塌陷型极值拟共形映射的性质

证明了如果f~μ是单位圆△上塌陷型极值拟共形映射,则存在与f~μ等价的极值拟共形映射f~(?)以及单位圆的子区域G,使得面(z)=0,(?)z∈G.     

拟共形映射与调和函数

本文利用调和函数的Ｄｉｒｉｃｈｌｅｔ积分来估计具有给定边界值的拟共形映射的极值伸缩商,回答Ｄ．Ｐａｒｔｙｋａ关于拟对称函数谱值和特征值的一个问题。     

拟亚纯映射的角域重值不等式及应用

建立了平面上K-拟亚纯映射的角域重值不等式,证明了ρ(0≤ρ≤+∞)级K-拟亚纯映射存在与重值有关的强Borel方向.     

Riemann曲面之间的极值拟共形映射

设Ｓ和Ｒ是两个以单位圆为万有覆盖的Ｒｉｅｍａｎｎ曲面,ｆ：Ｓ→Ｒ为拟共形同胚,类似于ＫＳｔｒｅｂｅｌ的方法。我们引ｉｅｍａｎｎ嗣面Ｓ上的点ｐ０关于模边同伦类「ｆ０」的可变性集合Ｖ「ｆ０」「ｐ０」的概念并且证明可变性集合是Ｒ的一个紧的连通子集。     

拟共形映射的偏差定理

本文得到了一个空间拟共形映射的偏差定理,这一结果是F.W.Gehring的平面偏差定理的空间拓广。     

模和拟共形映射

研究了模和拟共形映射，得到了一个同胚为拟共形映射的几个条件．     

关于拟亚纯映射的值分布

对于平面上的K-拟亚纯映射，应用覆盖曲面的几何方法，得到了其涉及重值的充满圆、Borel方向和正规定则．     

奇异值、拟共形映射和Schottky上界

获得了Ramanujan模方程奇异值的若干性质 (包括渐近精确的界 ) ,并由此得出了Hersch Pflugerφ-偏差函数和Agardη-偏差函数的无穷乘积表示 ,改进了显式拟共形Schwarz引理 ,获得了Schottky上界新型的渐近精确的估计 ,证实了关于线性偏差函数的一个猜测     

具有可积伸张同胚的Liouville定理

研究了具有可积伸张的同胚，在一定条件下得到了这类同胚的Liouville定理．     

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.     

具有边际贡献权重的位置值

先通过交流局势中交流结构的边邻接关系,确定了边邻接交流局势。再利用边邻接交流局势的Myerson值,以及边的端点的边际联盟贡献比例,定义了具有边际贡献权重的位置值。并利用分支有效性和边均衡贡献性,在一类交流局势下刻画了具有边际贡献权重的位置值。     

A modified quasi-boundary value method for ill-posed problems

In this paper, we study a final value problem for first order abstract differential equation with positive self-adjoint unbounded operator coefficient. This problem is ill-posed. Perturbing the final condition we obtain an approximate nonlocal problem depending on a small parameter. We show that the approximate problems are well posed and that their solutions converge if and only if the original problem has a classical solution. We also obtain estimates of the solutions of the approximate problems and a convergence result of these solutions. Finally, we give explicit convergence rates.     

Sensitivity analysis for the generalized singular value decomposition

In this paper, we discuss the sensitivity of multiple nonzero finite generalized singular values and the corresponding generalized singular matrix set of a real matrix pair analytically dependent on several parameters. From our results, the partial derivatives of multiple nonzero singular values and their left and right singular vector matrices are obtained.Copyright © 2012 John Wiley & Sons, Ltd.     

ON THE SHARING VALUES OF ALGEBROID FUNCTIONS AND THEIR DERIVATIVES

In this paper,we define the shared value of an algebroid function and its derivative on its Riemann surface.By considering the relationship between the shared values and the branch points of algebroid functions and their derivatives,we obtain some uniqueness theorems of algebroid functions sharing values with their derivatives,which extend 3 IM shared values theorem of nonconstant meromorphic functions and their derivatives obtained by Mues-Steinmetz and Gundersen.     

The Dirichlet boundary value problems for p-Schrödinger operators on finite networks

In this paper, we define the discrete p-Schrödinger operators on finite networks and discuss the existence of the Dirichlet eigenvalues and their eigenfunctions for the operators. We also provide various equivalent conditions for the existence of positive solutions for Dirichlet boundary value problems for the operators.     

导数分担三个值的亚纯函数的唯一性

主要讨论两个亚纯函数的k阶导数分担三个值时的唯一性问题,并得到一个有趣的结果.     

与其导数具有分担值的亚纯函数唯一性

为进一步丰富亚纯函数唯一性理论,寻求更佳的唯一性条件,利用亚纯函数Nevanlinna理论更精确地估计亚纯函数的n重值点的计数函数,得到两个亚纯函数与其导数具有某些分担值时的唯一性定理,推广和改进了相关文献的相关结果.     

一个微分方程的解及其应用

本文利用Gundersen的方法研究了一个线性微分方程的解并证明此方程的每一个整函数解的级必为无穷,推广了Gundersen和杨连中的若干结果。作为应用,我们还研究了与导数具有公共不动点的整函数.     

圆环中的亚纯函数及其导数在重值条件下的一个唯一性定理

In this paper, we first obtain the famous Xiong Inequality of meromorphic functions on annuli. Next we get a uniqueness theorem of meromorphic function on annuli concerning to their multiple values and derivatives by using the inequality.     

Asymptotics on Two-dimensional Recursion Sequences

In this paper, we give precise formulas for the general two-dimensional recursion sequences by generating function method, and make use of the multivariate generating functions asymptotic estimation technique to compute their asymptotic values.