A mathematical tour of the US
I would like to visit all 50 US states; my tally is currently at 47. Some colleagues have pointed out to me that a visit to a state shouldn't really count unless it involves a talk; so I'm also
working towards giving a mathematical talk in all 50 states. For this goal, my tally stands at a paltry 18 (plus DC).
Listed here is the first talk in each state (not counting talks given at a home institution).

- Michigan: Western Michigan University; April 14 2011
- Iowa: Iowa City; March 18 2011
- Texas: Austin; June 17 2010
- Florida: Boca Raton; October 31 2009
- Kentucky: University of Memphis; May 22 2009
- Illinois: Chicago; November 8 2008
- Tennessee: University of Memphis; February 13 2007
- New Hampshire: Dartmouth College; February 6 2007
- Delaware: University of Delaware; October 6 2006
- California: Stanford; January 24 2005
- Pennsylvania: Carnegie Mellon; February 12 2004
- New York: University of Rochester; January 26 2004
- Louisiana: New Orleans; January 12 2004
- District of Columbia: George Washington University; November 14 2003
- Indiana: Bloomington; April 5 2003
- Massachusetts: MIT; February 8 2002
- Washington: Microsoft, Redmond; January 24 2002
- Georgia: Georgia Tech; January 18 2002
- New Jersey: IAS, Princeton; October 24 2001