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Quasi-isometry Invariants from Decorated Trees of Cylinders of Two-Ended JSJ Decompositions (1403.2865v2)

Published 12 Mar 2014 in math.GR

Abstract: We construct quasi-isometry invariants of a one-ended finitely presented group by considering the tree of cylinders of a two-ended JSJ decomposition of the group. When the group satisfies additional quasi-isometric rigidity hypotheses we construct finer invariants by also considering relative amounts of stretching across edges of the tree of cylinders.

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