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Hyers-Ulam-Rassias stability of a quadratic-cubic-quartic functional equation

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In this paper, we investigate Hyers-Ulam-Rassias stability of a functional equation \begin{align*} f(&x +ky) + f(x-ky) - k^2f(x+y) - k^2f(x-y) \nonumber \\ &\ +2(k^2-1)f(x)+ (k^2+k^3)f(y)+ (k^2-k^3)f(-y)-2f(ky)=0. \end{align*}

Abstract

In this paper, we investigate Hyers-Ulam-Rassias stability of a functional equation \begin{align*} f(&x +ky) + f(x-ky) - k^2f(x+y) - k^2f(x-y) \nonumber \\ &\ +2(k^2-1)f(x)+ (k^2+k^3)f(y)+ (k^2-k^3)f(-y)-2f(ky)=0. \end{align*}

참고문헌 (6)

  1. J. Baker, "A general functional equation and its stability", Proc. Natl. Acad. Sci, 133(6), pp.1657~1664 (2005)
  2. P. Gavruta, "A generalization of the Hyers-Ulam-Rassias stability of approxi-mately additive mappings", J. Math. Anal. Appl, 184, pp.431~436 (1994)
  3. D. H. Hyers, "On the stability of the linear functional equation", Proc. Natl. Acad. Sci. U. S. A, 27, pp.222~224 (1941)
  4. M. E. Gordji, "General quartic-cubic-quadratic functional equation in non-Archimedean normed spaces", U. P. B. Sci. Bull. Series A, 72(3), pp.69~84 (2010)
  5. Th. M. Rassias, "On the stability of the linear mapping in Banach spaces", Proc. Amer. Math. Soc, 72, pp.297~300 (1978)
  6. S.M. Ulam, "A Collection of Mathematical Problems" (1960), Interscience

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