Julia sets as buried Julia components

Julia sets as buried Julia components
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Julia 设置为埋藏的 Julia 组件

DOI:
10.1090/tran/8144
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发表时间:
2017-07
影响因子:
1.3
通讯作者:
Fei Yang
Fei Yang
中科院分区:
数学1区
文献类型:
--
作者:
Youming Wang;Fei Yang

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设f是一个d2的有理映射,其Julia集连通但不等于整个黎曼球面。证明了存在一个有理映射g,使得g包含一个隐Julia分支,该分支上的动力学与f在Julia集上的动力学拟共形共轭当且仅当f不具有抛物盆和Siegel圆盘.如果这样的g存在,那么可以选择度使得$\text{deg}(g)\leq 7 d-2$。特别是,如果f是一个多项式,那么g可以被选择为使得g = 4d+4。此外,还构造了一些其Julia集包含掩埋Jordan曲线的四次和三次有理映射。
Let $f$ be a rational map with degree $d\geq 2$ whose Julia set is connected but not equal to the whole Riemann sphere. It is proved that there exists a rational map $g$ such that $g$ contains a buried Julia component on which the dynamics is quasiconformally conjugate to that of $f$ on the Julia set if and only if $f$ does not have parabolic basins and Siegel disks. If such $g$ exists, then the degree can be chosen such that $\text{deg}(g)\leq 7d-2$. In particular, if $f$ is a polynomial, then $g$ can be chosen such that $\text{deg}(g)\leq 4d+4$. Moreover, some quartic and cubic rational maps whose Julia sets contain buried Jordan curves are also constructed.
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