摘要
在本文中,作者在相当弱的假设下证明了某些新的KyFan型最佳逼近定理和重合点定理.将Ding-Tan(1992)的结果改进和推广到了映象对和不同拓朴矢量空间,从而改进、推广。
In this paper, we prove some new best approximation theorems of Ky Fan′s type and new coincidence theorems umder very weak assumptions. Our theorems inprove and generalize the recent results of Ding Tan (1992) to two mappings and two different space setting. Hence, our theorems improve, generalize and unify many recent results obtained by many authors in this direction.
出处
《四川师范大学学报(自然科学版)》
CAS
CSCD
1996年第2期10-17,共8页
Journal of Sichuan Normal University(Natural Science)
基金
国家自然科学基金资助项目
关键词
最佳逼近
重合点
上半连续
重合定理
Best approximation, coincidence point, upper semi continuous