Quadratic-Quartic Functional Equations in RN-Spaces

We obtain the general solution and the stability result for the following functional equation in random normed spaces (in the sense of Sherstnev) under arbitrary t-norms f(2x+y)+f(2x−y)=4[f(x+y)+f(x−y)]+2[f(2x)−4f(x)]−6f(y).

Bibliographic Details
Main Authors: Choonkil Park, M. Eshaghi Gordji, M. Bavand Savadkouhi
Format: Article
Language:English
Published: SpringerOpen 2009-01-01
Series:Journal of Inequalities and Applications
Online Access:http://dx.doi.org/10.1155/2009/868423