On the postcritical set of a rational map
On the postcritical set of a rational map
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关于理性地图的后批判集
DOI:
10.1007/s00208-018-1732-6
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发表时间:
2020
影响因子:
1.4
通讯作者:
McMullen, Curtis T.
中科院分区:
文献类型:
--
作者:
DeMarco, Laura G.;Koch, Sarah C.;McMullen, Curtis T.
The postcritical setP(f) of a rational mapis the smallest forward invariant subset ofthat contains the critical values off. In this paper we show that every finite setcan be realized as the postcritical set of a rational map. We also show that every mapdefined on a finite setcan be realized by a rational map, provided we allow small perturbations of the setX. The proofs involve Belyi’s theorem and iteration on Teichmüller space.
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