Geometry and Topology Seminar
Unsmoothable group actions on one-manifolds
Thomas Koberda,
Mathematics,
Univeristy of Virginia,
| I will discuss virtual mapping class group actions on compact one-manifolds. The main result will be that there exists no faithful C2 action of a finite index subgroup of the mapping class group on the circle, which generalizes results of Farb-Franks and establishes a higher rank phenomenon for the mapping class group, mirroring a result of Ghys and Burger-Monod. |
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Event Series
Geometry and Topology Seminar Series
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