Welcome to my home page.
Most of my time I am working on GAP, a system for computation group theory developed at Lehrstuhl D für Mathematik.
In fact I have converted the following pages to HTML:
You can get the converted GAP Manual, so that you can keep it on your local server.
Apart from that I am also interested in Rubik's Cube, and related puzzles. I have converted the Cube Lovers archives to HTML (all 1947 articles between July 1980 and June 1996, the index is 205k).