Spectral Theory in Inner Product Spaces and Applications [electronic resource] : 6th Workshop on Operator Theory in Krein Spaces and Operator Polynomials, Berlin, December 2006 / edited by Jussi Behrndt, Karl-Heinz Förster, Heinz Langer, Carsten Trunk.

Augmented Schur Parameters for Generalized Nevanlinna Functions and Approximation -- On Domains of Powers of Linear Operators and Finite Rank Perturbations -- Finite-dimensional de Branges Subspaces Generated by Majorants -- Trace Formulae for Dissipative and Coupled Scattering Systems -- Approximation of N ? ? -functions I: Models and Regularization -- On the Block Numerical Range of Nonnegative Matrices -- A Quantum Dot with Impurity in the Lobachevsky Plane -- One-dimensional Perturbations, Asymptotic Expansions, and Spectral Gaps -- Abstract Kinetic Equations with Positive Collision Operators -- On the Structure of Semigroups of Operators Acting in Spaces with Indefinite Metric -- G-Self-adjoint Operators in Almost Pontryagin Spaces -- On a Kre?n Criterion -- Two-sided Weighted Shifts Are ‘Almost Krein’ Normal.