Slides of recent talks

• Munster, June, 2004.
• LMS Lectures, July 2004 (10 lectures).
• AIM, June 2005 (Boundaries of groups)
• Bedlewo, Poland, July 2005 (Weighted L^2 cohomology)
  
• Stanford, August 2005 (Weighted L^2 cohomology)
• University of Western Ontario, February 2006 (Survey of Coxeter groups)
• Greensboro, NC, March 2006 (Examples from Coxeter Groups)
• Fayetteville, Arkansas, April 2006 (The cohomology of Coxeter groups with group ring coefficients)
• Centre de Recherches Mathematiques, Montreal, July, 2006 (5 lectures on L^2 Betti numbers): Lecture 1, Lecture 2, Lecture 3, Lecture 4, Lecture 5
• Morelia, January 2007 (L^2 cohomology of hyperplane complements)
• AMS special session, Oxford, Ohio, March 2007 (L^2 cohomology of hyperplane complements)
• MSRI Introduction to Geometric Group Theory Workshop, August 2007 (Cohomology of Coxeter groups and buildings)
• OSU, Lefschetz Colloquium, November 2007 (Introduction to geometric group theory)
• Milwaukee, STDC, March 2008 (Compactly supported cohomology of buildings)
• OSU, Examples of Groups Conference, May 2008 (Coxeter groups) Lecture 1, Lecture 2
• Peking University, June 2008 (Coxeter groups and nonpositive curvature)
• Hangzhou, July 2008 (Summer School on Transformation Groups and Orbifolds) Lecture: 1, 2, 3, 4, 5