Not found, error 404
The page you are looking for no longer exists. Perhaps you can return back to the homepage and see if you can find what you are looking for. Or, you can try finding it by using the search form below.
differential geometry at the Université libre de Bruxelles
Polished ammonite fossil, by Kara Stenberg, Creative Commons licence CC BY-NC 2.0.
Model of 3D projection of a 120-cell, by Edmund Harriss.
The root system of the exceptional Lie algebra E8. By Jared Tarbell, Creative Commons Licence CC BY 2.0.