Colloquium
3:30 p.m., Friday
Math 100
V.S. Sunder
The Institute of Mathematical Sciences
Chennai, India
(currently visiting MSRI, Berkeley)
Principal Graphs of Subfactors
The aim of the talk will be to discuss some of the known facts regarding the
primary invariant of a `subfactor of finite index'. So as to not unduly tax
such members of the audience who have not had the pleasure of being acquainted
with subfactors, the lecture will commence with a brief discussion of operator
algebras (von Neumann algebras, to be specific), the classification of modules
over the so-called II_1 factors, and touch on some of the beautiful
results of Jones, Ocneanu, Haagerup and Popa regarding these graph
invariants. The talk will probably
close with a small result of the speaker relating the two principal graphs.
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