This volume contains contributions written by participants of the 4th Workshop on Operator Theory in Krein Spaces and Applications, held at the TU Berlin, Germa

Presents a modern, readable introduction to spaces with indefinite inner product and their operator theory.

This book covers recent results in linear algebra with indefinite inner product. It includes applications to differential and difference equations with symmetri

An introduction to the geometry of spaces, this research monograph develops the foundations of the theory of linear operators in these spaces and examines the t

A one-sentence definition of operator theory could be: The study of (linear) continuous operations between topological vector spaces, these being in general (bu