An infinite C*-algebra with a dense, stably finite *-subalgebra

Niels Laustsen (Lancaster University)

Thursday 22nd March 16:00-17:00 Boyd Orr 411 *** Note room change ***


I shall describe the construction of a unital pre-C*-algebra A which is stably finite, in the sense that every left invertible square matrix over A is right invertible, while the C*-completion of A contains a non-unitary isometry, and so it is infinite.

The talk is based on a joint paper with Jared White, which will appear in Proc AMS. 

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