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Publisher: Pergamon-elsevier Science LtdSubject: Nonlinear contraction

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    Article
    Citation - WoS: 52
    Citation - Scopus: 69
    Quadruple Fixed Point Theorems for Nonlinear Contractions
    (Pergamon-elsevier Science Ltd, 2012) Karapinar, Erdal; Nguyen Van Luong
    The notion of coupled fixed point is introduced by Gnana-Bhaskar and Lakshmikantham. Very recently, the concept of tripled fixed point was introduced by Berinde and Borcut. In this manuscript, a quadruple fixed point is considered and some new related fixed point theorems are obtained. We also give some examples to illustrate our results. (c) 2012 Elsevier Ltd. All rights reserved.