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Value distribution of meromorphic functions concerning differential polynomial. (English) Zbl 1185.30032
Summary: We study the value distribution of meromorphic functions concerning differential polynomials. Moreover, some criteria for normality of families of meromorphic functions are obtained, which extend results respectively established by H. Chen and Y.-X. Gu [Sci. China, Ser. A 36, 674–681 (1993; Zbl 0777.30018)] and X. C. Pang and L. Zalcman [New Z. J. Math. 28, 71–75 (1999; Zbl 0974.30025)].

MSC:
30D35 Value distribution of meromorphic functions of one complex variable, Nevanlinna theory
30D45 Normal functions of one complex variable, normal families
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