## Found 113 Documents (Results 1–100)

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### A unified approach to Schrödinger evolution of superoscillations and supershifts. (English)Zbl 1490.81070

MSC:  81Q05 35A08 32A10
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### A class of singular perturbations of the Dirac operator: boundary triplets and Weyl functions. (English)Zbl 07523170

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).
MSC:  47-XX 42-XX 30-XX

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### Scattering matrices and Weyl functions of quasi boundary triples. (English)Zbl 1481.47009

Kurasov, Pavel (ed.) et al., Analysis as a tool in mathematical physics. In memory of Boris Pavlov. Collected papers presented at the conferences “Spectral Theory and Applications”, Stockholm, Sweden, March 13–15, 2016 and “Operator Theory, Analysis and Mathematical Physics – OTAMP2016”, Euler International Mathematical Institute, St. Petersburg, Russia, August 2–7, 2016. Cham: Birkhäuser. Oper. Theory: Adv. Appl. 276, 162-182 (2020).
MSC:  47A40 81U20 35J10
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MSC:  01A70
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### Inverse problems with partial data for elliptic operators on unbounded Lipschitz domains. (English)Zbl 1445.35147

MSC:  35J25 47F05
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### Boundary value problems, Weyl functions, and differential operators. (English)Zbl 1457.47001

Monographs in Mathematics 108. Cham: Birkhäuser (ISBN 978-3-030-36713-8/hbk; 978-3-030-36716-9/pbk; 978-3-030-36714-5/ebook). vii, 772 p., open access (2020).
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### 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
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### Spectral bounds for indefinite singular Sturm-Liouville operators with uniformly locally integrable potentials. (English)Zbl 1416.34019

MSC:  34B24 34L15 47E05
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### Finite rank perturbations in Pontryagin spaces and a Sturm-Liouville problem with $$\lambda$$-rational boundary conditions. (English)Zbl 1471.47024

Alpay, Daniel (ed.) et al., Indefinite inner product spaces, Schur analysis, and differential equations. A volume dedicated to Heinz Langer. Cham: Birkhäuser. Oper. Theory: Adv. Appl. 263, 163-189 (2018).
MSC:  47B50 34L05 47A55
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MSC:  35M12
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### Spectral bounds for singular indefinite Sturm-Liouville operators with $$L^1$$-potentials. (English)Zbl 1396.34052

MSC:  34L15 47E05 34B24
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### Eigenvalue inequalities for Schrödinger operators on unbounded Lipschitz domains. (English)Zbl 1423.35087

MSC:  35J10 35P15
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### 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
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### On the index of meromorphic operator-valued functions and some applications. (English)Zbl 1441.47012

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). EMS Ser. Congr. Rep., 95-127 (2017).
MSC:  47A56 47A53 47A68
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### Approximation of Schrödinger operators with {$$\delta$$}-interactions supported on hypersurfaces. (English)Zbl 1376.35010

MSC:  35J10 81Q10
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### The Dirichlet-to-Neumann map for Schrödinger operators with complex potentials. (English)Zbl 1372.35095

MSC:  35J57 47F05
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### The Krein-von Neumann realization of perturbed Laplacians on bounded Lipschitz domains. (English)Zbl 1372.35200

Eisner, Tanja (ed.) et al., Operator theory, function spaces, and applications. International workshop on operator theory and applications, Amsterdam, The Netherlands, July 14–18, 2014. Basel: Birkhäuser/Springer (ISBN 978-3-319-31381-8/hbk; 978-3-319-31383-2/ebook). Operator Theory: Advances and Applications 255, 49-66 (2016).
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### Eigenvalue estimates for operators with finitely many negative squares. (English)Zbl 1370.47045

MSC:  47B50 47A55 47E05
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### Boundary triples for Schrödinger operators with singular interactions on hypersurfaces. (English)Zbl 1353.47043

MSC:  47B25 35J10
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### Dirichlet-to-Neumann maps on bounded Lipschitz domains. (English)Zbl 1344.35032

MSC:  35J57 47F05 35B65
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### The effect of finite rank perturbations on Jordan chains of linear operators. (English)Zbl 1412.47007

MSC:  47A55 47A10 15A18
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MSC:  00B30
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### Elliptic differential operators on Lipschitz domains and abstract boundary value problems. (English)Zbl 1300.35026

MSC:  35J40 35J25
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### Variation of discrete spectra of non-negative operators in Krein spaces. (English)Zbl 1349.47062

Reviewer: Eungil Ko (Seoul)
MSC:  47B50 47A11 47A55
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### Spectral theory of elliptic differential operators with indefinite weights. (English)Zbl 1400.35085

MSC:  35J15 35P05 47F05
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### Linear fractional transformations of Nevanlinna functions associated with a nonnegative operator. (English)Zbl 1311.30033

MSC:  30H15 47B25
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### 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).
MSC:  47F05 47B25 47N20

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MSC:  26A48
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### 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. (English)Zbl 1245.47001

Operator Theory: Advances and Applications 221. Basel: Birkhäuser (ISBN 978-3-0348-0296-3/hbk; 978-3-0348-0297-0/ebook). x, 690 p. (2012).
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### A realization theorem for generalized Nevanlinna families. (English)Zbl 1255.46011

MSC:  46C20 47B50 47B32
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### Eigenvalue estimates for singular left-definite Sturm-Liouville operators. (English)Zbl 1235.34225

MSC:  34L15 34B24 47E05
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### On the number of negative eigenvalues of the Laplacian on a metric graph. (English)Zbl 1204.81076

MSC:  81Q35 81Q10
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### Monotone convergence theorems for semi-bounded operators and forms with applications. (English)Zbl 1200.47022

MSC:  47A58 47A06 47A07
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### Dirac structures and their composition on Hilbert spaces. (English)Zbl 1209.47016

MSC:  47B50 47A48
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### Finite rank perturbations, scattering matrices and inverse problems. (English)Zbl 1192.47008

Behrndt, Jussi (ed.) et al., Recent advances in operator theory in Hilbert and Krein spaces. Papers of the 7th workshop on operator theory in Krein spaces and spectral analysis, TU Berlin, Germany, December 13–16, 2007. Dedicated to Peter Jonas. Basel: Birkhäuser (ISBN 978-3-0346-0179-5/hbk; 978-3-0346-0180-1/ebook). Operator Theory: Advances and Applications 198, 61-85 (2010).
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### In memoriam Peter Jonas (1941–2007). List of publications of Peter Jonas. (English)Zbl 1191.47002

Behrndt, Jussi (ed.) et al., Recent advances in operator theory in Hilbert and Krein spaces. Papers of the 7th workshop on operator theory in Krein spaces and spectral analysis, TU Berlin, Germany, December 13–16, 2007. Dedicated to Peter Jonas. Basel: Birkhäuser (ISBN 978-3-0346-0179-5/hbk; 978-3-0346-0180-1/ebook). Operator Theory: Advances and Applications 198, viii-xv (2010).
MSC:  47-03 01A70

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### Recent advances in operator theory in Hilbert and Krein spaces. Papers of the 7th workshop on operator theory in Krein spaces and spectral analysis, TU Berlin, Germany, December 13–16, 2007. Dedicated to Peter Jonas. (English)Zbl 1181.47004

Operator Theory: Advances and Applications 198. Basel: Birkhäuser (ISBN 978-3-0346-0179-5/hbk; 978-3-0346-0180-1/ebook). xv, 307 p. (2010).
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### Non-real eigenvalues of singular indefinite Sturm-Liouville operators. (English)Zbl 1182.47036

MSC:  47B50 47A10 34B24
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### Generalized $$Q$$-functions and Dirichlet-to-Neumann maps for elliptic differential operators. (English)Zbl 1179.47041

MSC:  47F05 35J99
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### Compact and finite rank perturbations of closed linear operators and relations in Hilbert spaces. (English)Zbl 1194.47016

MSC:  47A55 47A06
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### Trace formulae for dissipative and coupled scattering systems. (English)Zbl 1175.47008

Behrndt, Jussi (ed.) et al., Spectral theory in inner product spaces and applications. Papers of the 6th workshop on operator theory in Krein spaces and operator polynomials, TU Berlin, Germany, December 14–17, 2006. Basel: Birkhäuser (ISBN 978-3-7643-8910-9/hbk). Operator Theory: Advances and Applications 188, 49-85 (2009).
MSC:  47A40 47A55 47B44
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### On domains of powers of linear operators and finite rank perturbations. (English)Zbl 1177.47004

Behrndt, Jussi (ed.) et al., Spectral theory in inner product spaces and applications. Papers of the 6th workshop on operator theory in Krein spaces and operator polynomials, TU Berlin, Germany, December 14–17, 2006. Basel: Birkhäuser (ISBN 978-3-7643-8910-9/hbk). Operator Theory: Advances and Applications 188, 31-36 (2009).
MSC:  47A05 47B50 47A55
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### On Kreĭn’s formula. (English)Zbl 1179.47023

MSC:  47B25 47A06 47A20
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### Spectral theory in inner product spaces and applications. Papers of the 6th workshop on operator theory in Krein spaces and operator polynomials, TU Berlin, Germany, December 14–17, 2006. (English)Zbl 1151.47002

Operator Theory: Advances and Applications 188. Basel: Birkhäuser (ISBN 978-3-7643-8910-9/hbk). xx, 250 p. (2009).
MSC:  47-06 46-06 00B25

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### On finite rank perturbations of definitizable operators. (English)Zbl 1127.47034

MSC:  47B50 47A55 47E05
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