2007
DOI: 10.1090/s0002-9939-07-08729-1
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Fixed point theorems in ordered abstract spaces

Abstract: Abstract. We extend some fixed point theorems in L-spaces, obtaining extensions of the Banach fixed point theorem to partially ordered sets.

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Cited by 212 publications
(94 citation statements)
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“…Our results also generalize and extend some fixed point and coupled fixed point theorems in partially ordered complete metric spaces and b-metric spaces given by Harjani and Sadarangani [10], Nieto and Rodríguez-López [14,16], Nieto et al [15], Jleli et al [13], O'Regan and Petruşel [17], Ran and Reurings [18], Gnana Bhaskar and Lakshmikantham [8], and Chifu and Petrusel in [6].…”
Section: Preliminariessupporting
confidence: 84%
“…Our results also generalize and extend some fixed point and coupled fixed point theorems in partially ordered complete metric spaces and b-metric spaces given by Harjani and Sadarangani [10], Nieto and Rodríguez-López [14,16], Nieto et al [15], Jleli et al [13], O'Regan and Petruşel [17], Ran and Reurings [18], Gnana Bhaskar and Lakshmikantham [8], and Chifu and Petrusel in [6].…”
Section: Preliminariessupporting
confidence: 84%
“…In this setting, if U ⊂ X × X, then an operator f : X → X is called orbitally U -continuous (see [13]) if:…”
Section: Preliminariesmentioning
confidence: 99%
“…Nieto et al in [14], proved the following fixed point theorem. for ݊߳ ܰ, and there exist an ‫ݔ‬ ߳ ܺ with ‫ݔ‬ ≽ ‫ݔ(݂‬ ); then f has a fixed point.…”
Section: Introductionmentioning
confidence: 98%