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Sofic dimension for discrete measured groupoids

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 نشر من قبل David Kerr
 تاريخ النشر 2011
  مجال البحث
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For discrete measured groupoids preserving a probability measure we introduce a notion of sofic dimension that measures the asymptotic growth of the number of sofic approximations on larger and larger finite sets. In the case of groups we give a formula for free products with amalgamation over an amenable subgroup. We also prove a free product formula for measure-preserving actions.



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