Mathematics – Dynamical Systems
Scientific paper
2004-08-03
J. Reine Angew. Math. 624, 81-102 (2008).
Mathematics
Dynamical Systems
22 pages, 4 figures. A problem with the image quality of some of the figures was fixed. Some minor corrections were also made.
Scientific paper
10.1515/CRELLE.2008.081
Let f be an entire function whose set of singular values is bounded and suppose that f has a Siegel disk such that f restricts to a homeomorphism of the boundary. We show that the Siegel disk is bounded. Using a result of Herman, we deduce that if additionally the rotation number of the Siegel disk is Diophantine, then its boundary contains a critical point of f. Suppose furthermore that all singular values of f lie in the Julia set. We prove that, if f has a Siegel disk $U$ whose boundary contains no singular values, then the condition that f is a homeomorphism of the boundary of U is automatically satisfied. We also investigate landing properties of periodic dynamic rays by similar methods.
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