PSU Mark
Eberly College of Science Mathematics Department

Meeting Details

For more information about this meeting, contact Svetlana Katok, Anatole Katok.

Title:On the Greenfield-Wallach and Katok conjectures
Seminar:Department of Mathematics Colloquium
Speaker:Giovanni Forni, University of Maryland
Abstract:
We will survey recent progress on the Greenfield-Wallach and Katok conjectures on globally hypoelliptic and cohomology-free vector fields (respectively) and derive a proof of the conjectures in dimension three. The argument is based on recent work of F. and J. Rodriguez Hertz which allows us to reduce the question to the case of a Reeb flow for a contact form. The contact case is settled by invoking the Weinstein conjecture (which has been recently announced by C. Taubes).

Room Reservation Information

Room Number:MB114
Date:10 / 18 / 2007
Time:04:00pm - 05:00pm