Ehsan Movahednia - Behbahan Khatam Al-Anbia University of Technology, Behbahan- Iran.
In this paper, using the fixed point alternative approach, we investigate the Hyers Ulam-Rassias stability of the following functional equation \[f(2x-yi)+f(x-2yi)=4f(x-yi)+f(x)-f(y)\] in Banach spaces.
Ehsan Movahednia, Fixed Point and Generalized Hyers-ulam-rassias Stability of a Quadratic Functional Equation, Journal of Mathematics and Computer Science, 6 (2013), no. 1, 72--78
Movahednia Ehsan, Fixed Point and Generalized Hyers-ulam-rassias Stability of a Quadratic Functional Equation. J Math Comput SCI-JM. (2013); 6(1):72--78
Movahednia, Ehsan. "Fixed Point and Generalized Hyers-ulam-rassias Stability of a Quadratic Functional Equation." Journal of Mathematics and Computer Science, 6, no. 1 (2013): 72--78
