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Showing 1 to 2 of 2 for “"Culler-Vogtmann outer space"”.
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Dynamics of irreducible endomorphisms of F_n
… of \phi on the closure \overline{CV}_n of the Culler-Vogtmann Outer space. We show that \phi acts on \overline{CV}_n with ``sink'' dynamics: there is a unique fixed point [T_{\phi}], which is attracting; for any compact neighborhood N of [T_{\phi}], there is K=K(N), such that …
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Algorithmic and statistical properties of filling elements of a free group, and quantitative residual properties of gamma-limit groups
A filling subgroup of a finitely generated free group F(X) is a subgroup which does not fix a point in any very small action free action on an R-tree. For the free group of rank two, we construct a combinatorial algorithm to determine whether or not a given finitely generated subgroup is filling. …