MINIMAX THEOREMS FOR SUBCONVEXLIKEFUNCTIONS WITH APPLICATIONS TO SADDLEPOINT PROBLEMS

1 IntroductionIt is well known that alternative theorenis and ntinimax tlleorenis fOr inequality systenismore or less liwo1ve sonle couvekity in their assun1Ptions(Refs. l-7). Generally convekity of afunctiou is related to certain couveXity of some set (Ref.&9). In this paper sonle new nAnmaxtl1eorems for bifunctions are obtailled. Tliese results are applied to derive saddle point tl1eorenis(Refs 10-13).In this paper we assume that X,Y Z and W are real locally collvex topological vectorsp…     

几类正则环的结构

本文推广文「２」「３」「４」「５」中的结果，一方面给出了正则环为除环的两个条件，另一方面给出了两类正则环的结构定理。     

习惯形成对居民消费、储蓄影响的理论分析

我国居民消费倾向偏低和储蓄的超常增长成为近年来一个被普遍关注的问题.本文构造了一个基于习惯形成的效用函数,消费者的偏好不仅依赖于当前的消费,还依赖于消费者过去的消费水平,运用含有消费习惯形成的效用函数对当前我国居民的消费倾向偏低及储蓄率居高不下现象给出数学解释.