Hebrew University 
 
Amitsur Algebra Seminar
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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>
 
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Technion Math Net-2 (TECHMATH2)
Editor: Michael Cwikel   <techm@math.technion.ac.il> 
Announcement from: Gili Schul   <gili.schul@mail.huji.ac.il>