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  • Research Article
  • Open Access

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

Fixed Point Theory and Applications20082008:732086

  • Received: 27 September 2007
  • Accepted: 26 November 2007
  • Published:


Cădariu and Radu applied the fixed point method to the investigation of Cauchy and Jensen functional equations. In this paper, we will adopt the idea of Cădariu and Radu to prove the Hyers-Ulam-Rassias stability of the quadratic functional equation with involution.


  • Functional Equation
  • Differential Geometry
  • Point Method
  • Computational Biology
  • Full Article

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Authors’ Affiliations

Mathematics Section, College of Science and Technology, Hong-Ik University, Chochiwon, 339-701, South Korea
Department of Mathematics, Chungnam National University, Deajeon, 305-764, South Korea


© S.-M. Jung and Z.-H. Lee. 2008

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.