NSF, Principal Investigator: ``Geometric Group Theory via Geometric Combinatorics'', Standard grant DMS-0405783, July 15, 2004 to June 30, 2008 (extended).
NSF, Principal Investigator with L. Anderson, N. Brady, and R. Forman Co-PIs: ``The Role of Curvature in Combinatorics'', Focused Research Group DMS-0101506, July 1, 2001 to June 30, 2004.
NSF, Principal Investigator: ``Geometric Group Theory'', Standard grant DMS-9971682, July 15, 1999 to June 30, 2002.
Institute for Mathematics and its Applications, Principal Investigator with L. Anderson (Co-PI): ``CombinaTexas 2001'', Conference grant, March 2001.
NSF, Principal Investigator with L. Anderson (Co-PI): ``CombinaTexas'', Conference grant DMS-0070834, May 1, 2000 to June 30, 2000.
NSF, Faculty Associate: ``Algebraic and
Analytic Methods in the Mathematical Sciences'', Research Experience
for Undergraduates, E. Letzter and A. Boggess Co-PIs, DMS-9912192,
June 1, 2000 to May 31, 2003.
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