正余弦数列及其子列的敛散性

利用数列{sinn}与{cosn}在区间[-1,1]上的稠密性,及三函数的构造法证明了一些重要的结果,并在这些结果的基础上,对{sin an}k,sin ank{+b}与cos(ank{+b)}的发散性进行了证明.为完全解决{sin pk(n)}与cos pk{(n)}的敛散性提供了许多创新性的思路和方法,也为更加透彻分析{sinn}与{cosn}的分布规律奠定了基础.     

一类二阶耦合积分边值问题的可解性

在一对上-下解和下-上解存在的条件下,研究了一类二阶耦合积分边值问题{-x"=f_1(t,x,y,x"),-y"=f_2(t,x,y,y'),t∈[0,1],x(0)=y(0)=0,x(1)+∫_0~1y(t)dA(t)=0,y(1)+∫_0~1x(t)dB(t)=0}解的存在性,其中f_1,f_2∈C([0,1]×R~3,R).     

一类非线性分数阶薛定谔-泊松系统非零解的存在性

本文研究了分数阶薛定谔-泊松系统$$\left\{\begin{array}{l}(-\Delta)^su+u+\phi u=\lambda f(u)\ \text {in} \ \mathbb {R}^3, \\ (-\Delta)^{\alpha}\phi =u^2\ \text {in} \ \mathbb {R}^3\emph{},\end{array}\right. $$ 非零解的存在性, 其中$s\in (\frac{3}{4},1), \alpha\in(0,1),\lambda$ 是正参数, $(-\Delta)^s,(-\Delta)^{\alpha}$是分数阶拉普拉斯算子. 在一定的假设条件下, 利用扰动法和Morse迭代法, 得到了系统至少一个非平凡解.     

一般多元线性问题的指数收敛易处理性

正1引言用N表示正整数集.设{H_d}和{G_d}是两个Hilbert空间列.对于每个d∈N,一个映射S_d:H_d→G_d就被称为一个解算子.一个多元问题是指求解一个算子序列S={S_d}_(d∈N).如果S={S_d}_(d∈N)是由线性映射组成的,则称S为多元线性问题.我们通常用有限个信息算子构造算法来求解问题(逼近解算子),其中一个信息算子是指一个连续线性泛函.为求     

关于紧致广义凯莱流形上的希格斯场的一些注记

在本文中,我们首先解决在紧致广义凯莱流形上的$I_{+-}$-希格斯丛上的阿尔法-厄米特-杨-米尔斯-希格斯方程的狄利克雷边值问题.然后我们证明了在闭的广义凯莱流形上的$I_{+-}$-希格斯丛,它的阿尔法半稳定性蕴含了渐进$\alpha$-厄米特-杨-米尔斯-希格斯结构的存在性.     

拓扑向量空间中的广义向量F-隐补问题

该文在拓扑向量空间中引入了一类新的向量F-隐补问题(简记为:(GVF-ICP))和两类(强和弱)向量F-隐变分不等式问题(分别简记为:(GVF-IVI)_1和(GVF-IVI)_2).在齐性条件下得到了(GVF-ICP)与(GVF-IVI)_1的等价关系,同时在适当假设下利用KKM定理得到了(GVF-IVI)_2的新的解的存在性定理.     

非线性椭圆障碍问题很弱解的全局可积性

本文研究一类非线性椭圆方程的K_(ψ,θ)~r(Ω)-障碍问题很弱解u的全局可积性,其中u的可积指数r满足max{1,p-1}r p n.令θ_*=max{θ,ψ},若θ_*∈W~(1,q)(Ω),q r,则上述问题的很弱解u具有全局可积性,这里r充分接近p.     

带Neumann 边界条件的$p(x)$-Kirchhoff 型椭圆系统的研究

本文研究一类带Neumann 边界条件的~$p(x)$-Kirchhoff 型系统解的存在性. 借助于Ekeland变分原理和变指数Sobolev空间理论, 我们给出使得该问题存在解的合适条件.由于Poincar\'{e} 不等式在$W^{1,p(x)}(\Omega)$ 中不再成立, 我们将在$W^{1,p(x)}(\Omega)$ 的某个子空间中证明Poincar\'{e}-Wirtinger 不等式.     

具奇异系数的反应扩散方程组Cauchy问题

该文讨论如下具有奇异系数的反应扩散方程组Cauchy问题非负局部解的存在性和不存 在性, 以及解在有限时间内的爆破问题(u_t-t^{-1}Δ u=α_1u^{q_1}+β_1v^\{p_1}+f_1(x),t>0,x∈R^N； v_t-t^\{-1}Δ v=α_2u^\{q_2}+β_2v^{p_2}+f_2(x),t>0,x∈R^ N；lim_{t→0+}u(t,x)=lim_{t→0+}v(t,x)=0,x∈R^N. 其中p_i>1, q_i>1 (i=1, 2) , α_1≥0, α_2>0, β_1>0, β_2≥0, f_ i(x) (i=1, 2)为连续非负有界函数, (f_1(x), f_2(x))(0, 0) . 文章给出了非负局部解存在的显式条件和非负局部解不存在的比较结果, 也得到解在有限时间爆破的一些结果.     

全抛物型吸引-排斥趋化流体系统解的全局存在性

本文研究一类摩擦力驱动下的全抛物型吸引-排斥趋化流体系统的Cauchy问题.当初始数据满足适当的正则性条件时,通过引入相应的自由能泛函,在排斥占优或平衡或吸引占优且初值质量(χ1-χ2)∫_R2n₀(x)dx≤8π的情形下,证明全抛物型吸引-排斥趋化流体系统经典解的全局存在性.     

On implicit vector equilibrium problems

In this paper, we introduce and study a class of implicit vector equilibrium problems, which includes a number of (scalar) implicit equilibrium problems, implicit variational inequalities, and implicit complementarity problems as special cases. By using KKM-Fan theorem, we prove some new existence theorems of solutions for this kind of implicit vector equilibrium problems in Hausdorff topological vector spaces. Our results extend and unify some corresponding results of several authors.     

Collective fixed points, generalized games and systems of generalized quasi-variational inclusion problems in topological spaces

In this paper, by using a fixed point theorem for expansive set-valued mappings with noncompact and nonconvex domains and ranges in topological spaces due to the author, we first prove a collective fixed point theorem and an existence theorem of equilibrium points for a generalized game. As applications, some new existence theorems of solutions for systems of generalized quasi-variational inclusion problems are established in noncompact topological spaces. Our results are different from known results in the literature.     

非紧L-凸空间中新的Ky Fan匹配定理及其对一般拟平衡问题组的应用

In this paper, a new Ky Fan matching theorem is established in noncompact L-convex spaces. As applications, a fixed point theorem and equilibrium existence theorems for systems of general quasiequilibrium problems and systems of quasiequilibrium problems in noncompact L-convex spaces are obtained.     

System of Generalized Vector Quasi-Equilibrium Problems in Locally FC-Spaces

A new class of locally finite continuous topological spaces （for short, locally FC-spaces） and a class of system of generalized vector quasi-equilibrium problems are introduced. By applying a generalized Himmelberg type fixed point theorem for a set-valued mapping with KKM-property due to the author, a collectively fixed point and an equilibrium existence theorem of generalized game are first proved in locally FC-spaces. By applying our equilibrium existence theorem of generalized game, some new existence theorems of equilibrium points for the system of generalized vector quasi-equilibrium problems are proved in locally FC-spaces. These theorems improve, unify and generalize many known results in the literatures.     

G -凸空间中的广义对策和广义矢量拟平衡问题组

该文在广义G -凸空间中引入并研究了一类新的广义矢量拟平衡问题组(SGVQEP).利用作者的一族集值映象的极大元存在定理,证明了广义对策的一个新的平衡存在定理.作为应用,在非紧乘积G -凸空间中证明了SGVQEP解的一些新的存在定理.     

Split equilibrium problems for related games and applications to economic theory

ABSTRACT

In this paper we introduce the concept of split Nash equilibrium problems associated with two related noncooperative strategic games. Then we apply the Fan-KKM theorem to prove the existence of solutions to split Nash equilibrium problems of related noncooperative strategic games, in which the strategy sets of the players are nonempty closed and convex subsets in Banach spaces. As an application of this existence to economics, an example is provided that studies the existence of split Nash equilibrium of utilities of two related economies. As applications, we study the existence of split Nash equilibrium in the dual (playing twice) extended Bertrand duopoly model of price competition.     

An existence result for generalized vector equilibrium problems without pseudomonotonicity

In this work, we introduce and study a class of generalized vector equilibrium problems for multifunctions which includes a number of generalized vector variational inequality problems and generalized vector variational-like inequality problems as special cases. By using the KKM–Fan theorem and Nadler’s result, we prove an existence theorem for solutions for this class of generalized vector equilibrium problems in Banach spaces. Applications to generalized vector variational-like inequalities are given.     

Solutions of system of generalized vector quasi-equilibrium problems in locally G-convex uniform spaces

In this paper we establish a collectively fixed point theorem and an equilibrium existence theorem for generalized games in product locally G-convex uniform spaces. As applications, some new existence theorems of solutions for the system of generalized vector quasi-equilibrium problems are derived in product locally G-convex uniform spaces. These theorems are new and generalize some known results in the literature.     

Banach空间二阶积-微分方程组初值问题

该文利用新的比较结果研究Banach空间二阶积一微分方程组初值问题解的存在性．即使在有限维空间，其结果也是新的．     

Banach 空间二阶积-微分方程组初值问题

该文利用新的比较结果研究Banach 空间二阶积-微分方程组初值问题解的存在性.即使在有限维空间, 其结果也是新的.