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Stronger forms of sensitivity for dynamical systems. (English) Zbl 1132.54023
Discrete dynamical systems induced by continuous self-maps of compact metric spaces are considered. The paper considers the problem of dependence on initial conditions from the frame of “large” subsets of $$\mathbb{N}$$. Mainly considered are “syndetic sensitivity” and “cofinite sensitivity”. In this setting the following is established:
(i) Any syndetically transitive, non-minimal map is syndetically sensitive;
(ii) Any sensitive map of $$[0,1]$$ is cofinitely sensitive;
(iii) Any sensitive subshift of finite type is cofinitely sensitive;
(iv) Any syndetically transitive, infinite subshift is syndetically sensitive;
(v) No Sturmian subshift is cofinitely sensitive;
(vi) A transitive, sensitive map and not syndetically sensitive is constructed.

##### MSC:
 54H20 Topological dynamics (MSC2010) 37B10 Symbolic dynamics
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