# Jerusalem Mathematics Colloquium

á"ñùú ,øãàá
è'ë ,éòéáø
íåé
á

Wednesday, 13th March 2002, 15:00-16:00

Mathematics Building, Lecture Hall 2

There is a more specialised lecture preceding this one.
Tue Mar 12 2-4pm:
"Representations of the annular Temperley-Lieb
algebras" in Room 110

##

Vaughan Jones

(University of California at Berkeley)

Spin models

** Abstract: **
The simplest of all statistical mechanical models is the Ising model
which consists of spins, capable of being in two states, interacting with
their nearest neighbours on some graph. This model was solved by Onsager
in 1944. The simplest generalisations of the Ising model are the
"spin models" where the only difference is that the number of spin
states per site may be larger than 2. Sometimes these spin models
also give invariants of knots and links. A beautiful example with
100 spin states per site, and the symmetry of the Higman-Sims finite
simple group was discovered by Jaeger but finding more examples seems
difficult.

Coffee, Cookies at the faculty lounge at 3:30.

List of talks, 2001-02

List of talks, 2000-01

List of talks, 1998-99

List of talks, 1997-98