角域内亚纯函数的唯一性定理

该文研究了复平面上的亚纯函数在角域内分担两个集合的唯一性,将仪洪勋和林伟川最近得到的复平面上的亚纯函数在全平面上分担两个集合的唯一性定理中的在全平面上分担两个集合的条件改成在角域内分担两个集合,得到了几个唯一性定理.     

亚纯函数涉及小函数的奇异方向

本文研究了平面上亚纯函数的奇异方向.利用角域内Ahlfors-Shimize特征函数和几个已有的关于函数增长性估计的引理,证明了复平面上的零级超越亚纯函数存在一条涉及小函数的T方向.推广了吴昭君和孙道椿给出的结果.     

关于无穷级亚纯函数

用角域内的Nevanlinna理论与型函数,研究了无穷级亚纯函数的值分布,得到了无穷级亚纯函数存在涉及小函数的精确级Borel方向与Hayman方向,同时证明了无穷级亚纯函数存在涉及小函数的T方向与Hayman-T方向.所得结果使现有无穷级的结果为推论.     

单位圆内亚纯函数在角域内分担公共小函数的唯一性

本文证明了单位圆内两个允许的亚纯函数若在某角域内分担五个CM公共小函数或五个IM公共值,则它们必恒等.     

Borel方向与亚纯函数的唯一性

设f是复平面上的亚纯函数,arg z=θ(0≤θ＜2π)是f的一条Borel方向.如果亚纯函数g和f在包含arg z=θ的角域内IM分担五个不同的值ai∈(C)(i=1,2,3,4,5),则f≡g.     

关于亚纯函数的Nevanlinna方向与Borel方向

<正> §1.主要结果 本文给出了一个判定角域内亚纯函数具有Nevanlinna方向的充要条件: 定理 设△(φ)(0≤φ<2π)为原点发出的一条半线,w=w(z)为角域Ω(φ-ε′,φ+ε′)(ε>0)上的亚纯函数,若对任意正数ε<ε′,有     

Borel方向与涉及重值的亚纯函数的唯一性

利用角域Nevanlinna特征函数和亚纯函数的辐角分布理论研究了亚纯函数的角域唯一性问题,获得了一些涉及重值的角域唯一性的结果,该角域包含亚纯函数的一条Borel方向.     

单位圆内拟亚纯映射的Borel点

研究了单位圆内的拟亚纯映射,建立了角域内的基本不等式,从而证明了拟亚纯映射的Borel点的存在性。     

角域内的K-拟亚纯映射的基本不等式及其应用

本文建立了角域内的K-拟亚纯映射的一个基本不等式,并应用它证实了K-拟亚纯映射的Nevanlinna方向与T方向的存在性．     

单位圆内拟亚纯映射的最大型Borel点的存在性及其性质

该文先证明了单位圆内K-拟亚纯映射关于角域内的一个基本不等式,并应用此不等式讨论了单位圆内有穷级K-拟亚纯映射的最大型Borel点的存在及其性质.     

RECENT PROGRESS ON SPHERICAL HARMONIC APPROXIMATION MADE BY BNU RESEARCH GROUP ——In memory of Professor Sun Yongsheng

As early as in 1990, Professor Sun Yongsheng, suggested his students at Beijing Normal University to consider research problems on the unit sphere. Under his guidance and encouragement his students started the research on spherical harmonic analysis and approximation. In this paper, we incompletely introduce the main achievements in this area obtained by our group and relative researchers during recent 5 years （2001-2005）. The main topics are： convergence of Cesaro summability, a.e. and strong summability of Fourier-Laplace series; smoothness and K-functionals; Kolmogorov and linear widths.     

A REPRESENTATION FORMULA RELATED TO SCHR(O)DINGER OPERATORS

Schr(o)dinger operator is a central subject in the mathematical study of quantum mechanics.Consider the Schrodinger operator H = -△ V on R, where △ = d2/dx2 and the potential function V is real valued. In Fourier analysis, it is well-known that a square integrable function admits an expansion with exponentials as eigenfunctions of -△. A natural conjecture is that an L2 function admits a similar expansion in terms of "eigenfunctions" of H, a perturbation of the Laplacian (see [7], Ch. Ⅺ and the notes), under certain condition on V.     

Boundedness for commutators of multipliers on Hardy type spaces

In this paper, we study the commutators generalized by multipliers and a BMO function. Under some assumptions, we establish its boundedness properties from certain atomic Hardy space Hb^p（R^n） into the Lebesgue space L^p with p 〈 1.     

A unified approach to certain problems of best local approximation

In this paper we study best local quasi-rational approximation and best local approximation from finite dimensional subspaces of vectorial functions of several variables. Our approach extends and unifies several problems concerning best local multi-point approximation in different norms.     

THE 8~(th) INTERNATIONAL CONGRESS ON INDUSTRIAL AND APPLIED MATHEMATICS

<正>August 10-14,2015Beijing,ChinaThe International Congress on Industrial and Applied Mathematics(ICIAM)is the premier international congress in the field of applied mathematics held every four years under the auspices of the International Council for Industrial and Applied Mathematics.From August 10 to 14,2015,mathematicians,scientists     

Towards Excellence in Science Chinese Academy of Sciences

<正>May 26,2014,Beijing Science is a human enterprise in the pursuit of knowledge.The scientific revolution that occurred in the 17th Century initiated the advances of modern science.The scientific knowledge system created by     

CONTENTS OF VOLUME 30

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Instructions for contributions

正Applied Mathematics-A Journal of Chinese Universities,Series B(Appl.Math.J.Chinese Univ.,Ser.B)is a comprehensive applied mathematics journal jointly sponsored by Zhejiang University,China Society for Industrial and Applied Mathematics,and Springer-Verlag.It is a quarterly journal with