Operator Theory and Indefinite Inner Product Spaces

Presented on the occasion of the retirement of Heinz Langer in the Colloquium on Operator Theory, Vienna, March 2004

  • Matthias Langer
  • Annemarie Luger
  • Harald Woracek

Part of the Operator Theory: Advances and Applications book series (OT, volume 163)

Table of contents

  1. Front Matter
    Pages i-xxxii
  2. Research articles

    1. Vadim M. Adamyan, Igor M. Tkachenko
      Pages 1-22
    2. Yury Arlinskii, Seppo Hassi, Henk de Snoo
      Pages 23-54
    3. Aad Dijksma, Annemarie Luger, Yuri Shondin
      Pages 97-134
    4. Andreas Fleige, Seppo Hassi, Henk de Snoo, Henrik Winkler
      Pages 135-145
    5. Bernd Fritzsche, Bernd Kirstein, Andreas Lasarow
      Pages 163-189
    6. Michael Kaltenbäck, Henrik Winkler, Harald Woracek
      Pages 191-248
    7. Björn Textorius
      Pages 351-363
  3. Survey Article

About this book


In March 2004, an international conference was held in Vienna, Austria, on the occasion
of the retirement of Heinz Langer, one of the leading experts in operator theory
of indefinite inner product spaces. This volume contains some of the papers presented
at the meeting. These fifteen refereed articles report on recent and original results in
various areas of operator theory, all of them related with the work of Heinz Langer. The
topics range from abstract spectral theory in Krein spaces to more concrete applications, e.g., to boundary value problems, the study of orthogonal functions or moment problems.
The book closes with a historical survey paper.

The scientific part of the book is preceeded by some biographical material and some information about the conference itself. This includes the conference program, the list of participants and an updated list of publications of Heinz Langer.


Boundary value problem Matrix Operator theory Sturm-Liouville problem differential equation indefinite inner product spaces matrix functions minimum orthogonal polynomials

Editors and affiliations

  • Matthias Langer
    • 1
  • Annemarie Luger
    • 2
  • Harald Woracek
    • 2
  1. 1.Department of MathematicsUniversity of StrathclydeGlasgowUK
  2. 2.Institut für Analysis und Scientific ComputingTechnische Universität WienWienAustria

Bibliographic information