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arXiv · 1002.2564

Cohomology computations for Artin groups, Bestvina-Brady groups, and graph products

Michael W. Davis·Boris Okun
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Abstract

We compute: * the cohomology with group ring coefficients of Artin groups (or actually, of their associated Salvetti complexes), Bestvina-Brady groups, and graph products of groups, * the L^2-Betti numbers of Bestvina-Brady groups and of graph products of groups, * the weighted L^2-Betti numbers of graph products of Coxeter groups. In the case of arbitrary graph products there is an additional proviso: either all factors are infinite or all are finite.(However, for graph products of Coxeter groups this proviso is unnecessary.)

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Michael W. Davis, Boris Okun. 2010-02-12. Cohomology computations for Artin groups, Bestvina-Brady groups, and graph products. https://arxiv.org/abs/1002.2564

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