This catalogue pays tribute to the artist Sven Drühl as a collector and theorist. For more than t...

The present volume contains a collection of original research articles and expository contributio...

Linear Operators in Almost Krein Spaces.- Generalized Resolvents of a Class of Symmetric Operator...

Partial Non-stationary Perturbation Determinants for a Class of J-symmetric Operators.- Reproduci...

Local Scattering Problem and a Solvable Model of Quantum Network.- Quadratic (Weakly) Hyperbolic ...

Augmented Schur Parameters for Generalized Nevanlinna Functions and Approximation.- On Domains of...

The present volume contains a collection of original research articles and expository contributio...