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arXiv 1301.2193math.DSmath.CV
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整函数的正则性与快速逃逸点

Regularity and fast escaping points of entire functions

Philip J. Rippon, Gwyneth M. Stallard

摘要:

设$f$是一个超越整函数.快速逃逸集$A(f)$,$f$最大模增长的各种正则性条件,以及最近的相当快速逃逸集$Q(f)$都被用来在关于$f$迭代的基本问题上取得进展。在本文中,我们建立了这三个概念之间的新关系。证明了弱正则性条件是$Q(f)=A(f)$的充要条件,并给出了$Q(f)\neq A(f)$满足弱正则性条件的函数的例子。我们还适用的结果Beurling有关的最小模的$f$的增长,其最大模的大小,以建立一个更强的正则性条件,称为对数正则性持有一大类的功能,特别是在Eremenko-Lyubich类${\mathcal B}$的功能。

英文摘要:

Let $f$ be a transcendental entire function. The fast escaping set $A(f)$, various regularity conditions on the growth of the maximum modulus of $f$, and also, more recently, the quite fast escaping set $Q(f)$ have all been used to make progress on fundamental questions concerning the iteration of $f$. In this paper we establish new relationships between these three concepts. We prove that a certain weak regularity condition is necessary and sufficient for $Q(f)=A(f)$ and give examples of functions for which $Q(f)\neq A(f)$. We also apply a result of Beurling that relates the size of the minimum modulus of $f$ to the growth of its maximum modulus in order to establish that a stronger regularity condition called log-regularity holds for a large class of functions, in particular for functions in the Eremenko-Lyubich class ${\mathcal B}$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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