Presentations for the cohomology rings of tree braid groups

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If G is a finite graph and n is a natural number, then the n-strand braid group of G is the fundamental group of the configuration space of n points on G. This article gives a complete computation of the integral cohomology rings of the n-strand braid groups in case G is a tree. Some of the argument builds on earlier joint work with Lucas Sabalka.
25 pages, 14 figures

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Algebraic Topology, Group Theory, 57M07; 20J06

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http://salesiana.dossiersoluciones.com/handle/123456789/117954

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/0610424
 http://arxiv.org/abs/math/0610424

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arXiv