Entropy via multiplicity

Details Entropy via multiplicity Entropy via multiplicity

2005-05-02

arxiv.org/abs/math/0505019v3

Mathematics

Dynamical Systems

Examples refined

Scientific paper

The topological entropy of piecewise affine maps is studied. It is shown that singularities may contribute to the entropy only if there is angular expansion and we bound the entropy via the expansion rates of the map. As a corollary we deduce that non-expanding conformal piecewise affine maps have zero topological entropy. We estimate the entropy of piecewise affine skew-products. Examples of abnormal entropy growth are provided.

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