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.

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

This volume is dedicated to Rien Kaashoek on the occasion of his 80th birthday and celebrates his many contributions to the field of operator theory during more

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