Abstract and Applied Analysis
Volume 2009 (2009), Article ID 417473, 14 pages
Solution and Stability of a Mixed Type Cubic and Quartic Functional Equation in Quasi-Banach Spaces
1Department of Mathematics, Semnan University, P. O. Box 35195-363, Semnan, Iran
2Section of Mathematics and Informatics, Pedagogical Department, National and Capodistrian University of Athens, 4, Agamemnonos Street, Aghia Paraskevi, 15342 Athens, Greece
Received 24 January 2009; Accepted 6 August 2009
Academic Editor: Elena Litsyn
Copyright © 2009 M. Eshaghi Gordji 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 obtain the general solution and the generalized Ulam-Hyers stability of the mixed type cubic and quartic functional equation in quasi-Banach spaces.