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偏序集上拟压缩映象的一个不动点定理及应用 被引量:1

A Fixed Point Theorem for Quasi-contractive Mappings in Partially Ordered Sets with Applications
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摘要 证明了偏序集上拟压缩映象的一个不动点定理,将偏序集上的单调映象不动点的存在性推广到拟压缩映象的情形,并应用此结果得到了在一定条件下一对耦合映射的不动点的存在性. In this paper, we prove a Fixed point theorem for quasi-contractive mappings in partially ordered sets, the result extends contractive maps to the case of quasi-contractive maps. As an application, we derive an existence result of common Fixed points for a couple of quasi-contractive mappings under certain conditions.
作者 卫星 张万雄
出处 《四川师范大学学报(自然科学版)》 CAS CSCD 北大核心 2009年第4期421-423,共3页 Journal of Sichuan Normal University(Natural Science)
基金 国家自然科学基金青年基金(NSFY60804065)资助项目
关键词 不动点 偏序集 拟压缩映象 单调性 Fixed point Partially ordered set Quasi-contractive mapping Monotonicity
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