Expanders are counterexamples to the coarse Baum–Connes conjecture
Yeong Chyuan Chung
Leiden University, NetherlandsPiotr W. Nowak
Polish Academy of Sciences, Warsaw, Poland
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Abstract
We consider an coarse Baum–Connes assembly map for , and show that it is not surjective for expanders arising from residually finite hyperbolic groups.
Cite this article
Yeong Chyuan Chung, Piotr W. Nowak, Expanders are counterexamples to the coarse Baum–Connes conjecture. J. Noncommut. Geom. 17 (2023), no. 1, pp. 305–331
DOI 10.4171/JNCG/498