Morita equivalence of two $\ell^p$ Roe-type algebras

Yeong Chyuan Chung

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arXiv · 2306.14721

Morita equivalence of two $\ell^p$ Roe-type algebras

Yeong Chyuan Chung

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Abstract

Given a metric space with bounded geometry, one may associate with it the $\ell^p$ uniform Roe algebra and the $\ell^p$ uniform algebra, both containing information about the large scale geometry of the metric space. We show that these two Banach algebras are Morita equivalent in the sense of Lafforgue for $1\leq p<\infty$. As a consequence, these two Banach algebras have the same $K$-theory. We then define an $\ell^p$ uniform coarse assembly map taking values in the $K$-theory of the $\ell^p$ uniform Roe algebra and show that it is not always surjective.

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BibTeX RIS

Yeong Chyuan Chung. 2023-06-26. Morita equivalence of two $\ell^p$ Roe-type algebras. https://arxiv.org/abs/2306.14721

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