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Singularities of meromorphic functions with Baker domains

Published online by Cambridge University Press:  28 September 2006

P. J. RIPPON
Affiliation:
Department of Mathematics, The Open University, Walton Hall, Milton Keynes MK7 6AA. e-mail: p.j.rippon@open.ac.uk, g.m.stallard@open.ac.uk
G. M. STALLARD
Affiliation:
Department of Mathematics, The Open University, Walton Hall, Milton Keynes MK7 6AA. e-mail: p.j.rippon@open.ac.uk, g.m.stallard@open.ac.uk

Abstract

We show that if $f$ is a transcendental meromorphic function with a finite number of poles and $f$ has a cycle of Baker domains of period $p$, then there exist $C > 1$ and $r_0>0$ such that $\bigg\{z:\frac1C r\lt |z|\lt Cr\bigg\}\cap \mbox{sing} (f^{-p})\ne\varnothing,{\for}r\ge r_0.$ We also give examples to show that this result fails for transcendental meromorphic functions with infinitely many poles.

Type
Research Article
Copyright
2006 Cambridge Philosophical Society

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