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Local normality of a meromorphic function and a Picard type theorem - MaRDI portal

Local normality of a meromorphic function and a Picard type theorem (Q1081728)

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scientific article; zbMATH DE number 3971156
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Local normality of a meromorphic function and a Picard type theorem
scientific article; zbMATH DE number 3971156

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    Local normality of a meromorphic function and a Picard type theorem (English)
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    1986
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    The maximal ideal space M of the Banach algebral \(H^{\infty}\) of bounded holomorphic functions on the unit disc D provides an important compactification of D. A point m of M is called regular if M has a certain analytic structure at m. The author shows the following Picard type theorem. If a meromorphic function f in D is not continuously extendable to a regular point m of the ''corona'' \(M\setminus D\), then f assumes every value, except possibly two, infinitely often in every neighborhood of m. [Reviewer's remark: To what extent can D be replaced by a more general domain ?]
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    Picard theorem
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    cluster sets
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    corona
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