학술저널
GENERALIZED STABILITY OF EULER-LAGRANGE TYPE QUADRATIC MAPPINGS
- 충청수학회
- Journal of the Chungcheong Mathematical Society
- Volume 20, No. 4
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2007.12535 - 542 (8 pages)
- 0
In this paper, we investigate the generalized Hyers{Ulam{Rasssias stability of the following Euler-Lagrange type qua- dratic functional equation f(ax+by+cz)+f(ax+by¡cz)+f(ax¡by + cz) + f(ax ¡ by ¡ cz) = 4a2f(x) + 4b2f(y) + 4c2f(z).
1. Introduction
2. Euler-Lagrange type quadratic mapping in Banach spaces
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