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Automorphisms with exotic orbit growth

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Baier S., Jaidee S., Stevens S., Ward T.

Acta Arithmetica

2013

tom 158

nr 2

173-197

The dynamical Mertens' theorem describes asymptotics for the growth in the number of closed orbits in a dynamical system. We construct families of ergodic automorphisms of fixed entropy on compact connected groups with a continuum of growth rates on two different growth scales. This shows in particular that the space of all ergodic algebraic dynamical systems modulo the equivalence of shared orbit-growth asymptotics is not countable. In contrast, for the equivalence relation of measurable isomorphism or equal entropy it is not known if the quotient space is countable or uncountable (this problem is a manifestation of Lehmer's problem).

Ograniczanie wyników

1 Acta Arithmetica

1 Baier S.

1 Jaidee S.

1 Stevens S.

1 Ward T.

1 2013

Wyniki wyszukiwania

Automorphisms with exotic orbit growth