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http://dx.doi.org/10.5831/HMJ.2012.34.1.19

A FIXED POINT APPROACH TO THE STABILITY OF THE MIXED TYPE FUNCTIONAL EQUATION  

Jin, Sun-Sook (Department of Mathematics Education, Gongju National University of Education)
Lee, Yang-Hi (Department of Mathematics Education, Gongju National University of Education)
Publication Information
Honam Mathematical Journal / v.34, no.1, 2012 , pp. 19-34 More about this Journal
Abstract
In this paper, we investigate the stability of a functional equation f(x+y+z)-f(x+y)-f(y+z)-f(x+z)+f(x)+f(y)+f(z) = 0 by using the fixed point theory in the sense of L. Cadariu and V. Radu.
Keywords
Hyers-Ulam-Rassias stability; fixed point method; mixed type functional equation;
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