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.

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.

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.

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.

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.

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.

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.

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).

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。

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.

含参广义向量拟均衡问题强有效解映射下半连续性最优条件

为了在赋范向量空间中研究含参广义向量拟均衡问题弱有效解与强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,并给出弱有效解与强有效解映射下半连续的最优条件。结果表明,2种有效解映射下半连续的最优条件具有统一性。

含参数广义强向量均衡问题解映射在混合扰动下的连续性

针对含参数广义强向量均衡问题,在有偏序扰动的混合扰动下,建立了其有效解映射.证明了此解映射在更弱的条件下具有连续性.给出一些例子阐述了该结果是最近相应文献中结果的推广,并且说明了最近文献中的结果并非真正本质的.

数学解题的形式化方法

对数学解题中一类规律进行了总结,重点通过齐次线性方程组的形式化解法说明了数学解题中形式化方法的应用,说明了应用此方法可以把许多复杂的数学问题的综合答案同时求出,从而收到事半功倍的效果.

含参广义向量均衡问题有效解映射下半连续性的最优条件

在实Hausdorff拓扑向量空间中研究含参广义向量均衡问题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含参广义向量均衡问题各种有效解的标量化结果,并给出各种有效解映射下半连续性的充分条件。结果表明,对不同有效解映射下半连续性的充分性条件具有统一性。

一类含参广义向量拟均衡问题各种有效解映射的下半连续性

在赋范向量空间中,引进一类含参广义向量拟均衡问题,给出各种有效解的概念。在锥-次类凸的条件下,得到各种有效解的标量化结果。在适当假设条件下,得到含参广义向量拟均衡问题各种有效解映射的下半连续性。

含参广义向量拟均衡问题有效解映射的下半连续性

针对一类含参广义向量拟均衡问题,在实Hausdorff拓扑向量空间中研究了有效解映射的下半连续性。在锥凹、一致连续及Hausdorff上半连续的假设下,运用分析的方法,得到了含参广义向量拟均衡问题有效解映射下半连续性定理。

参数广义弱向量拟平衡问题解映射的H-连续性刻画

研究了Hausdorff拓扑向量空间中的一类参数广义弱向量拟平衡问题(PGWVQEP)的稳定性.首先,给出了此问题的参数间隙函数,研究了参数间隙函数的连续性.然后,提出了一个与参数间隙函数相关的关键假设,讨论了它的连续性,并给出关键假设的等价刻画.最后,借助于假设,获得了PGWVQEP解映射Hausdorff半连续的充分必要条件.并举例验证了所得结果.

扰动广义向量变分不等式解的半连续性(英文)

本文通过标量化的方法在Hausdorff拓扑向量空间中讨论了扰动广义向量变分不等式解的下半连续性.