GAFA Seminar, Friday, Nov 16, 2001 Tel Aviv University, Schreiber building, 006 10:05 - 11:20, Prof. M.Berger (IHES) " Metric geometry from Blumenthal to Gromov" 11:20 - 11:30 Coffee break 11:30 - 12:20 , B.Klartag (Tel Aviv) "5n Minkowski symmetrizations enough to approximate a euclidean ball starting any convex body" ------------------------------------------------------ Friday, December 7, 2001 Schreiber Building 006, Tel Aviv University 9:45 - 10:05 , Coffee 10:05 - 11:00, Anatolij Plichko (Ukraine) Superstrictly singular operators. 11:00-11:15, Coffee 11:15 - 12:10, Assaf Naor (Jerusalem) Girth and Euclidean distortion