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On the predictability of discrete dynamical systems
Authors:Nilson C. Bernardes Jr.
Affiliation:Instituto de Matemática, Universidade Federal Fluminense, Rua Mário Santos Braga s/n, 24020-140, Niterói, RJ, Brasil
Abstract:Let $X$ be a metric space. A function $f: X to X$ is said to be non-sensitive at a point $a in X$ if for every $epsilon > 0$ there is a $delta > 0$ such that for any choice of points $a_0 in B(a;delta)$, $a_1 in B(f(a_0);delta)$, $a_2 in B(f(a_1);delta),ldots$, we have that $d(a_m,f^m(a)) < epsilon$ for every $m geq 0$. Let $H(X)$ be the set of all homeomorphisms from $X$ onto $X$ endowed with the topology of uniform convergence. The main goal of the present paper is to prove that for certain spaces $X$, ``most' functions in $H(X)$ are non-sensitive at ``most' points of $X$.

Keywords:Homeomorphisms   predictability   recurrence   Baire category   Lebesgue measure
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