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Topological Speedups Of ℤD-Actions, Aimee S.A. Johnson, D. M. Mcclendon
Topological Speedups Of ℤD-Actions, Aimee S.A. Johnson, D. M. Mcclendon
Mathematics & Statistics Faculty Works
We study minimal ℤd-Cantor systems and the relationship between their speedups, their collections of invariant Borel measures, their associated unital dimension groups, and their orbit equivalence classes. In the particular case of minimal ℤd-odometers, we show that their bounded speedups must again be odometers but, contrary to the 1-dimensional case, they need not be conjugate, or even isomorphic, to the original. Furthermore, we give examples of speedups of ℤd-odometers which show the significant role played by a choice of ‘cone’ associated to the speedup.