## Research Interests

Discrete Optimization,
Semidefinite Programming,
Convex Optimization,
Industrial Applications
## Informal CV

I was born in
Innsbruck,
Austria, in 1968.
Here are some nice views
of Innsbruck with one of its major attractions, the Golden Roof, further
important
sites, and some family connections.
I studied Mathematics with Computer Science
in
Graz. In 1991 I graduated as Diplom-Ingenieur in Mathematics from
Graz University of Technology.

From July 1992 till June 1995 I was employed at the
*
Christian Doppler Laboratory for Discrete Optimization*
associated with the
Institut für Mathematik B at the Graz University of Technology.
I received my Ph.D. in 1995 at
Graz University of Technology. My Ph.D.-thesis introduced
An Interior Point Method for Semidefinite Programming
and Max-Cut Bounds.

In my "Berlin years", from
July 1995 to March 2002, I worked at the
Konrad-Zuse-Zentrum für Informationstechnik Berlin. Like in Graz, I spent
most of my time on research and on industrial projects.
During 1997/98 I participated in the organization
of the International Congress
of Mathematicians Berlin 1998 - a lot of work - and great fun!
In July 2000 I finished my Habilitation at Technische Universität Berlin, Fachbereich Mathematik. Feel free to download my *Habilitationsschrift* Semidefinite Programming for Combinatorial Optimization. My spectral bundle code SBmethod for large scale semidefinite programming is still available but now superseded by the C++ callable library ConicBundle, which offers special support for Lagrangian relaxation of
integer and linear programs over symmetric cones with separate (also nonpolyhedral) cutting models, for primal aggregation and for adding primal
cuttings planes dynamically.

During a short period, from April 2002 till September 2002, I was a Professor of Economathematics at the Department
of Mathematics, University of Kaiserslautern.

Since October 2002 I am Professor of Algorithmic and Discrete Mathematics at the
Department of Mathematics,
Chemnitz University of Technology.

I a member of the Deutsche Mathematiker Vereinigung (DMV) (contact me if you want to join as well!), of the Gesellschaft für Operations Research (GOR), the
Mathematical Optimization Society, and of
Deutscher Hochschulverband. In our department's support of the African Institute for Mathematical Sciences I also try to be of some help.