Quadruple fixed point theorems for nonlinear contractions

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Quadruple fixed point theorems for nonlinear contractions

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. © 2012 Elsevier Ltd. All rights reserved.

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ژورنال

عنوان ژورنال: Computers & Mathematics with Applications

سال: 2012

ISSN: 0898-1221

DOI: 10.1016/j.camwa.2012.02.061