Invariant domains and singularities

Invariant domains and singularities
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不变域和奇点

DOI:
10.1017/s0305004100073345
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发表时间:
1995
影响因子:
0.8
通讯作者:
W. Bergweiler
W. Bergweiler
中科院分区:
数学2区
文献类型:
--
作者:
W. Bergweiler

文献摘要

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设U是整超越函数f的Fatou集的不变分支,使得f的迭代在U中趋于∞。设P(f)是f的所有临界值和渐近值的前向轨道的集合的闭包。证明了存在一个序列pn∈P(f)使得dist(pn,U)= o(|PN|),其中dist(·,·)表示欧几里得距离。另一方面,我们给出dist(P(f),U)> 0的例子。在这个例子中,U是由一个约旦曲线。
Abstract Let U be an invariant component of the Fatou set of an entire transcendental function f such that the iterates of f tend to ∞ in U. Let P(f) be the closure of the set of the forward orbits of all critical and asymptotic values of f. We show that there exists a sequence pn∈P(f) such that dist(pn, U) = o(|pn|), where dist(·, ·) denotes Euclidean distance. On the other hand, we give an example where dist (P(f), U) > 0. In this example, U is bounded by a Jordan curve.