Wandering continua for rational maps
Guizhen Cui Yan Gao
We prove that a Lattès map admits an always full wandering continuum if and only if it is flexible. The full wandering continuum is a line segment in a bi-infinite or one-side-infinite geodesic under the flat metric.
keywords: Julia set wandering continuum rational map Lattès map torus covering.
Scaling functions and Gibbs measures and Teichmüller spaces of circle endomorphisms
Guizhen Cui Yunping Jiang Anthony Quas
We study the scaling function of a $C^{1+h}$ expanding circle endomorphism. We find necessary and sufficient conditions for a Hölder continuous function on the dual symbolic space to be realized as the scaling function of a $C^{1+h}$ expanding circle endomorphism. We further represent the Teichmüller space of $C^{1+h}$ expanding circle endomorphisms by the space of Hölder continuous functions on the dual symbolic space satisfying our necessary and sufficient conditions and study the completion of this Teichmüller space in the universal Teichmüller space.
keywords: Scaling function Teichmüller space. g-measure
On the topology of wandering Julia components
Guizhen Cui Wenjuan Peng Lei Tan
It is known that for a rational map $f$ with a disconnected Julia set, the set of wandering Julia components is uncountable. We prove that all but countably many of them have a simple topology, namely having one or two complementary components. We show that the remaining countable subset $\Sigma$ is backward invariant. Conjecturally $\Sigma$ does not contain an infinite orbit. We give a very strong necessary condition for $\Sigma$ to contain an infinite orbit, thus proving the conjecture for many different cases. We provide also two sufficient conditions for a Julia component to be a point. Finally we construct several examples describing different topological structures of Julia components.
keywords: topology of wandering Julia components. Holomorphic dynamics iteration of rational maps

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