摘要
用集合的近似凸性研究函数的预不变凸性,在较弱的假设下获得了预不变凸性的一些等价条件.
Preconvex functions are studied by applying nearly convexity of sets in this paper. Under weaker assumptions,some equivalent conditions for p.econvexity are derived.
出处
《甘肃联合大学学报(自然科学版)》
2006年第3期14-16,共3页
Journal of Gansu Lianhe University :Natural Sciences
关键词
预不变凸函数
闭集
近似凸集
下半连续
preconvex functions
closed sets
nearly convex set
lower semicontinuity