ZEROS AND FIXED POINTS OF DIFFERENCE OPERATORS OF MEROMORPHIC FUNCTIONS

Let f be a transcendental meromorphic function and △f（z） = f（z ＋ 1） -- f（z） A number of results are proved concerning the existences of zeros and fixed points of Af（z） and △f（z）/f（z） when f（z） is of order σ（f）=1. Examples show that some of the results are sharp.

T-AND HAYMAN T-POINTS OF MEROMORPHIC FUNCTIONS FOR SMALL FUNCTIONS IN THE UNIT DISK

In this article, we consider the singular points of meromorphic functions in the unit disk. We prove the second fundamental theorem for the Ahlfors-Shimizu＇s characteristic in the unit disk in terms of Nevanlinna theory in the angular domains, and obtain the existence of T-points and Hayman T-points dealing with small functions as target.

Normality Criteria of Meromorphic Functions Concerning Shared Fixed-points

In this paper, we study the normality criteria of meromorphic functions concerning shared fixed-points, we obtain: Let F be a family of meromorphic functions defined in a domain D. Let n, k ≥ 2 be two positive integers. For every f ∈ F, all of whose zeros have multiplicity at least (nk+2)/(n-1). If f(f(k))nand g(g(k))nshare z in D for each pair of functions f and g, then F is normal.

The T Point of Meromorphic Functions in the Unit Disk

In this paper, the T points of meromorphic functions are defined and existence of the T points is showed in the Unit disk, we also prove T point must be J point.

Generalization of Uniqueness of Meromorphic Functions Sharing Fixed Point

In this paper, we study the uniqueness problems of entire and meromorphic functions concerning differential polynomials sharing fixed point and obtain some results which generalize the results due to Subhas S. Bhoosnurmath and Veena L. Pujari [1].

ON FIXED POINTS OF MEROMORPHIC FUNCTIONS f(z) AND f(z+c),△_cf(z)

Let c be a nonzero constant and f(z) be a transcendental meromorphic function of finite order. Under some conditions, we study the relationships between the exponent of convergence of fixed points of f(z), its shift f(z +c) and forward differences △c^n f(z), n ∈ N^+.

Further Results of Meromorphic Functions that Share a Polynomial

In this paper,we use the theory of value distribution and study the uniqueness of meromorphic functions.We will prove the following result:Let f(z)and g(z)be two transcendental meromorphic functions,p(z)a polynomial of degree k,n≥max{11,k+1}a positive integer.If fn(z)f(z)and gn(z)g(z)share p(z)CM,then either f(z)=c1ec p(z)dz, g(z)=c2e ?c p(z)dz ,where c1,c2 and c are three constants satisfying(c1c2) n+1 c2=-1 or f(z)≡tg(z)for a constant t such that tn+1=1.

Generalization of Uniqueness Theorems for Entire and Meromorphic Functions

In this paper, we deal with the uniqueness problems on entire and meromorphic functions con- cerning differential polynomials that share fixed-points. Moreover, we generalise and improve some results of Weichuan Lin, Hongxun Yi, Meng Chao, C. Y. Fang, M. L. Fang and Junfeng xu.

Fixed Points of Meromorphic Functions and of Their Differences,Divided Differences and Shifts

Let f（z） be a finite order meromorphic function and let c ∈ C ／ {0} be a constant. If f（z） has a Borel exceptional value α∈ C, it is proved that max{τ（f（z） ）, τ（ △cf（z） ） } = max{τ（f（z） ）, τ（f（z ＋ c））} = max{T（ τ（△cf（z） ）, τ（f（z ＋ c））} = σ（f（z） ）. If f（z） has a Borel exceptional value b ∈ （C ／ {0}） ∪ {∞}, it is proved that max{τ（f（z））,τ（△cf（z）/f（z）}=max（τ（△cf（z）/f（z））,τ（f（z＋c））}=σ（f（z））unless f（z） takes a special form. Here T（g（z）） denotes the exponent of convergence of fixed points of the meromorphic function g（z）, and a（g（z）） denotes the order of growth of g（z）.

On fixed-points and singular values of transcendental meromorphic functions

In this paper we make a further discussion of a relationship between the number of fixed-points and distribution of singular values along the round annuli centered at the origin of a transcendental meromorphic function. To attain our purpose we first establish a fundamental inequality for the modulus of derivative of a holomorphic covering mapping whose image is an annulus by virtue of the hyperbolic metric. The inequality is of independent significance. We make a simple survey on some domain constants for hyperbolic domains.

ASYMPTOTIC EXPANSION OF DIRAC-TYPE DISTRIBUTION ASSOCIATED WITH A CLASS OF HYPERSURFACES WITH DEGENERATED CRITICAL POINTS

In order to generalize Hadamard's theory of fundamental solutions to the case of degenerate holomorphic PDE, this paper studies the asymptotic expansion of Dirac-type distribution associated with a class of hypersurfaces F(x) with degenerate critical points and proves that [F(x)](+)(lambda) is a distribution-valued meromorphic of lambda is an element of C under some assumptions on F(x). Next, the authors use the Normal form theory of Arnold and prove that for a hypersurface F(x) = 0 with A(mu) type degenerate critical point at x = 0, F-+(lambda) is a distribution-valued meromorphic function of lambda.

On the Growth and Fixed Points of Solutions of Second Order Differential Equations with Meromorphic Coefficients

In this paper, we investigate the growth and fixed points of solutions and their 1st, 2nd derivatives, differential polynomial of second order linear differential equations with meromorphic coefficients, and obtain that the exponents of convergence of these fixed points are all equal to the order of growth.

单位圆盘内一类亚纯代数体函数的最大型聚值点

孙道椿证明了单位圆内一类零级亚纯函数的最大型聚值点存在性定理，本文将这一结果在一定程度上推广到了亚纯代数体函数．

涉及复合亚纯函数和不动点的亚纯函数的正规族（英文）

假设f是一个超越整函数,G是定义在区域D■C上的全纯函数族.如果对G中每个元素g,f(g)-α1在区域D上的每个零点重数≥2,f(g)-α2和g-α2在区域D上IM分担0,这里α1和α2是2个判别的有穷复数,则G在区域D上是正规的,该结果推广了Bergweiler 2004年的一个结果.同时还证明了:假设R是一个次数满足deg R≥2(deg R≥3,并且R在在复平面上有3个判别的有限的不动点)的有理函数,F是一个定义在区域D■C上的全纯函数(亚纯函数),并且对F中每个元素f,Rf(z)-z和f(z)-z在区域D上IM分担0,则F是区域D上的正规族,该结果推广了方明亮与袁文俊2000年的一个结果,也推广了常建明、方明亮与L.Zalcman 2005年的一个结果,并举例说明本文结果从某种意义上来讲是最佳的.

与分担值相关的正规族

设F为区域D上的亚纯函数族,a和b都是不为零的两个有穷复数(a/b不是正整数),若每个f∈F,f(z)=a(?)f^((k))(z)=a,且f-a的零点重级至少为k,当f^((k))(z)=b时有|f(z)-a|≥ε,其中ε为正数.则F在区域D内正规.

关于单位圆内亚纯函数的奇异点

定义了单位圆内亚纯函数的T点,证明了在满足limr→1T(r,f)lg(1/(1-r))=∞的条件下至少存在一个T点,同时得到了单位圆内有限正级亚纯函数关于小函数的T点.

关于圆内亚纯函数的特征函数

该文对圆内亚纯函数建立了用T（r，f＇）来界囿T（r，f）的不等式，并把所得的结果用于研究无穷级亚纯函数与其微分多项式的公共Borel点问题．

关于f^((k))-af^n的值分布

设f(z)为平面内超越亚纯函数,a≠0为常数,考虑当n≥k+3时,函数f(k)-afn的值分布问题.

关于f′f^n值分布的一个定理

设f(z)是超越亚纯函数,n是正整数,该文研究了f'f″的值分布,推广了Hayman和仪洪勋的有关定理.

单位圆内的充满圆序列

本文定义了单位圆内无穷级亚纯函数的充满圆序列。然后证明了它在Borcl点附近的存在性。