Boston University, Geometry Seminar, November 2007.
University of Iowa, Algebraic Geometry Seminar, October 2007.
University of Iowa, Colloquiuim, October 2007.
The Ohio State University, Algebraic Geometry Seminar, October 2007.
Humboldt Universitat, Berlin, Algebraic Geometry Seminar, July
2007.
Institut Henri Poincaré, Paris, Gromov-Witten Theory of
Stacks and Groupoids, February 2007.
IMPA, Rio de Janeiro, Brazil, Minicourse (five lectures), January
2007.
Osaka City University, International Conference on Toric
Topology, June 2006.
The Ohio State University, Graduate Student Seminar on Algebraic
Geometry, May 2006.
Banff International Research Station, Recent trends in higher
dimensional geometry, April 2006.
The Ohio State University, Graduate Student Seminar on Algebraic
Geometry, February 2006.
University of Miami, Combinatorics Seminar, February 2006.
University of Minnesota, Algebraic Geometry Seminar, December 2005.
The Ohio State University, Graduate Student Seminar on Algebraic
Geometry, October 2005.
AMS Summer Institute in Algebraic Geometry, Seattle, Washington,
July 2005.
Graduate Student Warm-Up Workshop for AMS Summer Institute
in Algebraic Geometry, Seattle, Washington, July 2005.
The Fields Institute and the Perimeter Institute, Toronto,
Thematic Program on the Geometry of String Theory,
Workshop on Schubert Varieties and Schubert Calculus, June 2005.
Harvard/MIT, Algebraic Geometry Seminar, April 2005.
University of Michigan/The Ohio State University, Algebraic
Geometry Workshop, April 2005.
University of Pennsylvania, Algebra Seminar,
November 2004.
The Ohio State University, Algebraic Geometry Seminar,
October 2004.
The Ohio State University, Algebraic Geometry Seminar, September
2004.
Brown University, Algebra Seminar, September 2004.
Northeastern University, Geometry-Algebra-Singularities-Combinatorics
Seminar, September 2004.
IAS/Park City Mathematics Institute, Research Program on Geometric
Combinatorics, Research Seminar, July 2004.
Institut de Mathématiques de Jussieu, Paris, Journées
solstice d'été, June 2004.
Special Session on Algebraic Geometry and Mirror Symmetry,
AMS Regional Meeting, Rider University, April 2004.
Colorado State University, Algebra Seminar, April 2004.
The Ohio State University, Special Seminar,
February 2004.
Michigan State University, Colloquium, February 2004.
Columbia University, Special Seminar, February 2004.
Syracuse University, Colloquium, January 2004.
University of Connecticut, Colloquium, January 2004.
University of Southern California, Special Seminar, January 2004.
The Ohio State University, Algebraic Geometry Seminar, December
2003.
Princeton University, Algebraic Geometry Seminar, November 2003.
University of Utah, Algebraic Geometry Seminar, August 2003.
Université de Montréal, CRM,
Workshop on Algebraic Structures and Moduli Spaces, July 2003.
University of Pennsylvania, Algebra Seminar, April 2003.
Duke University, Geometry/Topology Seminar, April 2003.
Harvard University, Algebraic Geometry Seminar, April 2003.
SUNY at Stony Brook, Algebra, Geometry, and Physics Seminar,
February 2003.
Colgate University, Colloquium, February 2003.
Princeton University, Noetherian Ring Seminar, November 2002.
Special Session on Modern Schubert Calculus,
AMS Regional Meeting, Northeastern University, October 2002.
Institute for Advanced Study, Mentoring Program, Research Seminar, May 2002.
University of Massachusetts at Amherst, Valley Geometry Seminar,
December 2001.
Columbia University, Junior Colloquium, November 2001.
University of California at Berkeley, Special Seminar, May 2001.
Rutgers University, Topology/Geometry Seminar, November 2000.
Special Session on Algebraic Geometry,
AMS Regional Meeting, Columbia University, November 2000.
Columbia University, Algebraic Geometry Seminar, September 2000.
Special Session on Modern Schubert Calculus,
AMS Regional Meeting, University of Toronto, September 2000.
The Ohio State University, Algebraic Geometry Seminar,
April 2000.
University of Michigan, Algebraic Geometry Seminar, November 1999.