Approximate Quadratic-Additive Mappings in Fuzzy Normed Spaces

被引:0
|
作者
Chang, Ick-Soon [1 ]
Lee, Yang-Hi [2 ]
机构
[1] Chungnam Natl Univ, Dept Math, Taejon 305764, South Korea
[2] Gongju Natl Univ Educ, Dept Math Educ, Gongju 314711, South Korea
基金
新加坡国家研究基金会;
关键词
STABILITY;
D O I
10.1155/2014/494781
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
We examine the generalized Hyers-Ulam stability of the following functional equation: 2f (x + y + z + w) + f (- x - y + z + w) + f (-x + y - z + w) + f (- x + y + z - w) + f (x - y - z + w) + f (x - y + z - w) + f (x + y - z - w) - 5f (x) - 3f (-x) -5f (y) - 3f (- y) - 5f (z) - 3f (-z) - 5f (w) - 3f (-w) = 0, in the fuzzy normed spaces with the fixed point method.
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页数:7
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