文章基本信息

标题：On fixed points of set-valued directional contractions
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作者：Sehie Park
期刊名称：International Journal of Mathematics and Mathematical Sciences
印刷版ISSN：0161-1712
电子版ISSN：1687-0425
出版年度：1985
卷号：8
期号：4
页码：663-667
DOI：10.1155/S0161171285000722
出版社：Hindawi Publishing Corporation
摘要：
Using equivalent formulations of Ekeland's theorem, we improve fixed point theorems of Clarke, Sehgal, Sehgal-Smithson, and Kirk-Ray on directional contractions by giving geometric estimations of fixed points.