On the dynamics near infinity of some polynomial mappings in $\mathbb{C}^2$

Details On the dynamics near infinity of some polynomial mappings in $\mathbb{C}^2$ On the dynamics near infinity of some polynomial mappings in $\mathbb{C}^2$

2004-07-27

arxiv.org/abs/math/0407451v1

Mathematics

Dynamical Systems

Scientific paper

We construct the Green current for a random iteration of "horizontal-like" mappings in two complex dimensions. This is applied to the study of a polynomial map $f:\mathbb{C}^2\to\mathbb{C}^2$ with the following properties: 1. infinity is $f$-attracting, 2. $f$ contracts the line at infinity to a point not in the indeterminacy set. Then the Green current of $f$ can be decomposed into pieces associated with an itinerary determined by the indeterminacy points. We also study the set of escape rates near infinity, i.e. the possible values of the function $\limsup \frac{1}{n}\log^+\log^+ \norm{f^n}$. We exhibit examples for which this set contains an interval.

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