• Title/Summary/Keyword: Uniqueness

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Uniqueness of Meromorphic Functions That Share Three Sets

  • Banerjee, Abhijit
    • Kyungpook Mathematical Journal
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    • v.49 no.1
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    • pp.15-29
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    • 2009
  • Dealing with a question of gross, we prove some uniqueness theorems concerning meromorphic functions with the notion of weighted sharing of sets. Our results will not only improve and supplement respectively two results of Lahiri-Banerjee [9] and Qiu and Fang [13] but also improve a very recent result of the present author [1].

UNIQUENESS OF CERTAIN TYPES OF DIFFERENCE POLYNOMIALS

  • MENG, CHAO;ZHAO, LIANG
    • Journal of applied mathematics & informatics
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    • v.36 no.5_6
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    • pp.447-458
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    • 2018
  • In this paper, we investigate the uniqueness problems of certain types of difference polynomials sharing a small function. The results of the paper improve and generalize the recent results due to H.P. Waghamore [Tbilisi Math. J. 11(2018), 1-13], P. Sahoo and B. Saha [App. Math. E-Notes. 16(2016), 33-44].

ON THE MULTIPLE VALUES AND UNIQUENESS OF MEROMORPHIC FUNCTIONS SHARING SMALL FUNCTIONS AS TARGETS

  • Cao, Ting-Bin;Yi, Hong-Xun
    • Bulletin of the Korean Mathematical Society
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    • v.44 no.4
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    • pp.631-640
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    • 2007
  • The purpose of this article is to deal with the multiple values and uniqueness of meromorphic functions with small functions in the whole complex plane. We obtain a more general theorem which improves and extends strongly the results of R. Nevanlinna, Li-Qiao, Yao, Yi, and Thai-Tan.

UNIQUENESS OF ENTIRE FUNCTIONS AND DIFFERENTIAL POLYNOMIALS

  • Xu, Junfeng;Yi, Hongxun
    • Bulletin of the Korean Mathematical Society
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    • v.44 no.4
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    • pp.623-629
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    • 2007
  • In this paper, we study the uniqueness of entire functions and prove the following result: Let f and g be two nonconstant entire functions, n, m be positive integers. If $f^n(f^m-1)f#\;and\;g^n(g^m-1)g#$ share 1 IM and n>4m+11, then $f{\equiv}g$. The result improves the result of Fang-Fang.

Uniqueness and Value-sharing of Entire Functions

  • Li, Xiaojuan;Meng, Chao
    • Kyungpook Mathematical Journal
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    • v.49 no.4
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    • pp.675-682
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    • 2009
  • In this paper, we study the uniqueness problems on entire functions sharing one value. We improve and generalize some previous results of Zhang and Lin [11]. On the one hand, we consider the case for some more general differential polynomials $[f^nP(f)]^{(k)}$ where $P({\omega})$ is a polynomial; on the other hand, we relax the nature of sharing value from CM to IM.