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Uniqueness of meromorphic functions sharing one value with their derivatives. (English) Zbl 1159.30324

Summary: In the paper we deal with the uniqueness problem of meromorphic functions sharing a finite value with their derivatives. The results in this paper improve those given by I. Lahiri and A. Sarkar [JIPAM, J. Inequal. Pure Appl. Math. 5, No. 1, Paper No. 20, 9 p., (2004; Zbl 1056.30030)], K. Liu and L.-Z. Yang [JIPAM, J. Inequal. Pure Appl. Math. 7, No. 3, Paper No. 93, 9 p. (2006; Zbl 1134.30324)] and others. In addition, a recent result of the first author is complemented in this paper.

MSC:

30D35 Value distribution of meromorphic functions of one complex variable, Nevanlinna theory
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