturbations of locally definitizable selfadjoint relations in Krein spaces. (English) Zbl 1083.47030 Integral Equations Oper. Theory 52, No. 1, 17-44 (2005). Reviewer: Trandafir Balan (Craiova) MSC: 47B50 47A55 47B40 46C20 PDFBibTeX XMLCite \textit{J. Behrndt} and \textit{P. Jonas}, Integral Equations Oper. Theory 52, No. 1, 17--44 (2005; Zbl 1083.47030) Full Text: DOI Link