On fixed points of set-valued directional contractions

Sehie Park

International Journal of Mathematics and Mathematical Sciences, 1985, vol. 8, 1-5

Abstract:

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.

Date: 1985
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jijmms:185424

DOI: 10.1155/S0161171285000722

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