Wildness of Iteration of Certain Residue-Class-Wise Affine Mappings

نویسنده

  • Stefan Kohl
چکیده

A mapping f : Z → Z is called residue-class-wise affine if there is a positive integer m such that f is affine on residue classes (mod m). The smallest such m is called the modulus of f . In this article it is shown that if the mapping f is surjective but not injective, then the set of moduli of its powers is not bounded. Further it is shown by giving examples that the three other combinations of (non-) surjectivity and (non-) injectivity do not permit a conclusion on whether the set of moduli of powers of a mapping is bounded or not.

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تاریخ انتشار 2007