A rigidity framework for Roe-like algebras
arxiv(2024)
摘要
We give a complete solution to the problem of C*-rigidity for (extended)
locally compact metric spaces. Namely, we show that (stable) isomorphisms among
Roe-like algebras always give rise to coarse equivalences. To do so, we
construct a framework to study rigidity problems for Roe-like algebras of
countably generated coarse spaces. This allows us to provide a unified proof of
C*-rigidity for Roe algebras, algebras of operators of controlled propagation,
and algebras of quasi-local operators. As further applications, we prove that
the outer automorphism groups of all of these algebras are isomorphic to the
group of coarse equivalences of the starting coarse space.
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