拓扑型极大极小定理，截口定理和抽象经济平衡点存在定理

Topological Minimax Theorems, Section Theorems and Existence Theorems of Equilibrium Points for Economy

本文首先证明了区间空间上的几个向量值极大极小定理，由此得到几个拓扑到截口定理及其三种等价形式．利用所得结果．本文讨论了抽象经济平衡点存在性问题．

Some vector valued minimax theorems are first proved in interval spaces,and some section theorems with their three equivalent forms are obtained. Utilizing these results,in this paper,the existence problem of equilibrium points for Abstract economy is studied.