关于完全三部图K(n,n,n+4)的色唯一性

通过比较两个图的色多项式的系数(本文使用了五独立集数)、顶点集、边集、三角形和四圈的个数,证明了K(2,2,6)是色唯一图,从而部分地回答了文[5],[7]中遗留的一个问题,并得到图K(n,n,n 4)(n=2或n 4)是色唯一的.     

p-ADIC亚纯函数在截断重级下的一个定理

本文研究p-adic亚纯函数在截断重级下分担两个公共值集的唯一性问题，得到了一个相应的定理．定理的证明主要利用p-adic亚纯函数论中的两个基本定理和一个辅助函数．     

一类奇异二阶边值问题非零解的存在性

在一些特殊的条件下,当非线性项在无穷远处发生共振或双共振时,通过运用Morse理论获得了一类奇异二阶边值问题非零解的存在性结果.     

两类图的伴随多项式

本文推广已有图D_n,F_n到两类新图D_n~i,F_n~i(i≥4),并运用与色和有关的代数函数—伴随函数得到它们的伴随多项式并讨论了当i=4时的不可约性.     

完全t部图K(n1,n2…nt)的色唯一性

本文使用比较两个色等价图的色划分数的方法,得出了完全t部图的色等价图类仍为完全t部图的一般形式数值条件,进一步得出了K(n₁,n₂,n₃)和K(n₁,n₂,n₃,n₄)为色唯一图的一般形式数值条件。     

关于非线性两点边界值问题u″ g(t,u)=f(t),u(0)=u(2π)=0的解的存在性和唯一性

本文给出了ｍａｘ＿ｍｉｎ原理的一个非变分形式，证明了非线性两点边界值问题ｕ″＋ｇ（ｔ，ｕ）＝ｆ（ｔ），ｕ（０）＝ｕ（２π）＝０的解的一个存在性和唯一性定理·     

H型群上的平均值公式及唯一延拓性

本文求得了H型群上次Laplace算子的基本解,并以此为基础,给出了平均值公式、Hardy型不等式、不确定原理及唯一延拓性．     

On G-Compactifications

The semilattice of G-compactifications of a G-Tikhonov space X is studied. The question of what sets containing X and contained in the maximal G-compactification β _G X must be contained also in all other G-compactifications of X is considered. Conditions for β _G X to be the completion of the G-space X with respect to a natural uniformity (proximity) on X are obtained. Sufficient conditions for the existence of a smallest (minimal, unique) G-compactification of X are given.     

Cartesian P-property and Its Applications to the Semidefinite Linear Complementarity Problem

We introduce a Cartesian P-property for linear transformations between the space of symmetric matrices and present its applications to the semidefinite linear complementarity problem (SDLCP). With this Cartesian P-property, we show that the SDLCP has GUS-property (i.e., globally unique solvability), and the solution map of the SDLCP is locally Lipschitzian with respect to input data. Our Cartesian P-property strengthens the corresponding P-properties of Gowda and Song [15] and allows us to extend several numerical approaches for monotone SDLCPs to solve more general SDLCPs, namely SDLCPs with the Cartesian P-property. In particular, we address important theoretical issues encountered in those numerical approaches, such as issues related to the stationary points in the merit function approach, and the existence of Newton directions and boundedness of iterates in the non-interior continuation method of Chen and Tseng [6]. This work is supported by the annual grant A2004/23 of University of Southampton.     

Heisenberg群上次Laplace算子的Carleman型估计与唯一延拓性

本文在适当条件下给出了Heisenberg群上次Laplace算子的Carleman型估计, 并由此建立了唯一延拓性.