Recent Advances in Operator Theory in Hilbert and Krein Spaces

1. Local Scattering Problem and a Solvable Model of Quantum Network
Vadym Adamyan, Boris Pavlov

2. Quadratic (Weakly) Hyperbolic Matrix Polynomials: Direct and Inverse Spectral Problems
T. Ya. Azizov, A. Dijksma, K.-H. Förster, P. Jonas

3. A Theorem on Existence of Invariant Subspaces for J-binoncontractive Operators
Tomas Ya. Azizov, Victor A. Khatskevich

4. Moment Problems for Real Measures on the Unit Circle
Mihály Bakonyi, Ekaterina V. Lopushanskaya

5. Finite Rank Perturbations, Scattering Matrices and Inverse Problems
Jussi Behrndt, Mark M. Malamud, Hagen Neidhardt

6. Conditions for an Indefinite Sturm-Liouville Riesz Basis Property
Paul Binding, Andreas Fleige

7. Convergence of Diagonal Padé Approximants for a Class of Definitizable Functions
Maxim Derevyagin, Vladimir Derkach

8. Approximation of N


κ

∞
-functions II: Convergence of Models
Aad Dijksma, Annemarie Luger, Yuri Shondin

9. Nonnegative Extensions via Embeddings
K.-H. Förster, M. M. Nafalska

10. Fredholm Properties of Unbounded Operators on Interpolation Spaces
Kerstin Günther

11. Domain and Range Descriptions for Adjoint Relations, and Parallel Sums and Differences of Forms
Seppo Hassi, Zoltán Sebestyén, Henk Snoo

12. The Königs Problem and Extreme Fixed Points
V. A. Khatskevich, V. A. Senderov

13. Bisectors, Isometries and Connected Components in Hilbert Spaces
Jean-Philippe Labrousse

14. On Norms in Indefinite Inner Product Spaces
Matthias Langer, Annemarie Luger

15. Interpolation of Sobolev Spaces and Indefinite Elliptic Spectral Problems
S. G. Pyatkov

16. On the Spectrum of a Quantum Dot with Impurity in the Lobachevsky Plane
P. Šťovíček, M. Tušek

17. Note on Interlacing for Hyperbolic Quadratic Pencils
Krešimir Veselić

Nyckelord: Mathematics, Operator Theory