Iteration entropy

19 Dec 2017  ·  Gathen Joachim von zur ·

We apply a common measure of randomness, the entropy, in the context of iterated functions on a finite set with n elements. For a permutation, it turns out that this entropy is asymptotically (for a growing number of iterations) close to \log_2(n) minus the entropy of the vector of its cycle lengths... For general functions, a similar approximation holds. read more

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Number Theory