4th Workshop Operator Theory
TU Berlin, December 17-19, 2004
List of abstracts
- Vadim M. Adamyan
Entire Matrix Functions Orthogonal with Respect to
some Non-positive Matrix Measures on the Real Axis
- Daniel A. Alpay
Schur--Takagi Problem and Generalized Schur Functions: The Time--Varying
Case
- Yury M. Arlinskii
Passive Quasi-Selfadjoint Discrete-Time Systems
- Tomas Ya. Azizov
On a Number of Fix Points of Holomorphisms
- Andras Batkai
Differential Operators with Wentzell Boundary Conditions: An Operator
Matrix Approach
- Jussi Behrndt
Finite Rank Perturbations of Locally
Definitizable Selfadjoint Operators
- Branko Curgus
Riesz Basis of Root Vectors of
Indefinite Sturm-Liouville Problems
- Vladimir Derkach
Asymptotic Expansions of Generalized Nevanlinna Functions
- Aad Dijksma
Rank One Perturbations at Infinite
Coupling in Pontryagin Spaces
- Andreas Fleige
The Green-Red Colouring of Curgus for Indefinite Sturm-Liouville Operators with Certain Interface Conditions
- Aurelian Gheondea
Lifting of Operators to Hilbert spaces induced by Positive
Selfadjoint Operators
- Seppo Hassi
A Class of Nevanlinna Functions Related to
Singular Sturm-Liouville Problems
- Rostyslav Hryniv
Inverse Problems for Compound Oscillating Systems
- Birgit Jacob
On Null-Controllability of Diagonal Systems
- Peter Jonas
On Operator Representations of Locally Definitizable
Operator Functions
- Michael Kaltenbäck
Symmetric Relations of Finite Negativity
- Ilia Karabash
Similarity of J-selfadjoint Differential Operators to Selfadjoint ones
- Victor Khatskevich
Operator Pencils of the Second Order and Linear Fractional
Relations
- Heinz Langer
Self-adjoint Analytic Operator Functions
- Matthias Langer
Resonances and Spectral Concentration of a Sturm--Liouville Problem
Depending Rationally on the Eigenvalue Parameter
- Annemarie Luger
On the Eigenvalues of an Abstract
λ-Dependent Boundary Value Problem
- Mark Malamud
Borg Type Results for Matrix Sturm-Liouville
Operator
- Volker Mehrmann
Quadratic Operator Eigenvalue Problems
with Hamiltonian or Symplectic Eigensymmetry
- Hagen Neidhardt
Zeno Product Formula
- Vyachslav Pivovarchik
Spectral Properties of a Fourth Order Differential Equation
- André C.M. Ran
Integral Operators with Semi-separable Kernels with Symmetries
- Leiba Rodman
Extension of Jet Functions with Indefinite
Carathéodory - Pick Matrices
- Adrian Sandovici
Degenerated Inner Product Spaces
- Andrei Shkalikov
Invariant Subspaces of Dissipative Operators in
Krein Spaces
- Yuri Shondin
Approximation of High Order Singular Perturbations
- Henk de Snoo
A Canonical Decomposition for Linear Operators and Linear
Relations
- Vladimir Strauss
On the Uniquence of Spectral Functions
for WJ*algebras of
Dκ^+ -Class
- Lyudmila I. Sukhocheva
On Selfadjoint Operators in Degenerate Krein Spaces
- Franciszek H. Szafraniec
Favard's Theorem Modulo an Ideal
- Christiane Tretter
A Krein Space Approach to the Klein-Gordon Equation
- Carsten Trunk
Uniformly Dissipative Perturbations of
Selfadjoint Operators in Krein Spaces
- Kresimir Veselic
Some New Results on Damped Systems
- Gerald Wanjala
Generalized Schur Functions and Augmented Schur Parameters
- Henrik Winkler
Extremal Extensions of Nonnegative Operators
- Monika Winklmeier
A Variational Principle for Unbounded Block Operator Matrices
and Application
- Harald Woracek
De Branges Spaces of Entire Functions Symmetric About the Origin