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Local Connectivity of Polynomial Julia sets at Bounded Type Siegel Boundaries
Published 27 Oct 2020 in math.DS | (2010.14003v4)
Abstract: Consider a polynomial $f$ of degree $d \geq 2$ that has a Siegel disk $\Delta_f$ with a rotation number of bounded type. We prove that there does not exist a hedgehog containing $\Delta_f$. Moreover, if the Julia set $J_f$ of $f$ is connected, then it is locally connected at the Siegel boundary $\partial \Delta_f$.
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