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General theorems of the Knaster-Kuratowski- Mazurkiewicz type and applications to the existence study in optimization
Optimization ( IF 1.6 ) Pub Date : 2020-03-03 , DOI: 10.1080/02331934.2020.1736069
Phan Quoc Khanh 1, 2 , Vo Si Trong Long 2, 3
Affiliation  

ABSTRACT We establish theorems of the Knaster-Kuratowski-Mazurkiewicz (KKM) type on topological spaces with topologically-based generalized convex structures and apply them to the existence study for variational relation problems, variational inequalities, minimax inequalities and saddle points, and to alternative theorems. Our first main KKM-type theorem is a necessary and sufficient condition, not only a sufficient one as usual. The results improve and extend corresponding contributions in the literature in many aspects.

中文翻译:

Knaster-Kuratowski-Mazurkiewicz 型的一般定理及其在优化存在性研究中的应用

摘要 我们在具有基于拓扑的广义凸结构的拓扑空间上建立了 Knaster-Kuratowski-Mazurkiewicz (KKM) 类型的定理,并将它们应用于变分关系问题、变分不等式、极小极大不等式和鞍点的存在性研究,以及替代定理. 我们的第一个主要 KKM 类型定理是一个充分必要条件,而不是通常的充分条件。结果在许多方面改进和扩展了文献中的相应贡献。
更新日期:2020-03-03
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