Surface subgroups from homology

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dc.creatorCalegari, Danny
dc.date2008-03-28
dc.date2008-03-31
dc.date.accessioned2026-07-07T09:51:31Z
dc.date.available2026-07-07T09:51:31Z
dc.descriptionLet G be a word-hyperbolic group, obtained as a graph of free groups amalgamated along cyclic subgroups. If H_2(G;Q) is nonzero, then G contains a closed hyperbolic surface subgroup. Moreover, the unit ball of the Gromov-Thurston norm on H_2(G;R) is a finite-sided rational polyhedron.
dc.description9 pages; version 2: typos corrected
dc.identifierhttps://arxiv.org/abs/0803.4137
dc.identifierhttp://arxiv.org/abs/0803.4137
dc.identifierGeom. Topol. 12 (2008), 1995-2007
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/165277
dc.subjectGroup Theory
dc.subjectGeometric Topology
dc.subject20F65; 20F67; 57M07
dc.titleSurface subgroups from homology
dc.typetext

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