Abstract
Given two continuous interval maps f and g, we study the periodic structure for the set of sequences generated by f and g by the rule
. It is shown that this structure is intimately related to that of Sharkovsky's Theorem, although some differences appear with the periods that are coprime with 2.
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Acknowledgements
We want to thank Professor Saber Elaydi for his comments concerning the characterization of periods of via geometric r-cycles.