Mystery Mathematician Week of 2-18-08, etc...

As the number of MathNotations feed subscribers has dramatically increased, it seems unfair to leave the Mystery Mathematician just in the sidebar. One of those who solved this week's contest suggested I post it in a separate entry -- great suggestion. Thus far we have three winners and I'm hoping others will recognize the image to the left or use their research skills to identify him. I will announce all of the winners on Wed 2-27 so you still have time. I'm tempted to give a hint, but I'll hold off..

Don't forget to email me (dmarain at gee-mail dot com) with the information - PLS DO NOT POST THE NAME IN A COMMENT!

Also, try to include some anecdote about the mathematician and your source if possible. If you wish, you might also include some personal information so that I can get a feel of who is responding to this contest.

ALSO:
THERE ARE ONLY 4 MORE DAYS LEFT IN THE MATHNOTATIONS SURVEY!
The responses may not be random nor the poll scientific, but the results are nevertheless interesting! You need to visit the site to vote in the sidebar.