Tel Aviv University Hello everyone, The next colloquium talk will be held on: Monday, 31/12/2012, 12:15, Schreiber 006, Tel Aviv University. Speaker: Fedor Nazarov (Kent State University) Title: The ball is a local minimizer of the optimal lattice packing density in $R^3$. The abstract is given below. Tea and coffee at 12:00, same room. Hope to see you there. For information about future colloquia, see <http://www.math.tau.ac.il/~ostrover/colloquium/colloq2012.html> Yours, Yaron ************************************* Abstract: We show that every symmetric convex body $K\subset R^3$ sufficiently close to the unit ball admits a lattice packing whose density is not less than that for the ball and is strictly larger unless $K$ is an ellipsoid. I hope to be able to present the full proof. This is a joint work with Yoav Kallus. --------------------------------------------------------- Technion Math Net-2 (TECHMATH2) Editor: Michael Cwikel <techm@math.technion.ac.il> Announcement from: <ostrover@post.tau.ac.il>