具有下半连续选择对应的抽象经济的平衡

本文中，抽象经济和定性对策的几个平衡存在性定理被证明。在本文框架下，经济人的数目可以是可数无限的，经济人的策略空间可以是无限维和非紧的，选择对应可以是下半连续的而没有开图或开下截口和约束对应可以是间断的而没有开下截口。这些定理改进和推广了最近经济文献中的某些结果。

EQUILIBRIA OF AN Abstract ECONOMY WITH LOWER SEMICONTINUOUS PREFERENCE CORRESPONDENCE

In this paper,several equilibrium existence theorems for abstract economies and qualitative games are proved.In the framework of this paper,the number of agents may be countable infinite,the strategy spaces of agents may be infinite dimensional and noncompact,the preference correspondences are lower semicontinuous without open graphs or open lower sections and the constraint correspondences may be discontinuous without open lower sections.These theorems improve and generalize some recent results in the recent economy literature.