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Orbit growth for algebraic flip systems

Published online by Cambridge University Press:  07 August 2014

RICHARD MILES*
Affiliation:
School of Mathematics, University of East Anglia, Norwich, NR4 7TJ, UK email r.miles@uea.ac.uk
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Abstract

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An algebraic flip system is an action of the infinite dihedral group by automorphisms of a compact abelian group $X$. In this paper, a fundamental structure theorem is established for irreducible algebraic flip systems, that is, systems for which the only closed invariant subgroups of $X$ are finite. Using irreducible systems as a foundation, for expansive algebraic flip systems, periodic point counting estimates are obtained that lead to the orbit growth estimate

$$\begin{eqnarray}Ae^{hN}\leqslant {\it\pi}(N)\leqslant Be^{hN},\end{eqnarray}$$
where ${\it\pi}(N)$ denotes the number of orbits of length at most $N$, $A$ and $B$ are positive constants and $h$ is the topological entropy.

Information

Type
Research Article
Copyright
© Cambridge University Press, 2014