| Publication | Date of Publication | Type |
|---|
| Nonrelativistic Limit of Generalized MIT Bag Models and Spectral Inequalities | 2023-12-22 | Paper |
| Boundary value problems for adjoint pairs of operators | 2023-12-14 | Paper |
| On two-dimensional Dirac operators with $\delta$-shell interactions supported on unbounded curves with straight ends | 2023-11-30 | Paper |
| Lower bounds for self-adjoint Sturm–Liouville operators | 2023-10-11 | Paper |
| Construction of self‐adjoint differential operators with prescribed spectral properties | 2023-10-09 | Paper |
| Integral representation of superoscillations via complex Borel measures and their convergence | 2023-08-28 | Paper |
| Approximation of Dirac operators with $\boldsymbol{\delta}$-shell potentials in the norm resolvent sense | 2023-08-25 | Paper |
| Perturbation and spectral theory for singular indefinite Sturm-Liouville operators | 2023-08-01 | Paper |
| Schrödinger operators with oblique transmission conditions in \(\mathbb{R}^2\) | 2023-07-28 | Paper |
| The fate of Landau levels under \(\delta\)-interactions | 2023-05-23 | Paper |
| Perturbations of periodic Sturm-Liouville operators | 2023-04-27 | Paper |
| Two-dimensional Dirac operators with general δ-shell interactions supported on a straight line | 2023-02-27 | Paper |
| Boundary triples and Weyl functions for Dirac operators with singular interactions | 2022-11-09 | Paper |
| Relative oscillation theory and essential spectra of Sturm-Liouville operators | 2022-10-13 | Paper |
| Spectral transition for Dirac operators with electrostatic \(\delta\)-shell potentials supported on the straight line | 2022-09-21 | Paper |
| Sharp Boundary Trace Theory and Schr\"{o}dinger Operators on Bounded Lipschitz Domains | 2022-09-19 | Paper |
| Two-dimensional Dirac operators with general $\delta$-shell interactions supported on a straight line | 2022-08-26 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5074157 | 2022-05-09 | Paper |
| A unified approach to Schrödinger evolution of superoscillations and supershifts | 2022-04-22 | Paper |
| Relative oscillation theory and essential spectra of Sturm--Liouville operators | 2022-03-16 | Paper |
| Jordan chains of elliptic partial differential operators and Dirichlet-to-Neumann maps | 2022-02-28 | Paper |
| The generalized Birman–Schwinger principle | 2022-01-24 | Paper |
| Singular Schrödinger operators with prescribed spectral properties | 2021-11-11 | Paper |
| Perturbations of periodic Sturm--Liouville operators | 2021-05-27 | Paper |
| Schr\"odinger operators with $\delta$-potentials supported on unbounded Lipschitz hypersurfaces | 2021-05-12 | Paper |
| Green's function for the Schrödinger equation with a generalized point interaction and stability of superoscillations | 2021-01-29 | Paper |
| On compressed resolvents of Schrödinger operators with complex potentials | 2021-01-22 | Paper |
| The Landau Hamiltonian with δ-potentials supported on curves | 2020-10-25 | Paper |
| Self-adjoint Dirac operators on domains in \(\mathbb{R}^3\) | 2020-08-28 | Paper |
| Scattering matrices and Weyl functions of quasi boundary triples | 2020-08-26 | Paper |
| Two-dimensional Dirac operators with singular interactions supported on closed curves | 2020-08-17 | Paper |
| Limiting absorption principle and scattering matrix for Dirac operators with δ-shell interactions | 2020-05-22 | Paper |
| On Dirac operators with electrostatic \(\delta \)-shell interactions of critical strength | 2020-05-13 | Paper |
| The Generalized Birman-Schwinger Principle | 2020-05-03 | Paper |
| Hagen Neidhardt (1950--2019) -- his work and legacy | 2020-03-16 | Paper |
| Inverse problems with partial data for elliptic operators on unbounded Lipschitz domains | 2020-03-16 | Paper |
| Boundary Value Problems, Weyl Functions, and Differential Operators | 2020-02-20 | Paper |
| Quasi boundary triples, self-adjoint extensions, and Robin Laplacians on the half-space | 2019-11-27 | Paper |
| Schr\"odinger evolution of superoscillations with $\delta$- and $\delta'$-potentials | 2019-11-12 | Paper |
| Evolution of Aharonov-Berry superoscillations in Dirac \(\delta\)-potential | 2019-10-18 | Paper |
| On Dirac operators in \(\mathbb{R}^3\) with electrostatic and Lorentz scalar \(\delta\)-shell interactions | 2019-10-18 | Paper |
| Spectral bounds for indefinite singular Sturm-Liouville operators with uniformly locally integrable potentials | 2019-04-23 | Paper |
| Finite rank perturbations in Pontryagin spaces and a Sturm-Liouville problem with \(\lambda\)-rational boundary conditions | 2018-11-26 | Paper |
| An indefinite Laplacian on a rectangle | 2018-10-02 | Paper |
| Spectral enclosures for non-self-adjoint extensions of symmetric operators | 2018-08-03 | Paper |
| Spectral bounds for singular indefinite Sturm-Liouville operators with 𝐿¹-potentials | 2018-07-17 | Paper |
| Eigenvalue inequalities for Schrödinger operators on unbounded Lipschitz domains | 2018-07-02 | Paper |
| Coupling of symmetric operators and the third Green identity | 2018-04-16 | Paper |
| On the spectral properties of Dirac operators with electrostatic \(\delta\)-shell interactions | 2018-02-14 | Paper |
| Quasi boundary triples and semi-bounded self-adjoint extensions | 2017-10-17 | Paper |
| A spectral shift function for Schr\"{o}dinger operators with singular interactions | 2017-10-09 | Paper |
| On the index of meromorphic operator-valued functions and some applications | 2017-09-07 | Paper |
| Trace formulae for Schr\"odinger operators with singular interactions | 2017-09-07 | Paper |
| Approximation of Schrödinger operators with δ-interactions supported on hypersurfaces | 2017-07-14 | Paper |
| Scattering matrices and Dirichlet-to-Neumann maps | 2017-07-13 | Paper |
| The Krein–von Neumann Realization of Perturbed Laplacians on Bounded Lipschitz Domains | 2017-07-06 | Paper |
| Spectral theory for Schrödinger operators with \(\delta\)-interactions supported on curves in \(\mathbb {R}^3\) | 2017-05-19 | Paper |
| The Dirichlet-to-Neumann map for Schrödinger operators with complex potentials | 2017-05-03 | Paper |
| Eigenvalue estimates for operators with finitely many negative squares | 2017-02-09 | Paper |
| Boundary triples for Schrödinger operators with singular interactions on hypersurfaces | 2016-11-25 | Paper |
| Dirichlet-to-Neumann maps, abstract Weyl-Titchmarsh \(M\)-functions, and a generalized index of unbounded meromorphic operator-valued functions | 2016-07-25 | Paper |
| Titchmarsh-Weyl theory for Schrödinger operators on unbounded domains | 2016-06-09 | Paper |
| Sharp eigenvalue estimates for rank one perturbations of nonnegative operators in Krein spaces | 2016-04-15 | Paper |
| Spectral asymptotics for resolvent differences of elliptic operators with \(\delta\) and \(\delta^{'}\)-interactions on hypersurfaces | 2016-01-22 | Paper |
| Spectral analysis of selfadjoint elliptic differential operators, Dirichlet-to-Neumann maps, and abstract Weyl functions | 2015-10-28 | Paper |
| Dirichlet-to-Neumann maps on bounded Lipschitz domains | 2015-09-22 | Paper |
| Estimates on the non-real eigenvalues of regular indefinite Sturm–Liouville problems | 2015-06-25 | Paper |
| The effect of finite rank perturbations on Jordan chains of linear operators | 2015-06-10 | Paper |
| On finite rank perturbations of selfadjoint operators in Krein spaces and eigenvalues in spectral gaps | 2014-12-18 | Paper |
| Schrödinger operators with \(\delta\)- and \(\delta'\)-interactions on Lipschitz surfaces and chromatic numbers of associated partitions | 2014-11-18 | Paper |
| Elliptic differential operators on Lipschitz domains and abstract boundary value problems | 2014-10-13 | Paper |
| Schrödinger operators withδ-interactions supported on conical surfaces | 2014-09-30 | Paper |
| Antitonicity of the inverse for selfadjoint matrices, operators, and relations | 2014-09-12 | Paper |
| Variation of discrete spectra of non-negative operators in Krein spaces | 2014-07-14 | Paper |
| An open problem: accumulation of nonreal eigenvalues of indefinite Sturm-Liouville operators | 2014-03-21 | Paper |
| Spectral estimates for resolvent differences of self-adjoint elliptic operators | 2014-01-29 | Paper |
| Spectral theory of elliptic differential operators with indefinite weights | 2013-12-13 | Paper |
| Trace formulae and singular values of resolvent power differences of self-adjoint elliptic operators | 2013-10-18 | Paper |
| Linear fractional transformations of Nevanlinna functions associated with a nonnegative operator | 2013-10-10 | Paper |
| Bounds on the non-real spectrum of differential operators with indefinite weights | 2013-09-23 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2849108 | 2013-09-16 | Paper |
| Schrödinger operators with \(\delta\) and \(\delta^{\prime}\)-potentials supported on hypersurfaces | 2013-03-28 | Paper |
| On the negative squares of a class of self‐adjoint extensions in Krein spaces | 2013-03-15 | Paper |
| An Inverse Problem of Calderón Type with Partial Data | 2012-08-14 | Paper |
| A realization theorem for generalized Nevanlinna families | 2012-06-11 | Paper |
| Limit properties of monotone matrix functions | 2012-03-07 | Paper |
| Square-integrable solutions and Weyl functions for singular canonical systems | 2011-08-17 | Paper |
| Eigenvalue estimates for singular left-definite Sturm-Liouville operators | 2011-08-16 | Paper |
| Spectral points of definite type and type π for linear operators and relations in Krein spaces | 2011-06-06 | Paper |
| On the adjoint of a symmetric operator | 2011-01-10 | Paper |
| On the number of negative eigenvalues of the Laplacian on a metric graph | 2011-01-07 | Paper |
| Monotone convergence theorems for semi-bounded operators and forms with applications | 2010-11-11 | Paper |
| Elliptic boundary value problems with \(\lambda \)-dependent boundary conditions | 2010-11-08 | Paper |
| Dirac structures and their composition on Hilbert spaces | 2010-09-17 | Paper |
| A remark on Schatten-von Neumann properties of resolvent differences of generalized Robin Laplacians on bounded domains | 2010-09-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3560673 | 2010-05-14 | Paper |
| Finite Rank Perturbations, Scattering Matrices and Inverse Problems | 2010-05-14 | Paper |
| Spectral analysis of singular ordinary differential operators with indefinite weights | 2010-04-08 | Paper |
| Non-real eigenvalues of singular indefinite Sturm-Liouville operators | 2009-11-06 | Paper |
| Generalized \(Q\)-functions and Dirichlet-to-Neumann maps for elliptic differential operators | 2009-09-17 | Paper |
| Realization of nonstrict matrix Nevanlinna functions as Weyl functions of symmetric operators in Pontryagin spaces | 2009-07-23 | Paper |
| Compact and finite rank perturbations of closed linear operators and relations in Hilbert spaces | 2009-07-01 | Paper |
| Boundary relations, unitary colligations, and functional models | 2009-06-17 | Paper |
| Boundary value problems with eigenvalue depending boundary conditions | 2009-05-13 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3621538 | 2009-04-21 | Paper |
| On Domains of Powers of Linear Operators and Finite Rank Perturbations | 2009-03-12 | Paper |
| Trace Formulae for Dissipative and Coupled Scattering Systems | 2009-03-12 | Paper |
| On Kreĭn's formula | 2009-01-15 | Paper |
| Scattering matrices and Weyl functions | 2008-11-13 | Paper |
| Accumulation of complex eigenvalues of indefinite Sturm–Liouville operators | 2008-07-02 | Paper |
| On Eisenbud's and Wigner's \(R\)-matrix: A general approach | 2008-05-19 | Paper |
| Scattering theory for open quantum systems with finite rank coupling | 2008-05-14 | Paper |
| Boundary relations and generalized resolvents of symmetric operators in Krein spaces | 2008-03-12 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5444341 | 2008-02-25 | Paper |
| On finite rank perturbations of definitizable operators | 2008-01-10 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3592913 | 2007-09-24 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3592914 | 2007-09-24 | Paper |
| On the spectral theory of singular indefinite Sturm-Liouville operators | 2007-07-19 | Paper |
| On the negative squares of indefinite Sturm--Liouville operators | 2007-07-19 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3440668 | 2007-05-29 | Paper |
| Boundary value problems for elliptic partial differential operators on bounded domains | 2007-05-10 | Paper |
| An analytic characterization of the eigenvalues of self-adjoint extensions | 2007-01-16 | Paper |
| Scattering Theory for Open Quantum Systems | 2006-10-31 | Paper |
| Boundary value problems with local generalized Nevanlinna functions in the boundary condition | 2006-09-04 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5482916 | 2006-08-15 | Paper |
| A class of nonlinear elliptic boundary value problems | 2006-06-29 | Paper |
| Sturm--Liouville operators with indefinite weight functions and eigenvalue depending boundary conditions | 2006-03-20 | Paper |
| On compact perturbations of locally definitizable selfadjoint relations in Krein spaces | 2005-06-15 | Paper |
