SYSTEM OF GENERALIZED VECTOR QUASI-EQUILIBRIUM PROBLEMS ON PRODUCT FC-SPACES

By applying a maximal element theorem on product FC-space due to author, some new equilibrium existence theorems for generalized games with fuzzy constraint correspondences are proved in FC-spaces. By using these equilibrium existence theorems, some new existence theorems of solutions for the system of generalized vector quasi-equilibrium problems are established in noncompact product FC-spaces. These results improve and generalize some recent results in literature to product FC-spaces without any convexity structure.

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.

A STRONG CONVERGENCE THEOREM FOR QUASI-EQUILIBRIUM PROBLEMS IN BANACH SPACES

In this paper,we study an extragradient algorithm for approximating solutions of quasi-equilibrium problems in Banach spaces.We prove strong convergence of the sequence generated by the extragradient method to a solution of the quasi-equilibrium problem.

GENERALIZED VECTOR QUASI-EQUILIBRIUM PROBLEMSIN LOCALLY G-CONVEX SPACES

Some classes of generalized vector quasi-equilibrium problems ( in short, GVQEP) are introduced and studied in locally G-convex spaces which includes most of generalized vector equilibrium problems; generalized vector variational inequality problems, quasi-equilibrium problems and quasi-variational inequality problems as special cases. First, an equilibrium existence theorem for one person games is proved in locally G-convex spaces.. As applications, some new existence theorems of solutions for the GVQEP are established in noncompact locally G-convex spaces. These results and argument methods are new and completely different from that in recent literature.

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.

MATHEMATICAL PROGRAMS WITH SYSTEM OF GENERALIZED VECTOR QUASI-EQUILIBRIUM CONSTRAINTS IN FC-SPACES

In this article, four new classes of systems of generalized vector quasi-equilibrium problems are introduced and studied in FC-spaces without convexity structure. The notions of Ci（x）-FC-partially diagonally quasiconvex, Ci（x）-FC-quasiconvex, and Ci（x）-FC- quasiconvex-like for set-valued mappings are also introduced in FC-spaces. By applying these notions and a maximal element theorem, the nonemptyness and compactness of solution sets for four classes of systems of generalized vector quasi-equilibrium problems are proved in noncompact FC-spaces. As applications, some new existence theorems of solutions for mathematical programs with system of generalized vector quasi-equilibrium constraints are obtained in FC-spaces. These results improve and generalize some recent known results in literature.

PREDICTOR-CORRECTOR ALGORITHMS FOR SOLVING GENERALIZED MIXED IMPLICIT QUASI-EQUILIBRIUM PROBLEMS

A new class of generalized mixed implicit quasi-equilibrium problems （GMIQEP） with four-functions is introduced and studied. The new class of equilibrium problems includes many known generalized equilibrium problems and generalized mixed implicit quasi-variational inequality problems as many special cases. By employing the auxiliary principle technique, some predictor-corrector iterative algorithms for solving the GMIQEP are suggested and analyzed. The convergence of the suggested algorithm only requires the continuity and the partially relaxed implicit strong monotonicity of the mappings

参数向量Ky Fan不等式与对偶问题解映射Lipschitz连续性最优条件

在赋范线性空间中研究参数向量Ky Fan不等式与对偶问题解映射的Lipschitz连续性。提出了参数向量Ky Fan不等式与对偶问题及其有效解的概念,引入了向量函数伪单调性和强拟凸(凹)性,借助分析方法获得了参数向量Ky Fan不等式与对偶问题解映射的Lipschitz连续性最优条件,并举例加以说明。

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.

Existence of Solutions to Generalized Vector Quasi-Equilibrium Problems with Discontinuous Mappings

Let X, Y be two finite-dimensional topological vector spaces, Z a Hausdorff topological vector space, K C X and D C Z be two nonempty sets, C be a pointed, closed, and convex cone in Y with int C ≠θ Let S ： K → 2^K and T ： K → 2^D be two multivalued mappings, and φ ： K × D × K → Y be a trifunction. In this paper, we consider the generalized vector quasi-equilibrium problem, which is formulated by finding X∈ K and y∈ T（x） such that x∈ E S（x） and φ（x,y, u） （∈/） -int C for all u ∈ S（x）. We establish an existence result in which T is not supposed to have any continuity property. Our results extend and improve the corresponding results of Cubiotti, Yao and Guo.

向量平衡问题强有效解集的连通性

本文主要在自反Banach空间中研究向量平衡问题强有效解集的连通性。利用新定义的非线性函数,将1个非凸非闭集合和1个紧致集分离;证明强向量平衡问题的强有效解集可以表示为非线性标量问题解集的并集,从而得到向量平衡问题强有效解集的连通性。

System of Generalized Symmetric Vector Quasi-Equilibrium Problems for Set-Valued Mappings

In this paper, a system of generalized symmetric vector quasi-equilibrium problems for set-valued mappings is introduced. By using a scalarization method and a fixed-point theorem, the existence result for its solution is established. The main result extends the corresponding results in Fu (J. Math. Anal. Appl. 285, 708–713, 2003) and Zhang, Chen and Li (OR Transactions 10, 24–32, 2006).

广义强向量拟平衡问题解的存在性和Hadamard适定性

首先,在映射-f(·,y,u)自然拟C-凸和映射f上半(-C)-连续的条件下,构造一个重要辅助函数,利用不同的证明方法,在不要求C*具有弱*紧基的情况下,建立了广义强向量拟平衡问题解的存在性定理.然后在适当条件下,给出问题序列收敛的定义,建立解集映射的上半连续性,并讨论广义强向量拟平衡问题的Hadamard适定性,得到广义强向量拟平衡问题的Hadamard适定性成立的充分条件.

对称强向量拟均衡问题解集的稳定性及本质连通区的存在性

研究对称强向量拟均衡问题解集的稳定性。在约束集值映射满足一定连续性与目标映射是锥-真拟凸的条件下证明了对称强向量拟均衡问题构成的空间M中,大多数(在Baire分类意义下)对称强向量拟均衡问题的解集是稳定的,并证明了M中的每个对称强向量拟均衡问题的解集至少存在一个本质连通区。

具有控制结构的广义强向量拟均衡问题联立系统

利用锥连续性与不动点定理,研究具有控制结构的广义强向量拟均衡问题联立系统,得到解的存在定理与解集的闭性,并应用于Debreu型强向量均衡问题与广义强向量拟鞍点组的解。

广义强向量拟均衡问题组的解的存在性

介绍并研究了一类广义强向量拟均衡问题组.通过应用P-连续、真P-拟凸和K-F-G不动点定理,得到了关于这类广义强向量拟均衡问题组的一些解的存在性定理.所得结果推广了已有的相应结果.

集值向量拟均衡系统的强解

均衡问题是变分不等式问题与相补问题的有意义的推广,它在优化问题、数理经济、物理和力学等方面都有广泛的应用。在拓扑线性空间中,讨论具控制结构的集值向量拟均衡系统,利用极大元定理,在较弱的锥连续的条件下,得到强解的存在性定理,并证明解集是紧子集。作为应用,得到向量拟变分不等式系统、Debreu型向量均衡问题与向量优化问题组的强解与解集的紧性。

向量均衡问题有效解与强解的存在性

利用Browder不动点定理,FKKM定理和Park不动点定理,在序锥拓扑内部为空集的情况下,不用标量化的方法,证明了向量均衡问题有效解与强解的存在性。

集值广义强向量均衡问题解的存在性

引进集值广义强向量均衡问题,在没有使用序锥的对偶锥具有弱*紧基的前提下,应用Kakutani-Fan-Glicksberg不动点定理证明了集值广义强向量均衡问题的解的存在性定理。