Proper actions of wreath products and generalizations
Résumé
We study stability properties of the Haagerup property and of coarse embeddability in a Hilbert space, under certain semidirect products. In particular, we prove that they are stable under taking standard wreath products. Our construction also allows for a characterization of subsets with relative Property T in a standard wreath product.
Domaines
Théorie des groupes [math.GR]
Fichier principal
2012-02-27_gauge_arXiv_from_YC_20100823_gauge20120213.pdf (404.11 Ko)
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