Abstract
The notion of a plump subgroup was recently introduced by Amrutam. This is a relativized version of Powers' averaging property, and it is known that Powers' averaging property is equivalent to C∗-simplicity. With this in mind, we introduce a relativized notion of C∗-simplicity, and show that for normal subgroups it is equivalent to plumpness, along with several other characterizations.
Subject
Algebra and Number Theory
Cited by
3 articles.
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