Click here for a version of this page with colors.
(On some monitors, the colors do not show well.)
Welcome! If you are wondering where I come from, you can browse
some background information.
Click here for a brief explanation of these colors.
(This is available only in colors.)
I also have a list of my publications.
Here are some preprints.
Contact information (e-mail, phone, etc.).
Some math puzzles can be found here.