节点文献
关于凸集的*隔离定理
ON * -SEPARATION THEOREM OF CONVEX SETS
【摘要】 本文讨论赋范空间X的对偶空间X~*中二凸集的*-隔离性.给出两个充分条件(定理1,定理3).并将其应用于逼近论中,证明了最佳逼近的两个对偶定理.
【Abstract】 The *-separability of two convex sets in the dual space X~* of a normed space X is considered. Two sufficient conditions are given (Th 1, Th 3). As application, two dual theorems of best approximation in approximation theory are proved.
【关键词】 赋范空间;
对偶空间;
凸集;
隔离定理;
【Key words】 normed space; dual space; convex sets; *-separation theorem.;
【Key words】 normed space; dual space; convex sets; *-separation theorem.;
- 【文献出处】 北京师范大学学报(自然科学版) ,Journal of Beijing Normal University(Natural Science) , 编辑部邮箱 ,1987年01期
- 【被引频次】5
- 【下载频次】47