Institute for Mathematical Sciences

Preprint ims12-06

Anna Miriam Benini, Mikhail Lyubich
Repelling periodic points and landing of rays for post-singularly bounded exponential maps

Abstract: We show that repelling periodic points are landing points of periodic rays for exponential maps whose singular value has bounded orbit. For polynomials with connected Julia sets, this is a celebrated theorem by Douady, for which we present a new proof. In both cases we also show that points in hyperbolic sets are accessible by at least one and at most finitely many rays. For exponentials this allows us to conclude that the singular value itself is accessible.

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