单位圆内代数体函数的充满圆及Borel半径

研究了单位圆内具有有限个分支点的代数体函数,并用覆盖曲面的几何方定义了他们的级和Borel半径,得到了在单位圆内大于1的有穷级代数体函数必存在充满圆及Borel半径.     

单位圆内有限级拟亚纯映射在Borel半径上的充满圆

应用覆盖曲面的几何方法,对于单位圆内有限正级的K-拟亚纯映射在其Borel半径上的性质进行了研究,用比较简单的方法证明了单位圆内有限正级K-拟亚纯映射在其Borel半径上一定存在充满圆序列,推广了Rauch A的结果.     

Borel radius and T-Radius of the algebroidal function in the unit disc

Using Ahlfors' theory of covering surface and a type-function, we confirm the existence theorem of a Borel radius and a T-radius for the algebroidal function dealing with multiple values in the unit disc, which briefly extend some results for the algebroidal functions in the complex plane.     

单位圆内K-拟亚纯映射的Borel半径

§ 1.　IntroductionForthevaluedistributionofentriefunctionsandmeromorphicfunctions,manyimportantresultshavebeenobtained [1 ].Recently ,ProfessorSUNDao_chunandProfessorYANGLo[2 ]introducedtheK_quasimermorphicmappingsintheplane,whichismorewiderthantheclassofentireormermorphicfunctions ,andstudiedtheirvaluedistribution .Inthispaper,weobtainthesequenceoffillingdisksofK_quasimermorphicmappingsintheunitdisk ,andprovetheexistenceoftheBorelradiusofK_quasiconformalmappingsintheunitdisk .Inthefoll…     

零级代数体函数的强Borel方向

该文证明了平面上满足一定条件的零级代数体函数至少存在一条强Borel方向,并且它还是通常的关于型函数的Borel方向.     

Effective Borel measurability and reducibility of functions

The investigation of computational properties of discontinuous functions is an important concern in computable analysis. One method to deal with this subject is to consider effective variants of Borel measurable functions. We introduce such a notion of Borel computability for single‐valued as well as for multi‐valued functions by a direct effectivization of the classical definition. On Baire space the finite levels of the resulting hierarchy of functions can be characterized using a notion of reducibility for functions and corresponding complete functions. We use this classification and an effective version of a Selection Theorem of Bhattacharya‐Srivastava in order to prove a generalization of the Representation Theorem of Kreitz‐Weihrauch for Borel measurable functions on computable metric spaces: such functions are Borel measurable on a certain finite level, if and only if they admit a realizer on Baire space of the same quality. This Representation Theorem enables us to introduce a realizer reducibility for functions on metric spaces and we can extend the completeness result to this reducibility. Besides being very useful by itself, this reducibility leads to a new and effective proof of the Banach‐Hausdorff‐Lebesgue Theorem which connects Borel measurable functions with the Baire functions. Hence, for certain metric spaces the class of Borel computable functions on a certain level is exactly the class of functions which can be expressed as a limit of a pointwise convergent and computable sequence of functions of the next lower level. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)     

改进的代数体函数的正规增长定理

主要讨论了涉及Borel例外小函数(亚纯函数)的代数体函数的正规增长性,通过建立的特征函数间的相互关系及亚纯函数的正规增长定理,得到了关于Borel例外小函数的代数体函数的正规增长定理,进一步改进了有关文献的结论.     

关于零级亚纯函数的Nevanlinna方向与Borel方向

本文研究了零级亚纯函数Borel方向与Nevanlinna方向的关系.应用Ahlfors覆盖曲面的几何方法,获得了部分零级亚纯函数关于型函数的.Borel方向一定是Nevanlinna方向,而这一结果至今未见有文献研究.     

关于无穷级代数体函数Borel方向的定理

本文研究了无穷级代数体函数Borel方向的判定问题.利用代数体函数的一个基本不等式,获得了一个关于无穷级代数体函数Borel方向的判定定理,将李国平关于无穷级半纯函数的聚值线判定定理推广到了无穷级代数体函数.     

代数体函数及其导数的涉及重值的Borel方向

该文研究了有限正级代数体函数涉及重值的Borel方向的存在范围, 并得到了有限正级代数体函数及其导数存在公共的涉及重值的Borel方向的判定方法.     

Infinite sequential games with perfect but incomplete information

Infinite sequential games, in which Nature chooses a Borel winning set and reveals it to one of the players, do not necessarily have a value if Nature has 3 or more choices. The value does exist if Nature has 2 choices. The value also does not necessarily exist if Nature chooses from 2 Borel payoff functions. Similarly, if Player 1 chooses the Borel winning set and does not reveal his selection to Player 2, then the game does not necessarily have a value if there are 3 or more choices; it does have a value if there are only 2 choices. If Player 1 chooses from 2 Borel payoff functions and does not reveal his choice, the game need not have a value either.     

Meromorphic functions in the unit disc that share values in an angular domain

In this paper, we investigate the uniqueness of meromorphic functions in the unit disc and consider the relation between the Borel points and shared-values of meromorphic functions in an angular domain.     

单位圆内$K-$拟亚纯映射的重值

本文研究了单位圆内的K-拟亚纯映射的重值,应用覆盖曲面的几何方法,得到了其重值的充满圆及Borel半径.     

On the Value Distribution of an Algebroid Function of Infinite Order

In this paper, we first give a fundamental inequality of algebroid functions, then using it we prove that for any x -valued algebroid functions of infinite order in the plane, there exists a sequence of filling disks and Borel direction of dealing with its multiple values, such that the number of Borel exceptional values is equal to 2ν at most.     

右半平面上Laplace-Stieltjes变换的值分布

对右半平面上τ(2<τ<+∞)级Laplace-Stieltjes变换,在一定条件下,在虚轴上必有一个涉及小函数关于型函数的Borel点;对右半平面上无穷级Laplace-Stieltjes变换,在一定条件下,在虚轴上必有一个涉及小函数的无穷级Borel点.     

Meromorphic functions of infinite order in the angular domain

We investigate the value distribution of meromorphic functions in the angular domain. In particular, we show a close relationship between radially distributed values and Borel directions of transcendental meromorphic functions of infinite order in some angular domains.     

An Exact Estimate for the Measure of the Exceptional Set in the Borel Relation for Entire Functions

We obtain an exact estimate for the measure of the exceptional set in the Borel relation for entire functions.     

单位圆内的随机亚纯函数

该文第一次研究了随机亚纯函数的增长性及Borel例外值. 得到两个十分基本且有趣的定理.     

Function Decompositions Related to the Luzin N-property

We introduce a class of continuous completely regular functions satisfying the N-property. We obtain a decomposition of an arbitrary continuous function into the sum of two functions the first of which is completely regular and the second does not enjoy the N-property. We define a class of strongly regular Borel functions for which we prove the Luzin N-property. We demonstrate that the image of every Lebesgue measurable set of a strongly regular function is measurable. From an arbitrary Borel function we extract a strongly regular function and a function that does not enjoy the N-property.