PSU Mark
Eberly College of Science Mathematics Department

Meeting Details

For more information about this meeting, contact Stephen Simpson.

Title:Graphs and uniformly hyperfinite C*-algebras
Seminar:Department of Mathematics Colloquium
Speaker:Ilijas Farah, York University, Ontario
Uniformly HyperFinite (UHF) algebras are those C*-algebras in which every finite subset is `near' a finite-dimensional full matrix subalgebra. This can be formalized in three different ways, all three being equivalent in the separable case. Separable UHF algebras were classified in the 1960s by Glimm and Dixmier. Dixmier asked whether the three definitions are equivalent in the nonseparable case. I will give a complete answer to this question. One of the methods used is a new way of associating a C*-algebra to a graph. A part of this work is joint with Takeshi Katsura.

Room Reservation Information

Room Number:MB114
Date:01 / 28 / 2010
Time:04:00pm - 05:00pm