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    Logic and operator algebras

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    The most recent wave of applications of logic to operator algebras is a young and rapidly developing field. This is a snapshot of the current state of the art.Comment: A minor chang

    The relative commutant of separable C*-algebras of real rank zero

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    We answer a question of E. Kirchberg (personal communication): does the relative commutant of a separable C*-algebra in its ultrapower depend on the choice of the ultrafilter?Comment: To appear in Journal of Functional Analysi