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math.GR2000
Maximally symmetric trees
Lee Mosher, Michah Sageev, Kevin Whyte
We characterize the ``best'' model geometries for the class of virtually free groups, and we show that there is a countable infinity of distinct ``best'' model geometries in an app…
math.GR2000
Quasi-actions on trees I. Bounded valence
Lee Mosher, Michah Sageev, Kevin Whyte
Given a bounded valence, bushy tree T, we prove that any cobounded quasi-action of a group G on T is quasiconjugate to an action of G on another bounded valence, bushy tree T'. Thi…
math.GR2000
Quasi-actions on trees: research announcement
Lee Mosher, Michah Sageev, Kevin Whyte
We develop a battery of tools for studying quasi-isometric rigidity and classification problems for splittings of groups. The techniques work best for finite graphs of groups where…