Characterizing rigid simplicial actions on trees

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We extend Forester's rigidity theorem so as to give a complete characterization of rigid group actions on trees (an action is rigid if it is the only reduced action in its deformation space, in particular it is invariant under automorphisms preserving the set of elliptic subgroups).
Geometric methods in group theory (2004) to appear

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Group Theory, Geometric Topology

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http://salesiana.dossiersoluciones.com/handle/123456789/146937

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/0409245
 http://arxiv.org/abs/math/0409245
 Geometric methods in group theory, Contemporary Mathematics 372 (2005), 27-33

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