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).
הצטרפות באמצעות Google Meet:‏ https://meet.google.com/mcs-bwxr-iza
‏למידע נוסף על Meet, אפשר להיכנס לאתר: https://support.google.com/a/users/answer/9282720