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Advances in Mathematics
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Advances in Mathematics
Article . 1995
License: Elsevier Non-Commercial
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Advances in Mathematics
Article . 1995 . Peer-reviewed
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Shared Values for Meromorphic Functions

Shared values for meromorphic functions
Authors: Berenstein, C.A.; Chang, D.C.; Li, B.Q.;

Shared Values for Meromorphic Functions

Abstract

The value sharing problems of meromorphic functions of one variable have gamed significant attention in the value distribution theory during the last two decades. Recently attempts have been made to extend the results or studies to meromorphic functions of several complex variables. Let \(f\) denote a nonconstant meromorphic function in \(\mathbb{C}^n\). The main result of the paper is the following: If \(f^{-1} (\alpha_j) =(D_uf)^{-1} (\alpha_j)\) (counted with multiplicities) for three distinct polynomials \(\alpha_j\) or \(\infty\), \(j=1,2,3\), then \(f \equiv D_uf\), where \(D_uf\) is the directional derivative of \(f\) along a direction \(u\in S^{2n-j}\). The proof utilizes the \(C^n\) version of Nevanlinna's value distribution theory. Also presented is an elementary but tedious proof of the one complex variable case.

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Keywords

shared values, Mathematics(all), Nevanlinna's value distribution theory, Meromorphic functions of several complex variables, Other generalizations of function theory of one complex variable, divisor, Nevanlinna theory; growth estimates; other inequalities of several complex variables, directional derivative, Value distribution of meromorphic functions of one complex variable, Nevanlinna theory, Borel theorem

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
6
Average
Top 10%
Average
hybrid