EKELAND'S PRINCIPLE FOR SET-VALUED VECTOR EQUILIBRIUM PROBLEMS

In this paper, we introduce a concept of quasi C-lower semicontinuity for setvalued mapping and provide a vector version of Ekeland＇s theorem related to set-valued vector equilibrium problems. As applications, we derive an existence theorem of weakly efficient solution for set-valued vector equilibrium problems without the assumption of convexity of the constraint set and the assumptions of convexity and monotonicity of the set-valued mapping. We also obtain an existence theorem of ε-approximate solution for set-valued vector equilibrium problems without the assumptions of compactness and convexity of the constraint set.

Upper and Lower Semicontinuity of Solution Sets for Parametric Generalized Vector Quasi-equilibrium Problems

In this paper, two kinds of parametric generalized vector quasi-equilibrium problems are introduced and the relations between them are studied. The upper and lower semicontinuity of their solution sets to parameters are investigated.

Continuity of the Solution Mappings for Parametric Generalized Strong Vector Equilibrium Problems

The stability analysis of the solution mappings for vector equilibrium problems is an important topic in optimization theory and its applications. In this paper, we focus on the continuity of the solution mapping for a parametric generalized strong vector equilibrium problem. By virtue of a nonlinear scalarization technique, a new density result of the solution mapping is obtained. Based on the density result, we give sufficient conditions for the lower semicontinuity and the Hausdorff upper semicontinuity of the solution mapping to the parametric generalized strong vector equilibrium problem. In addition, some examples were given to illustrate that our results improve ones in the literature.

NONEMPTY INTERSECTION THEOREMS AND SYSTEM OF GENERALIZED VECTOR EQUILIBRIUM PROBLEMS IN PRODUCT G-CONVEX SPACES

By using an existence theorems of maximal elements for a family of set-valued mappings in G-convex spaces due to the author, some new nonempty intersection theorems for a family of set-valued mappings were established in noncompact product G-convex spaces. As applications, some equilibrium existence theorems for a system of generalized vector equilibrium problems were proved in noncompact product G-convex spaces. These theorems unify, improve and generalize some important known results in literature.

LEVITIN-POYAK WELL-POSEDNESS OF GENERALIZED VECTOR EQUILIBRIUM PROBLEMS WITH FUNCTIONAL CONSTRAINTS

In this article, we study Levitin-Polyak type well-posedness for generalized vector equilibrium problems with abstract and functional constraints. Criteria and characterizations for these types of well-posednesses are given.

Continuity of Solution Mappings for Parametric Generalized Set-Valued Weak Vector Equilibrium Problems

This paper obtains some stability results for parametric generalized set-valued weak vector equilibrium problem. Under new assumptions, which do not contain any information about solution mappings, the authors establish the continuity of the solution mapping to a parametric generalized set-valued weak vector equilibrium problem without monotonicity. These results extend and improve some results in the literature. Some examples are given to illustrate the results.

SYSTEM OF VECTOR QUASI-EQUILIBRIUM PROBLEMS AND ITS APPLICATIONS

A new system of vector quasi-equilibrium problems is introduced and its existence of solution is proved. As applications, some existence results of weak Pareto equilibrium for both constrained multicriteria games and multicriteria games without constrained correspondences are also shown.

An Equilibrium Version of Set-Valued Ekeland Variational Principle and its Applications to Set-Valued Vector Equilibrium Problems

By using Gerstewitz functions, we establish a new equilibrium version of Ekeland varia- tional principle, which improves the related results by weakening both the lower boundedness and the lower semi-continuity of the objective bimaps. Applying the new version of Ekeland principle, we obtain some existence theorems on solutions for set-valued vector equilibrium problems, where the most used assumption on compactness of domains is weakened. In the setting of X complete metric spaces （Z, d）, we present an existence result of solutions for set-valued vector equilibrium problems, which only requires that the domain X C Z is countably compact in any Hausdorff topology weaker than that induced by d. When （Z, d） is a Fechet space （i.e., a complete metrizable locally convex space）, our existence result only requires that the domain C Z is weakly compact. Furthermore, in the setting of non-compact domains, we deduce several existence theorems on solutions for set-valued vector equilibrium problems, which extend and improve the related known results.

Lower Semicontinuity of the Solution Sets to Parametric Generalized Vector Equilibrium Problems

In this paper,by a scalarization method,the lower semicontinuity of the solution mappings to two kinds of parametric generalized vector equilibrium problems involving set-valued mappings is established under new assumptions which are weaker than the C-strict monotonicity.These results extend the corresponding ones.Some examples are given to illustrate our results.

含参广义向量均衡问题系统解的通有稳定性

目的对含参广义向量均衡问题系统解的通有稳定性进行研究。方法在支付函数受参数扰动的情况下,通过定义2个系统之间的距离,结合集值映射的上半C-连续性、C-凸性以及Fort定理进行研究。结果与结论证明了(W,ρ)是一个完备度量空间,含参广义向量均衡问题系统解映射是上半连续且具紧值的,以及含参广义向量均衡问题系统解的通有稳定性。

On Generalized Vector Equilibrium Problems

A new generalized vector equilibrium problem involving set-valued mappings and the proper quasi concavity of set-valued mappings in topological vector spaces are introduced; its existence theorems and the convexity of the solution sets are established.

含参集值向量均衡问题有效解映射的下半连续性

在实Hausdorff拓扑向量空间中,引进含参集值向量均衡问题的全局有效解与Henig有效解及超有效解的概念。在锥-次类凸的条件下,得到含参集值向量均衡问题的全局有效解与Henig有效解及超有效解的标量化结果。在标量化结果的基础上,并结合比锥-严格单调更弱的新假设条件,研究含参集值向量均衡问题的全局有效解映射与Henig有效解映射及超有效解映射的下半连续性。

向量拟平衡问题系统及其应用

引入了向量拟平衡问题系统并证明了其解的存在性定理.作为应用,还得到约束多目标对策和无约束多目标对策弱Pareto平衡的一些存在性结果.

含参广义集值向量均衡问题有效解映射下半连续的最优条件

在实Hausdorff拓扑向量空间中研究一类含参广义集值向量均衡问题弱有效解与有效解映射的下半连续性.在近似锥-次类凸的条件下,运用标量化的方法得到弱有效解的标量化结果.在适当条件下,得到含参广义集值向量均衡问题弱有效解与有效解映射下半连续性定理.

参数向量均衡问题

提出一类参数向量均衡问题,讨论解映射的连续性。作为应用,得到一类参数向量优化问题和参数向量变分不等式的解的连续性。

含参集值向量均衡问题全局有效解映射和Henig有效解映射的下半连续性

在赋范线性空间中,引进了含参集值向量均衡问题全局有效解和Henig有效解的概念,得到了含参集值向量均衡问题的全局有效解集和Henig有效解集的标量化结果;并在标量化结果的基础上,研究了含参集值向量均衡问题全局有效解映射和Henig有效解映射的下半连续性。

类凸向量均衡问题弱有效解集的连通性

在拓扑线性空间中研究由关于第一个变量是弧类凹、关于第二个变量是类凸的映射所决定的向量均衡问题。在一定的紧性、凸性、与半连续性的条件下,给出了这类向量均衡问题弱有效解的存在性定理。利用向量均衡问题弱有效解的标量化的结果,得到了这类向量均衡问题弱有效解集的连通性结果。

带有向量值费用函数的交通网络平衡问题——模型与分析

研究了向量交通网络平衡问题,引入了一个新的弱平衡原理,将向量交通网络平衡问题转化成一个变分不等式问题.

参数强向量原始与对偶均衡问题解映射的Lipschitz连续性

在赋范线性空间中研究参数强向量原始与对偶均衡问题解映射的Lipschitz连续性。给出了参数强向量原始与对偶均衡问题有效解的概念,提出了向量函数的强凸(凹)性和单调性,应用分析方法建立了参数强向量原始与对偶均衡问题解映射Lipschitz连续的充分性定理。研究表明,参数强向量原始与对偶均衡问题解映射Lipschitz连续的结论具有统一性。