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arXiv · 0905.3960

Proper actions of wreath products and generalizations

Yves Cornulier·Yves Stalder·Alain Valette
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Abstract

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.

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Yves Cornulier, Yves Stalder, Alain Valette. 2009-05-25. Proper actions of wreath products and generalizations. https://arxiv.org/abs/0905.3960

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