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The Scientific World Journal
Volume 2014, Article ID 673647, 10 pages
Research Article

PPF Dependent Fixed Point Results for Triangular -Admissible Mappings

1Faculty of Mathematics Engineering, Kraljice Marije 16, 11 000 Belgrade, Serbia
2Department of Mathematics, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
3Young Researchers and Elite Club, Rasht Branch, Islamic Azad University, Rasht, Iran
4Università degli Studi di Palermo, Dipartimento di Matematica e Informatica, Via Archirafi 34, 90123 Palermo, Italy

Received 30 August 2013; Accepted 27 October 2013; Published 2 February 2014

Academic Editors: K. Sadarangani and P. Wang

Copyright © 2014 Ljubomir Ćirić et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We introduce the concept of triangular -admissible mappings (pair of mappings) with respect to nonself-mappings and establish the existence of PPF dependent fixed (coincidence) point theorems for contraction mappings involving triangular -admissible mappings (pair of mappings) with respect to nonself-mappings in Razumikhin class. Several interesting consequences of our theorems are also given.