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http://dx.doi.org/10.7468/jksmeb.2011.18.4.313

A FIXED POINT APPROACH TO THE STABILITY OF THE QUADRATIC-ADDITIVE 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
The Pure and Applied Mathematics / v.18, no.4, 2011 , pp. 313-328 More about this Journal
Abstract
We investigate the stability of the functional equation f(x+y+z+w)+2f(x)+2f(y)+2f(z)+2f(w)-f(x+y)-f(x+z)-f(x+w)-f(y+z)-f(y+w)-f(z+w)=0 by using a flxed point theorem in the sense of L. C$\breve{a}$adariu and V. Radu.
Keywords
Hyers-Ulam-Rassias stability; fixed point method; quadratic-additive functional equation;
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Times Cited By KSCI : 1  (Citation Analysis)
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