Office:	Templergraben 64, room 222
Telefon:	(0241) 80 - 94545
Fax:	(0241) 80 - 92108
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Mailing adress: Lehrstuhl D für Mathematik RWTH Aachen Templergraben 64 52062 Aachen
I am Professor at the Lehrstuhl D für Mathematik of the RWTH Aachen. My current research interests are integral representations of finite groups, lattices, spherical designs and modular forms, and their analogues in coding theory. You will find a brief CV (in german) if you click here. Preprints Talks Diploma-Theses PhD-Theses. Lectures The research training group Experimental and constructive algebra started in october 2010. Together with Neil J. A. Sloane we are building a database of interesting lattices On august 11 2010 I found an extremal even unimodular lattice of dimension 72. A new version of the paper can be downloaded here. Magma code to construct this lattice is found here Construction of the extremal lattice. Computation of super offenders in all 9 lattices Computation of the norm 6 vectors in all 9 lattices using an orthogonally decomposable overlattice. In the paper On Siegel modular forms of weight 12 ( pdf-file) with B. Venkov, we calculate the action of some Hecke operators on the space generated by the 24 Niemeier lattices. You get the Hecke operators and the eigenforms in maple format if you click here. The structure constants for the multiplication of the eigenforms are in the big maple-file multiplication. The absolutely irreducible maximal finite subgroups of GL(n,D) for definite quaternion algebras D of dimension less than 40/n over the rationals are classified in my paper Finite quaternionic matrix groups. ( pdf-file of a preprint) You find invariant Hermitian lattices for the about 300 primitive groups in 93 magma-readable files if you click here. links Fachgruppe Mathematik der RWTH Lehrstuhl B für Mathematik der RWTH Aachen Catalogue of lattices MAGMA ATLAS The prime page The number theory web Women in Number Theory Gleichstellungsbeauftragte der RWTH Groups, Representations and Cohomology Preprint Archive LANL Preprint Archive Biographies of women mathematicians Archiv der Mathematik Mathematik Online GOOGLE Diese Seite ist auch auf Deutsch erhältlich. Haftungsausschluss