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On uniformly distributed sequences of integers and Poincaré recurrence III
Published online by Cambridge University Press: 17 April 2009
Abstract
Let S be a semigroup contained in a locally compact Abelian group G. Let Ĝ denote the Bohr compactification of G. We say that a sequence contained in S is Hartman uniform distributed on G if
for any character χ in Ĝ. Suppose that (Tg)g∈s is a semigroup of measurable measure preserving transformations of a probability space (X, β, μ) and B is an element of the σ-algebra β of positive μ measure. For a map T: X → X and a set A ⊆ X let T−1A denote {x ∈ X: Tx ∈ A}. In an earlier paper, the author showed that if k is Hartman uniform distributed then
In this paper we show that ≥ cannot be replaced by =. A more detailed discussion of this situation ensues.
- Type
- Research Article
- Information
- Bulletin of the Australian Mathematical Society , Volume 68 , Issue 2 , October 2003 , pp. 345 - 350
- Copyright
- Copyright © Australian Mathematical Society 2003