论文标题
在Caristi固定点定理上,用于设置值映射
On Caristi fixed point theorem for set-valued mappings
论文作者
论文摘要
本文的目的是讨论Penot关于Caristi固定点定理的概括的问题。我们以负面的方式解决了这个问题,并在有序的度量空间中提出了一些有关设置值映射的固定点的新定理。
The aim of this paper is to discuss Penot's problem on a generalization of Caristi's fixed point theorem. We settle this problem in the negative and we present some new theorems on the existence of fixed points of set-valued mappings in ordered metric spaces.