T&G: Shmuel Weinberger (University of Chicago), Periodic transformations on aspherical manifolds

Suppose Z/n acts on a manifold, then if it has a fixed point, the natural homomorphism Z/n --> Out(π) (π = the fundamental group) lifts to Aut(π). If π is centreless, and the aspherical manifold is locally symmetric and the action is isometric, the converse holds. We shall discuss the extent to which this observation is geometric and to what extent it's topological. (It will depend on M and it will depend on n). לאירוע הזה יש שיחת וידאו. הצטרף: https://meet.google.com/mcs-bwxr-iza

Date: 

Tue, 14/11/2017 - 12:00 to 13:30

Location: 

Room 70A, Ross Building, Jerusalem, Israel