Talks
Puerto Rico, Median spaces and property (T) , Workshop on Analysis on groups, March 17, 2008.
CUNY Graduate center, Median spaces , February 15, 2008.
MSRI, Median spaces Topics in geometric group theory conference, November 7, 2008.
Marseille, Espaces médians et propriété (T) , September 28, 2007.
MSRI, Gromov's theorem on polynomial growth groups , August 24, 2007.
Bedlewo, Summer school on non-positive curvature, Median spaces , June 29, 2007.
Université de Caen, Espaces médians , June 13, 2007.
Penn State University, Median spaces and Property (T) , April 13, 2007.
The Ohio-State University, Median spaces , March 28, 2007.
EPFL, Phylogenetic tree-space as a median space , March 13, 2007.
EPFL, Embedding median spaces in L1-spaces , March 12, 2007.
The Ohio-State University, Median spaces and Property (T) , February 22, 2007.
Columbia University, Median spaces , February 16, 2007.
Orsay, A characterization of hyperbolicity , February 2, 2007.
Université de Lille, A characterization of hyeprbolicity , February 1, 2007.
EPFL, Median spaces and Property (T) , January 22, 2007.
University of Geneva, Median spaces and Property (T) , December 19, 2006.
ETHZ, Traces and groups C*-algebras , December 18, 2006.
Neuchatel University, A characterization of hyperbolicity , Groups and Geometry day, November 27, 2006.
ETHZ, A characterization of hyperbolicity , November 1, 2006.
The Ohio-State University, A characterization of hyperbolicity , October 18, 2006.
Louisiana State University, A characterization of hyperbolicity , October 13, 2006.
Cornell University, A characterization of hyperbolicity , September 22, 2006.
The Ohio-State University, Gromov hyperbolic groups , Invitation to research, May 8, 2006.
Univerity of Pennsylvania, Group ring conjectures , Colloquium April 5, 2006.
CMI Marseille, Propriété DR et distorsion de sous-groupes , March 6, 2006.
University of Chicago, Property RD , March 2, 2006.
Palo Alto, AIM workshop on property RD Southampton, A characterization of hyperbolicity , December 16th, 2005.
Imperial College London, The property of Rapid Decay on locally compact groups , December 15th, 2005.
Glasgow, Homotopy idempotents on closed manifolds and the Geoghegan conjecture , December 12, 2005.
Michigan Ann Arbor, A characterization of hyperbolicity , November 18, 2005.
The Ohio-State University, Introduction to relatively hyperbolic groups , October 5, 2005
Workshop on the Baum-Connes conjecture, University of Neuchatel, Group rings, completions and conjectures , September 8, 2005.
TIFR Mumbai, The property of Rapid Decay on locally compact groups , August 22, 2005.
HRI Allahabad, Homotopy idempotents on closed manifolds and the Geoghegan conjecture , July 29, 2005.
Wasach Topology Conference, Homotopy idempotents on closed manifolds , June 2, 2005.
IAS Princeton, The Geometry of Groups , 4 undergraduate lectures, May 2005.
CUNY Graduate Center, The property of Rapid Decay on locally compact groups , March 8, 2005.
Yale University, The property of Rapid Decay for lattices in rank one Lie groups , February 28, 2005.
Columbia University, Groups acting on wall-spaces , February 25, 2005.
University of Utah, The property of Rapid Decay , February 1, 2005.
University of Utah, On the Geoghegan conjecture , February 1, 2005.
University of Illinois at Urbana-Champaign, The property of Rapid Decay , January 26, 2005.
Workshop on K-theory and the geometry of groups, University of Hawaii, Property RD and groups acting on CAT(0) cube complexes , January 20, 2005. The Ohio-State University, The property of Rapid Decay , January 11, 2005. CMS Winter 2004 meeting in Montréal, Discrete groups, operator norms and distortion , December 13, 2004. University of Minnesota , Group ring conjectures , December 7, 2004. G3 , Destin Florida, Toward a generalization of hyperbolic spaces II , November 12, 2004. Cornell University , A characterization of hyperbolic spaces , November 9, 2004. Texas A&M, Some groups acting on CAT(0) cube complexes , October 13, 2004. Albany 2004, A characterization of hyperbolic spaces and R-trees , parallel session, October 9, 2004. Binghamton University, On the Geoghegan conjecture , September 9, 2004. Albany CBMS conference, Toward a generalization of hyperbolic spaces , August 18, 2004. Université de Neuchâtel , Normes d'opérateurs et groupes de Lie , June 29, 2004. Cortona, Random walks conference Property RD on locally compact groups , parallel session , June 14, 2004. Wabash analysis conference Indiana, Property RD on locally compact groups , April 3, 2004. IUPUI, Indianapolis, Group ring conjectures , April 2, 2004. Cornell University , Group ring conjectures , April 1, 2004 in the Oliver Club . Caltech, Pasadena, Rapid decay and relatively hyperbolic groups , March 26, 2004. McMaster University Hamilton, On Euler Characteristics for groups , March 8, 2004. Cornell University , Some groups acting on CAT(0) cube complexes , February 17, 2004.CUNY Graduate Center, Some groups acting on CAT(0) cube complexes , February 6, 2004. CMI Marseille, La propriété DR pour les réseaux en rang 1 , January 5, 2004. Joint India-AMS meeting, Bangalore, Some groups acting on L-delta-spaces , December, 2003. Paris Jussieu, La propriété DR pour certains groupes relativement hyperboliques , Decembre 4, 2003. Université de Neuchâtel , La propriété DR pour certains groupes relativement hyperboliques , December 2, 2003. ETH Zürich, The Rapid Decay property for all rank one lattices , December 1, 2003, Algebra-Topology seminar. Paris Orsay, Construction d'un complexe cubique CAT(0) à partir d'un espace a murs , November 18, 2003. Munster, New examples of groups with the Rapid Decay property , November 6, 2003. Brandeis University , From wall spaces to CAT(0) cube complexes , October 21, 2003. Cornell University , From wall spaces to CAT(0) cube complexes , October 16, 2003. AMS meeting, Binghamton, Rapid Decay and Geometry (joint with K. Ruane), October 12, 2003. University of Adelaide , Introduction to the Rapid Decay property , September 26, 2003. St. Stephens college, New Delhi, Groups and geometry , September 11, 2003. HRI Allahabad, Euler Characteristics for groups , September 9, 2003. TIFR Bombay, New examples of groups with the Rapid Decay property , Colloquium, August 7, 2003. Durham LMS Symposium, New examples of groups with the Rapid Decay Property , July 6, 2003. Université de Neuchâtel , Cubical CAT(0) complexes , June 21, 2003. Université de Neuchâtel , La conjecture de Bass , Colloque, June 16, 2003. Gaeta, Grigorchuck's 50th birthday, On L-delta spaces , parallel session , June 2, 2003. Journées Algèbres d'Opérateurs, Orléans, The Rapid Decay property for cubical CAT(0) groups , May 6, 2003. Kent State University , Group ring conjectures , Colloquium, March 20, 2003. Cornell University , On the exceptional group SL_3(\bf O) , Lie groups seminar, February 14, 2003. Cornell University , Twisted idempotent conjectures , February 11, 2003. Université de Neuchâtel , Conjecture des idempotents tordue par un 2-cocycle , January 13, 2003. GGT 2002 Guwahati, Twisted idempotent conjectures , December 18, 2002. The Ohio State University , Twisted idempotent conjectures , November 26, 2002. Cornell University , The Rapid Decay property , October 17, 2002 in the Oliver Club . Binghamton University , The Bass conjecture for amenable groups , October 10, 2002. Cornell University , On the Bass conjecture , September 17, 2002. University of Adelaide , Around the Bass conjecture , May 3, 2002. TIFR Bombay, The Rapid Decay property for discrete groups , March 13, 2002. Université de Neuchâtel , Around the Rapid Decay property , February 13, 2002, SMS Geometry Meeting . ETH Zürich, From acyclic groups to the Bass conjecture for amenable groups , January 14, 2002, Algebra-Topology seminar. ETH Zürich, An introduction to property (RD) for discrete groups , November 7, 2001, Differential geometry seminar. Université de Lyon, Propriété (DR) et isométries grossières , November 6, 2001, Séminaire de Géométrie Noncommutative. CRM Barcelona, euroconference on proper group actions, On property (RD) for discrete groups , September 19, 2001. Penn State University, workshop on negatively curved spaces, Property (RD) for cocompact lattices in a finite product of rank one Lie groups , March 19, 2001.
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