Reconstructing directed graphs from their Toeplitz algebras

Nathan Brownlowe (University of Sydney)

Thursday 17th October 15:00-16:00 Maths 311B

Abstract

We started this project by asking ourselves the question: is the Toeplitz algebra of a directed graph and its gauge action enough information to recover the underlying directed graph? In this talk I will explain why the answer is no. But I will also say exactly what extra information is needed to recover the graph. This is joint work with Marcelo Laca, Dave Robertson, and Aidan Sims. 

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