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http://dx.doi.org/10.14403/jcms.2016.29.3.453

A FIXED POINT APPROACH TO STABILITY OF ADDITIVE FUNCTIONAL INEQUALITIES IN FUZZY NORMED SPACES  

Kim, Chang Il (Department of Mathematics Education Dankook University)
Park, Se Won (Department of Liberal arts and Science Shingyeong University)
Publication Information
Journal of the Chungcheong Mathematical Society / v.29, no.3, 2016 , pp. 453-464 More about this Journal
Abstract
In this paper, we investigate the solution of the following functional inequality $$N(f(x)+f(y)+f(z),t){\geq}N(f(x+y+z),mt)$$ for some fixed real number m with $\frac{1}{3}$ < m ${\leq}$ 1 and using the fixed point method, we prove the generalized Hyers-Ulam stability for it in fuzzy Banach spaces.
Keywords
Hyers-Ulam stability; additive functional inequality; fuzzy normed space; fixed point theorem;
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1 T. Aoki, On the stability of the linear transformation in Banach spaces, J. Math. Soc. Japan 2 (1950), 64-66.   DOI
2 T. Bag and S. K. Samanta, Finite dimensional fuzzy normed linear spaces, J. Fuzzy Math. 3 (2003), 687-705.
3 S. C. Cheng and J. N. Mordeson, Fuzzy linear operator and fuzzy normed linear spaces, Bull. Calcutta Math. Soc. 86 (1994), 429-436.
4 P. W. Cholewa, Remarkes on the stability of functional equations, Aequationes Math. 27 (1984), 76-86.   DOI
5 S. Czerwik, On the stability of the quadratic mapping in normed spaces, Abh. Math. Sem. Univ. Hamburg 62 (1992), 59-64.   DOI
6 M. Mirzavaziri and M. S. Moslehian, A fixed point approach to stability of a quadratic equation, Bulletin of the Brazilian Mathematical Society 37 (2006), 361-376.   DOI
7 M. S. Moslehian and T. H. Rassias, Stability of functional equations in non-Archimedean spaces, Applicable Anal. Discrete Math. 1 (2007), 325-334.   DOI
8 C. Park, Fuzzy Stability of Additive Functional Inequalities with the Fixed Point Alternative, J. Inequal. Appl. 2010 (2010), 1-17.
9 C. Park, Y. S. Cho, and M. H. Han, Functional inequalities associated with Jordan-von Neumann type additive functional equations, J. Inequal. Appl. 2007 (2007).
10 Th. M. Rassias, On the stability of the linear mapping in Banach sapces, Proc. Amer. Math. Sco. 72 (1978), 297-300.   DOI
11 J. Ratz, On inequalities associated with the Jordan-von Neumann functional equation, Aequationes Mathematicae 66 (2003), 191-200.   DOI
12 S. M. Ulam, Problems in Modern Mathematics, Wiley, New York; 1964.
13 A. Gilanyi, Eine zur Parallelogrammgleichung "aquivalente Ungleichung, Aequationes Mathematicae 62 (2001), 303-309.   DOI
14 J. B. Diaz and B. Margolis, A fixed point theorem of the alternative, for con-tractions on a generalized complete metric space, Bulletin of the American Mathematical Society 74 (1968), 305-309.   DOI
15 W. Fechner, Stability of a functional inequalty associated with the Jordan-Von Neumann functional equation, Aequationes Mathematicae 71 (2006), 149-161.   DOI
16 P. Gavruta, A generalization of the Hyer-Ulam-Rassias stability of approximately additive mappings, J. Math. Anal. Appl. 184 (1994), 431-436.   DOI
17 A. Gilanyi, On a problem by K. Nikoden, Mathematical Inequalities and Applications 5 (2002), 701-710.
18 D. H. Hyers, On the stability of the linear functional equation, Proc. Nat. Acad. Sci. 27 (1941), 222-224.   DOI
19 A. K. Katsaras, Fuzzy topological vector spaces II, Fuzzy Sets Syst. 12 (1984), 143-154.   DOI
20 H. M. Kim, K. W. Jun, and E. Son, Hyers-Ulam stability of Jensen functional inequality in p-Banach spaces, Abstract and Applied Analysis 2012 (2012), 1-16.
21 I. Kramosil and J. Michalek, Fuzzy metric and statistical metric spaces, Kybernetica 11 (1975), 326-334.
22 A. K. Mirmostafaee, M. Mirzavaziri, and M. S. Moslehian, Fuzzy stability of the Jensen functional equation, Fuzzy Sets Syst. 159 (2008), 730-738.   DOI
23 A. K. Mirmostafaee and M. S. Moslehian, Fuzzy almost quadratic functions, Results Math. 52 (2008), 161-177.   DOI
24 A. K. Mirmostafaee and M. S. Moslehian, Fuzzy versions of Hyers-Ulam-Rassias theorem, Fuzzy Sets Syst. 159 (2008), 720-729.   DOI