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arXiv · 1201.6249

Complexes of Groups and Boundaries

Abstract

Given a complex of groups over a finite simplicial complex in the sense of Haefliger, we give conditions under which it is possible to build an EZ-structure in the sense of Farrell-Lafont for its fundamental group out of such structures for its local groups. As an application, we prove a combination theorem that yields a procedure for getting hyperbolic groups as fundamental groups of simple complexes of hyperbolic groups. The construction provides a description of the Gromov boundary of such groups.

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BibTeXRIS

Alexandre Martin. 2012-01-30. Complexes of Groups and Boundaries. https://doi.org/10.2140/gt.2014.18.31

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