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Caltech

Noncommutative Geometry Seminar

Wednesday, March 4, 2015
4:00pm to 5:00pm
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Subfactors and NCG
Dave Penneys, Professor, Mathematics, UCLA,

I'll discuss various approaches to connect subfactor theory and noncommutative
geometry via planar algebras. I'll begin with the definition of a planar algebra and some
basic examples. Next, we'll see how Jones found the cyclic category in the annular
Temperley-Lieb category. I'll then discuss joint work with Hartglass on canonical
C*-algebras associated to a planar algebra. We'll discuss their K-theory and various ways
to construct Dirac operators.

For more information, please contact Farzad Fathizadeh by email at [email protected] or visit http://www.math.caltech.edu/~ncg/.