Invited Talks:

Slides for Harvard Gauge Theory Seminar / Northern California Symplectic Seminar

Slides for Yale Colloquium

2008 UMass Amherst, Conference on Transformation Groups in Geometry and Topology (7/2008).

2008 CRM-Barcelona (Spain), Sixth Workshop on Geometry and Physics GAP VI (6/2008).

2008 University of Washington, Combinatorics Seminar (6/2008)

2008 Brandeis University, Every-Topic/Every-Person Seminar (5/2008)

2008 MIT, Group Actions in Geometry Seminar (4/2008)

2008 Yale University, Colloquium (4/2008)

2008 MIT, Mathematics Lecture Series Colloquium (1/2008)

2007 MIT, PDE and Analysis Seminar (12/2007)

2007 Brown University, Geometry and Topology Seminar (11/2007)

2007 Stanford University, Northern California Symplectic Geometry Seminar (11/2007)

2007 CRM (Canada) at Universite du Quebec a Montreal, Symplectic Topology Seminar (11/2007)

2007 Rutgers University, AMS Meeting Session on Toric Varietes (10/2007)

2007 Rutgers University, AMS Meeting Session on Lie Group Actions and their Quotients (10/2007)

2007 Harvard University, Gauge Theory and Topology Seminar (09/2007)

2007 EPFL (Switzerland), Geometric Analysis Seminar (05/2007)

2007 Institut Fourier (France), Joint Mathematical Physics and Topology Seminar (05/2007)

2007 University of Washington, Combinatorics Seminar (04/2007)

2007 University of Washington, Pre-Combinatorics Seminar (04/2007)

2007 Boston University, Geometry Seminar (03/2007)

2007 Brandeis University, Topology Seminar (03/2007)

2007 University of Toronto, Symplectic Geometry Seminar (02/2007)

2006 University of Utah, AMS Meeting Session on Low Dimensional Geometry/Topology} (10/2006)

2006 University of Connecticut, AMS Meeting Session on Combinatorial Topology (10/2006)

2006 University of Chicago, Geometry/Topology Seminar (04/2006)

2006 Boston University, Geometry Seminar (04/2006)

2006 MIT, Geometry Seminar (04/2006)

2006 Stony Brook University, Geometry Seminar (02/2006)

2006 Ohio State University, Topology Seminar (01/2006)

2005 University of Michigan, Topology Seminar (04/2005)

2005 University of Michigan, Geometry Seminar (02/2005)

2004 University of Toronto, Symplectic Geometry Seminar (10/2004)

2004 Michigan State University, Symplectic Geometry Seminar (10/2004)

2004 University of Michigan, Topology Seminar (10/2004)

2004 Utrecht Universiteit (Netherlands), Conference on Lie Groups in Analysis and Mechanics (06/2004)