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Minimal generators for ergodic endomorphisms. (English) Zbl 0676.28009
Let f be an ergodic endomorphism on a Lebesgue space with finite generator. The author gives a sharp lower bound for the number of sets of a finite generator.
Reviewer: M.Denker

MSC:
28D05 Measure-preserving transformations
28D20 Entropy and other invariants
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