Hebrew University Amitsur Algebra Seminar ****************************** Time: Thursday, Nov. 17, 12:00-13:15 Place: room 209, math building. Speaker: Doron Puder (HUJI) Title: Mineyev and Dicks' proof of the strengthened Hanna Neumann conjecture Abstract: Very recently, Igor Mineyev gave a full proof of the Strengthened Hanna Neumann Conjecture, solving a more than fifty years old open problem which has generated a lot of interest and research. Given two f.g. subgroups H,K of some free group, the (non-strengthened) conjecture states that the rank of their intersection can be bounded as follows: if h,k denote the ranks of H,K respectively and s denotes the rank of their intersection, then (s-1) \le (h-1)(k-1) After Mineyev's announcement, Warren Dicks considerably simplified the proof. In this talk, we shall give a complete proof for this result following Dicks' simplification. You are cordially invited! <http://math.huji.ac.il/amitsur.html> --------------------------------------------------------- Technion Math Net-2 (TECHMATH2) Editor: Michael Cwikel <techm@math.technion.ac.il> Announcement from: Gili Schul <gili.schul@mail.huji.ac.il>