title: On the fundamental group of type II1 factors.
abstract: We present here a shorter version of the proof of our earlier work, showing that the von Neumann factor associated with the group Z(2)SL(2,Z) has trivial fundamental group.
authors.affiliation: Department of Mathematics, University of California, Los Angeles, CA 90095-1555, USA.
authors.forename: Sorin
authors.initials: S
authors.lastname: Popa