Dynamics of a two parameter family of plane birational maps: maximal entropy

Details Dynamics of a two parameter family of plane birational maps: maximal entropy Dynamics of a two parameter family of plane birational maps: maximal entropy

2005-05-03

arxiv.org/abs/math/0505062v1

Mathematics

Dynamical Systems

23 pages, 18 figures

Scientific paper

We consider the real dynamics of a two parameter family of plane birational maps, focusing especially on an open subset of parameter space on which the real and complex dynamics are in close agreement. On the complex side, we find a rational complex surface to which the maps extend in a well-defined fashion and then calculate the induced action on the Picard group of the surface. On the real side, we use the critical sets of the maps to produce a combinatorial model for the dynamics. By comparing the two points of view, we are able to code points in the real non-wandering set, describe the behavior of wandering orbits, and identify a measure of maximal entropy for the real dynamics.

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