具有两个公共值集的亚纯函数的唯一性

讨论了亚纯函数具有两个公共值集的唯一性问题,改进仪洪勋的结果。     

具有两个权分担的公共值集的亚纯函数

讨论了亚纯函数分担两个集合的唯一性问题,证明了一个定理.所得结果改进了先前的一些定理,例子表明结果是精确的.     

具有两个公共值的亚纯函数

By using the idea of weighted sharing of values, the problem of uniqueness of meromorphic functions that share two values is studied. The results in this paper improve some theorems given by M.Ozawa and Yi Hongxun et al.     

具有两个IM公共值集的亚纯函数

本文讨论了亚纯函数的唯一性问题,证明了存在一个具有13个元素的集合S使得对任意两个非常数的亚纯函数f与g,只要满足E(S,f)=E(S,g)和E({∞),f)=E({∞},g),必有f≡g.     

CM分担两个公共值集的亚纯函数唯一性

证明了存在一个具有2个元素的集合S_1和一个具有5个元素的集合S_2,使得对任何两个非常数亚纯函数f与g,只要满足E(S_j,f)=E(S_j,g)(j=1,2),就有f≡g.     

具有三个公共值的亚纯函数

利用权分担值的思想，对具有三个CM公共值的非常数亚纯函数的唯一性问题进行了研究，所得结果改进了Lahird的部分结论．     

具有公共值集和亏值的亚纯函数唯一性

§ 1 .　IntroductionandtheMainResult　　Inthispaper,weshallusethestandardnotationsofvaluesdistributiontheory(see [1]) .LetfbeameromorphicfunctionandSbeasetofdistinctelements.SetEf(S) =∪a∈S{z:f =a ,countingmultiplicities} .Recently,manygoodresultswereobtained(see [1— 4]) ,whichansweredthequestionofGross(see [5 ]) .TheoremA(see [3])　LetS1 ={ 0 } ,S2 ={z :z2 (z+a) -b =0 } ,wherea,baretwononzeroconstantssuchthatthealgebraicequationz2 (z+a) -b=0hasnomultipleroots.Iff ,garetwoentirefunctio…     

导数具有公共值点集的亚纯函数

In this paper,we concerned with the problem of the unicity of meromorphic functions and its derivatives covering certain finite sets at the same points and obtain some results that are extensions of that of K.Tohge and Yi Hongxun etc.,     

关于亚纯函数据有三个公共值以及它们的导函数据有一个公共值的问题

这篇论文研究的是亚纯函数的唯一性。这篇论文的主要结论是：如果两个非常数亚纯函数ｆ和ｇ有三个ＣＭ公共值或四个ＩＭ公共值,并且ｆ’和ｇ’以零为ＩＭ公共值,则ｆ和ｇｒＭｏｂｉｕｓ变换。其中一个结论是Ｋ．Ｔｏｈｇｅ有一个结果的改进,而且我们采用了与Ｋ．Ｔｏｈｇｅ不同的方法。『     

具三个公共值的亚纯函数的唯一性

主要讨论了具有三个公共值的亚纯函数的唯一性问题，推广了仪洪勋、叶寿桢与邱淦Ｄｉ等人的有关结果。     

On a question of Gross

Using the notion of weighted sharing of sets we prove two uniqueness theorems which improve the results proved by Fang and Qiu [H. Qiu, M. Fang, A unicity theorem for meromorphic functions, Bull. Malaysian Math. Sci. Soc. 25 (2002) 31-38], Lahiri and Banerjee [I. Lahiri, A. Banerjee, Uniqueness of meromorphic functions with deficient poles, Kyungpook Math. J. 44 (2004) 575-584] and Yi and Lin [H.X. Yi, W.C. Lin, Uniqueness theorems concerning a question of Gross, Proc. Japan Acad. Ser. A 80 (2004) 136-140] and thus provide an answer to the question of Gross [F. Gross, Factorization of meromorphic functions and some open problems, in: Proc. Conf. Univ. Kentucky, Lexington, KY, 1976, in: Lecture Notes in Math., vol. 599, Springer, Berlin, 1977, pp. 51-69], under a weaker hypothesis.     

On the uniqueness of meromorphic functions that share four values in one angular domain

The main purpose of this paper is to investigate the uniqueness of transcendental meromorphic functions that share four values in one angular domain which is an unbounded subset of the whole complex plane. From one of our main results, a question of J.H. Zheng [J.H. Zheng, On uniqueness of meromorphic functions with shared values in one angular domain, Complex Var. Elliptic Equ. 48 (9) (2003) 777-785] is completely answered. Furthermore, we give an example to explain the necessity of the condition

     

Uniqueness of meromorphic functions whose derivatives share four small functions

In this paper, we will prove some uniqueness theorems of meromorphic functions whose derivatives share four distinct small functions. The results in this paper improve those given by R. Nevanlinna, L. Yang, G.D. Qiu, and other authors. An example is provided to show that the results in this paper are best possible.     

多个亚纯函数的分担值与唯一性

本文研究了多个亚纯函数的分担值与唯一性问题,得到了一般情况下相应的唯一性定理。     

一类线性差分方程的亚纯解与一个亚纯函数分担3个值的唯一性

主要研究差分方程a_1(z)f(x+1)+a_0(z)f(z)=F(z)的一个有穷级超越亚纯解f(z)与亚纯函数g(z)分担0,1,∞CM时的唯一性问题(其中a_(z),a0(z),F(z)为非零多项式,且满足a_1(z)+a_0(z)■0),得到f(x)≡g(z),或f(z)+g(z)≡f(z)g(z),或存在一个多项式β(z)=az+b_0和一个常数a_0满足e~(a_0)≠e~(b_0),使得f(z)=(1-e~(β(x)))/(e~(β(x))(e~(a_o-b_0)-1))与g(z)=(1-e~(β(x)))/(1-e~(b_o-a_0)),其中a(≠0),b_0为常数.     

分担三个公共值的亚纯函数

主要讨论两个亚纯函数分担三个公共值时的唯一性问题，所得结果改进了仪洪勋、邱淦佛等的相应定理．     

Weighted sharing three values and Brosch's theorem

This paper studies the idea of weighted sharing and proves two main theorems which generalize some results given by G. Brosch, Q. Zhang and other authors.     

Uniqueness Theorems for Meromorphic Functions That Share Three Sets

In this article, we deal with the problem of uniqueness of meromorphic functions that share three sets, and obtain one set S with 5 elements such that any two nonconstant meromorphic functions ? and g satisfying E(S, ?) = E(S, g), E({0}, ?) = E({0}, g) and E({∞}, ?) = E({∞}, g) must be identical.     

具有四个分担值的亚纯函数的唯一性

对给定的复数a,本文引入一个用来刻画两个亚纯函数的重数相同的公共a值点的比重的量τk,并把有关这一量与拟亏量或者权分担相结合的条件附加到两个具有四个分担值的亚纯函数上,得到了两个关于亚纯函数唯一性的定理.     

具有两个满亏量的亚纯函数的唯一性

本文研究了具有两个满亏量的亚纯函数的唯一性问题，推广并改进了文［１～６］的一些结果。