对没有凸值和连续性的集值映象的最佳逼近定理<sup>*</sup>

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对没有凸值和连续性的集值映象的最佳逼近定理^*

基金项目: * 四川省教委重点科研项目

摘要: 本文引入和研究了一类具有弱凸图的集值映象.对这类映象证明了某些新的重合定理,最佳逼近和不动点定理.
- 最佳逼近 /
- 重合 /
- 不动点 /
- 拓扑向量空间
Abstract: In this paper,a new concept of weakly convex graph for set-valued mappings is introduced and studied.By using the concept,some new coincidence,the best approximation and fixed point theorems are obtained.
- best approximation /
- coincidence /
- fixed point /
- topological vector space

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