Research interests:

• (heuristic) construction of discrete structures, especially linear codes
• use of heuristics in general, e.g. for solving IPs
• chess programming (my program is called "Jonny")

Publications:

2010:

• A Z4-linear code of high minimum Lee distance derived from a hyperoval (joint work with Michael Kiermaier)
  accepted to appear in Advances in Mathematics of Communications, 2010.
• A new series of Z4-linear codes of high minimum Lee distance derived from the Kerdock codes (joint work with Michael Kiermaier)
  Appeared in Proceedings of the 19th International Symposium on Mathematical Theory of Networks and Systems (MTNS 2010), 5-9 July, 2010, Budapest, Hungary, pp. 929-932, 2010. ISBN 978-963-311-370-7

2009:

• New linear codes with prescribed group of automorphisms found by heuristic search
  Appeared in Advances in Mathematics of Communications, Volume 3, Number 2, pp. 157-166, May 2009

2008:

• A heuristic algorithm for the construction of (sometimes) optimal linear codes (English summing-up of my diploma thesis)
  Appeared in IEEE Transactions on Information Theory, Volume 54, Number 5, pp. 2388-2392, May 2008

2007:

• Computergestützte Konstruktion von linearen Codes mit hoher Minimaldistanz unter Verwendung heuristischer Methoden (diploma thesis, in German) download
• Heuristic methods for the construction of optimal codes (joint paper with Axel Kohnert)

Talks:

2010:

• A non-free Z4-linear code of high minimum Lee distance (talk at the ALCOMA10, Thurnau, 04-12-10) download

2009:

• Heuristic Construction of Linear Codes over Finite Chain Rings with high minimum Homogenous Weight (talk at the "Kolloquium über Kombinatorik", Magdeburg, 11-13-09) download

2008:

• Heuristic Construction of Linear Codes with prescribed Automorphism Group (talk at Soria Summer School, Soria, July 2008) download

2007:

• Heuristic Construction Of Good Error-Correcting Linear Codes (talk at the "Kolloquium über Kombinatorik", Magdeburg, 11-17-07) download

others:

• A table for good linear codes over chain rings constructed by HeuricoII enter
• Das Geheimnis der Schachprogramme (article about chess programming, SPEKTRUM 03/04 of the UBT, in German) download
• The most recent (windows) version of my chess program "Jonny", which played in the world championship 2010 in Kanazawa (Japan) download