AMS Sectional Meeting Program by Special Session
Current as of Friday, April 15, 2005 00:25:30
2005 Spring Central Section Meeting
Lubbock, TX, April 810, 2005
Meeting #1006
Associate secretaries: Susan J Friedlander, AMS susan@math.northwestern.edu
Special Session on Discrete Groups, Homogeneous Spaces, Rigidity

Friday April 8, 2005, 3:00 p.m.4:50 p.m.
Special Session on Discrete Groups, Homogeneous Spaces, Rigidity, I
Room 014, Mathematics and Statistics Building
Organizers:
Alex Gorodnik, University of Michigan,Ann Arbor gorodnik@umich.edu
Hee Oh, California Institute of Technology heeoh@its.caltech.edu
Nicolas Monod, University of Chicago monod@math.uchicago.edu

3:00 p.m.
Metric classification of 3D Riemannian homogeneous spaces of positive Ricci curvature.
Victor Patrangenaru*, Texas Tech University, Department of Mathematics and Statistics
(10065333) 
3:30 p.m.
Cocycle Superrigidity through geometry.
David Fisher, CUNY Lehman College
Theron J Hitchman*, Rice University
(10063796) 
4:00 p.m.
Travelling Salesman Groups.
Azer Akhmedov*, University of California Santa Barbara
(100651122) 
4:30 p.m.
Actions of Chevalley groups on hyperbolic spaces.
Jason F Manning*, Caltech
(10062095)

3:00 p.m.

Saturday April 9, 2005, 9:00 a.m.11:20 a.m.
Special Session on Discrete Groups, Homogeneous Spaces, Rigidity, II
Room 014, Mathematics and Statistics Building
Organizers:
Alex Gorodnik, University of Michigan,Ann Arbor gorodnik@umich.edu
Hee Oh, California Institute of Technology heeoh@its.caltech.edu
Nicolas Monod, University of Chicago monod@math.uchicago.edu

9:00 a.m.
Measurable rigidity for group actions on infinite volume homogeneous spaces.
Alex Furman*, University of Illinois at Chicago (UIC)
(10063789) 
10:00 a.m.
Free subgroups of linear groups.
T Gelander*, Yale
E Breuillard, CNRS
(10062291) 
11:00 a.m.
Minimal volume entropy on trees.
Seonhee Lim*, Yale university/ENSParis
(100637147)

9:00 a.m.

Saturday April 9, 2005, 3:00 p.m.4:45 p.m.
Special Session on Discrete Groups, Homogeneous Spaces, Rigidity, III
Room 014, Mathematics and Statistics Building
Organizers:
Alex Gorodnik, University of Michigan,Ann Arbor gorodnik@umich.edu
Hee Oh, California Institute of Technology heeoh@its.caltech.edu
Nicolas Monod, University of Chicago monod@math.uchicago.edu

3:00 p.m.
Some arithmetic groups that cannot act on the line.
Lucy Lifschitz, University of Oklahoma
Dave Witte Morris*, University of Lethbridge
(10062041) 
4:00 p.m.
Constructing diffeomorphisms to negatively curved manifolds.
Chris Connell*, Indiana University
(100653116)

3:00 p.m.

Sunday April 10, 2005, 9:00 a.m.11:20 a.m.
Special Session on Discrete Groups, Homogeneous Spaces, Rigidity, IV
Room 014, Mathematics and Statistics Building
Organizers:
Alex Gorodnik, University of Michigan,Ann Arbor gorodnik@umich.edu
Hee Oh, California Institute of Technology heeoh@its.caltech.edu
Nicolas Monod, University of Chicago monod@math.uchicago.edu

9:00 a.m.
Asymptotic expenders and Ramanujan graphs.
Rostislav Grigorchuk*, Texas A&M University
(100620100) 
10:00 a.m.
Divergent torus orbits in homogeneous spaces of rational rank two.
Pralay Chatterjee*, Department of Maths, Rice University
Dave Witte Morris, Department of Mathematics and Computer Science, University of Lethbridge
(100600121) 
10:30 a.m.
Weakly hyperbolic actions of Kazhdan groups on tori.
Benjamin I Schmidt*, University of Michigan
(10063783) 
11:00 a.m.
Multiple mixing of noncommuting automorphisms.
Alexander Gorodnik*, California Institute of Technology
(100637118)

9:00 a.m.