
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.
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
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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