Open Access

A Fixed Point Approach to the Stability of Pexider Quadratic Functional Equation with Involution

Journal of Inequalities and Applications20102010:839639

https://doi.org/10.1155/2010/839639

Received: 10 May 2010

Accepted: 31 July 2010

Published: 16 August 2010

Abstract

We apply the fixed point method to investigate the Hyers-Ulam stability of the Pexider functional equation , for all , where E is a normed space and is an involution.

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Authors’ Affiliations

(1)
Department of Mathematics, Science and Research Branch, Islamic Azad University (IAU), Tehran, Iran
(2)
Section of Mathematics and Informatics, Pedagogical Department, National and Kapodistrian University of Athens, Aghia Paraskevi, Greece
(3)
Department of Mathematics, Amirkabir University of Technology, Tehran, Iran

Copyright

© M. M. Pourpasha et al. 2010

This article is published under license to BioMed Central Ltd. 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.