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Stability of some 2-dimensional functional equations

Authors
Lee,Yang-HiJung, Soon-Mo
Issue Date
Feb-2016
Publisher
Hikari Ltd
Citation
International Journal of Mathematical Analysis, v.10, no.01�� 04��, pp.171 - 190
Journal Title
International Journal of Mathematical Analysis
Volume
10
Number
01�� 04��
Start Page
171
End Page
190
URI
https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/13413
DOI
10.12988/Ijma.2016.512303
ISSN
1312-8876
Abstract
We prove the generalized Hyers-Ulam stability of a functional equation \begin{align*} f(ax&+by) + ab f(x-y) - \frac{a(2b+a+1)}{2} f(x) - \frac{b(b+1)}{2} f(y) \\ & -\frac{a(a-1)}{2} f(-x) - \frac{b(2a+b-1)}{2} f(-y) = 0 \end{align*} whose solutions are quadratic-additive mappings.
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