A Schur multiplier characterization of coarse embeddability
classification
🧮 math.GR
math.MG
keywords
groupscharacterizationcoarselycompacthilbertlocallymultiplierschur
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We give a contractive Schur multiplier characterization of locally compact groups coarsely embeddable into Hilbert spaces. Consequently, all locally compact groups whose weak Haagerup constant is 1 embed coarsely into Hilbert spaces, and hence the Baum-Connes assembly map with coefficients is split-injective for such groups.
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