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Comparison radius and mean topological dimension: $mathbb{Z}^d$-actions

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 نشر من قبل Zhuang Niu
 تاريخ النشر 2019
  مجال البحث
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 تأليف Zhuang Niu




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Consider a minimal free topological dynamical system $(X, T, mathbb{Z}^d)$. It is shown that the comparison radius of the crossed product C*-algebra $mathrm{C}(X) rtimes mathbb{Z}^d$ is at most the half of the mean topological dimension of $(X, T, mathbb{Z}^d)$. As a consequence, the C*-algebra $mathrm{C}(X) rtimes mathbb{Z}^d$ is classifiable if $(X, T, mathbb{Z}^d)$ has zero mean dimension.



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