most citedSpaces with vanishing $l\sp 2$-homology and their fundamental groups (after Farber and Weinberger)

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math.OA2007★ 7 cited

Weak amenability of CAT(0) cubical groups

Nigel Higson, Erik Guentner

We prove that if G is a discrete group that admits a metrically proper action on a finite-dimensional CAT(0) cube complex X, then G is weakly amenable. We do this by constructing u…