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arxiv: 1611.08462 · v2 · pith:LFEGRL2Dnew · submitted 2016-11-25 · 🧮 math.OA · math.LO

Axiomatizability of the stable rank of C*-algebras

classification 🧮 math.OA math.LO
keywords stablerankalgebrasaxiomatizabilityaxiomatizableclassconsequencecontinuous
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We show that the class of C*-algebras with stable rank greater than a given positive integer is axiomatizable in logic of metric structures. As a consequence we show that the stable rank is continuous with respect to forming ultrapowers of C*-algebras, and that stable rank is Kadison--Kastler stable.

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