Logarithmic derivatives in annuli (Q1025022)
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scientific article; zbMATH DE number 5566246
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Logarithmic derivatives in annuli |
scientific article; zbMATH DE number 5566246 |
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Logarithmic derivatives in annuli (English)
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18 June 2009
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The authors define Nevanlinna functions in annuli with two independent variables. They prove a version for annuli of Valiron's decomposition theorem. Using this result and others proved in the paper a generalized logarithmic derivative lemma for annuli is established. This lemma includes the same for a disk and the complex plane.
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meromorphic functions
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Nevanlinna theory
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logarithmic derivative
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annuli
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