Hebrew University Amitsur Algebra Seminar ---------------------------------- Time: Thursday, January 26, 12:00-13:15 Place: math 209 Speaker: Ori Parzanchevski (HUJI) Title: Tensor products and isospectral manifolds Abstract: "Isospectral manifolds" are simply different shapes which produce the same sound when vibrating. These are the counterexamples to Mark Kac's famous question "can one hear the shape of a drum?". I will present a construction method of isospectral manifolds which is based on the notion of G-sets tensoring, and which gives a surprising corollary: almost every manifold has isospectral, non-isometric covers. The talk is intended for general audience - no prior knowledge is assumed. 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>