Escaping points of meromorphic functions with a finite number of poles
被引:0
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作者:
P. J. Rippon
论文数: 0引用数: 0
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机构:The Open University,Department of Pure Mathematics
P. J. Rippon
G. M. Stallard
论文数: 0引用数: 0
h-index: 0
机构:The Open University,Department of Pure Mathematics
G. M. Stallard
机构:
[1] The Open University,Department of Pure Mathematics
来源:
Journal d’Analyse Mathématique
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2005年
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96卷
关键词:
Entire Function;
Meromorphic Function;
Closed Subset;
Jordan Curve;
Simple Polygon;
D O I:
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中图分类号:
学科分类号:
摘要:
We establish several new properties of the escaping setI(f)={z∶fn(z)→∞ andfn(z)⇑∞ for eachn∈N} of a transcendental meromorphic functionf with a finite number of poles. By considering a subset ofI(f) where the iterates escape about as fast as possible, we show thatI(f) always contains at least one unbounded component. Also, iff has no Baker wandering domains, then the setI(f)⊂J(f), whereJ(f) is the Julia set off, has at least one unbounded component. These results are false for transcendental meromorphic functions with infinitely many poles.