Awards and Honors
- 1995 National Science Foundation PostDoctoral Fellowship
- 1997 National Security Agency Young Investigator
- 1998 National Science Foundation CAREER Award
- 1999 Alfred P. Sloan Foundation Research Fellowship
- 1999 Louis A. Martarano Professorship, Penn State University
- 1999 David and Lucile Packard Research Fellowship.
- 1999 Presidential Early Career Award (awarded by President Clinton).
- 2001 Prospects in Mathematics Lecture Series, Utah State University.
- 2002 H. I. Romnes Fellowship.
- 2003 NSF-CBMS Conference Lecturer.
- 2003 Milton Brockett Porter Lectures, Rice University.
- 2003 John S. Guggenheim Foundation Fellowship.
- 2004 - present Manasse Professor of Letters and Science, U. Wisconsin.
- 2004 F. Wendell Miller Lecturer, Iowa State University.
- 2005 NSF Director's Distinguished Teaching Scholar Award.
- 2006 Distinguished Visitor (4 lectures), University of Iowa.
- 2006 Winifred Asprey Distinguished Lecturer, Vassar College.
- 2007 Favorite Instructor Award, University of Wisconsin Residence Halls.
- 2008 Hari Shankar Distinguished Lecturer, University of Northern Iowa.
- 2008 Maxson Lecture Series, Texas A&M University.
- 2008 - present Hilldale Professor of Mathematics, U. Wisconsin.
- 2008 Gentry Lecturer, Wake Forest University.
- 2008 Prosser Lecturer, Dartmouth College.
- 2008 Harvard-MIT Current Developments in Mathematics (2 lectures).
- 2009 AMS Invited Address, Joint AMS-MAA National Meeting, Washington, DC.
- 2009 Distinguished Visiting Lecturer, U. Hawaii.
- 2009 George Kempf Distinguished Lectures, Johns Hopkins University.
- 2009 A. O. L. Atkin Memorial Distinguished Lectures, U. Illinois at Chicago.
- 2009 C. S. Subramaniam Centenary Lecture, IIT, Chennai.
- 2010 UCLA Distinguished Lectures.