New Collectively Fixed Point Theorems and Applications in G-Convex Spaces
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摘要: 由应用连续单位分解技巧和Tychonoff不动点定理对定义在非紧G-凸空间的乘积空间上的一族集值映象证明了一些新的不动点定理。作为应用,对G-凸空间的乘积空间的一簇子集证明了KyFan型非空交定理;在G-凸空间内给出了非线性不等式组解的一个存在定理和得到了一些抽象经济的平衡存在定理。这些定理改进和推广了很多最近文献中重要的已知结果。Abstract: By applying the technique of continuous partition of unity and Tychonoff.s fixed point theorem,some new collectively fixed point the orems for a family of set-valued mappings defined on the product space of noncompact G-convexs paces are proved.Asapplications,some nonempty intersection the orems of Ky Fantype for a family of subsets of the products pace of G-convex spaces are proved;An existence the orem of solutions for a system of nonlinear inequlities is given in G-convex spaces and some equilibrium existence theorems of abstract economies are also obtained in G-convex spaces.Our theorems improve,unify and generalizd many important known results in the recent literature.
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