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arXiv math/0608027math.CVmath.DS
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Direct singularities and completely invariant domains of entire functions

Walter Bergweiler, Alexandre Eremenko

英文摘要:

Let f be a transcendental entire function that omits a complex value a. We show that for every simply connected region D that does not contain a the full preimage of D is disconnected. We conjecture that the same holds if one only assumes that a is omitted locally. We were able to prove this conjecture under the additional assumption that f is of finite order. We include some auxilliary results on the singularities of the inverses of entire functions which are of independent interest.

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