Von Neumann Algebras and Ergodic Theory of Group Actions
October 27-31, 2008, Oberwolfach, Germany
Organized by D. Bisch, V. F. R. Jones, D. Gaboriau and S. Popa

Monday, October 27
9:20-10:10 Damien Gaboriau Orbit Equivalence and von Neumann Algebras
10:25-11:15 Stefaan Vaes Rigidity for II1 factors: fundamental groups, bimodules and subfactors
11:30-12:20 Dietmar Bisch Subfactors And Planar Algebras
15:45-16:35 Dima Shlyakhtenko Random matrices, Free probability and Subfactors
16:45-17:35 Feng Xu Subfactor Lattices from Conformal Field Theory
17:45-18:30 Sorin Popa Open Problems
Tuesday, October 28
9:10-10:10 Jesse Peterson L2-rigidity in von Neumann algebras
10:20-11:10 Adrian Ioana Relative property T for the subequivalence relations induced by SL(2,Z) acting on T2
11:30-12:20 Masaki Izumi Generalized CCR flow
16:00-16:50 Narutaka Ozawa II1 factors with at most one Cartan subalgebra
17:10-17:40 Cyril Houdayer Prime factors and amalgamated free products
17:50-18:20 Yves Stalder Haagerup property for wreath products
Wednesday, October 29
9:10-10:00 Wolfgang Lück K and L-theory of group rings and topological rigidity
10:10-11:10 Roman Sauer A cocycle rigidity theorem for hyperbolic lattices
11:10-11:40 Aurelien Alvarez Free product decompositions for equivalence relations
11:50-12:20 Ricahrd Burstein Subfactors and Hadamard matrices
Thursday, October 30
9:10-10:00 Vaughan Jones Bimodules and an orthogonal approach to planar algebras
10:20-11:10 Antony Wassermann Connes fusion for twisted loop groups
11:30-12:20 Thomas Schick L2-Betti numbers and the Atiyah conjecture
16:00-16:30 Inessa Epstein Subequivalence relations and orbit inequivalence actions of nonamenable groups
16:50-17:20 Andreas Thom Examples of hyperlinear groups without factorization property
17:40-18:10 Hiroki Sako Biexactness and orbit equivalence rigidity
20:00- Stefaan Vaes Cocycle and orbit superrigidity for lattices in SL(n,R) acting on homogeneous spaces
Friday, October 31
9:10-10:00 Yasuyuki Kawahigashi Moonshine, pariah groups and operator algebras
10:20-10:50 Pinhas Grossman Strong singularity for subfactors
11:10-11:40 Yoshikata Kida Measurable rigidity for some amalgamated free products
11:50-12:20 Mikael Pichot Groups of intermediate rank
14:00-14:30 Todor Tsankov Positive definite functions and equivalence relations
14:40-15:10 Shamindra Kumar Ghosh The planar algebra of group-type subfactors