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Jin, Sun-Sook,Lee, Yang-Hi The Youngnam Mathematical Society 2020 East Asian mathematical journal Vol.36 No.1
In this paper, we investigate Hyers-Ulam-Rassias stability of an additive-quartic functional equation, of a quadratic-quartic functional equation, and of a cubic-quartic functional equation.
진선숙,이양희 영남수학회 2020 East Asian mathematical journal Vol.36 No.1
In this paper, we investigate Hyers-Ulam-Rassias stability of an additive-quartic functional equation, of a quadratic-quartic functional equation, and of a cubic-quartic functional equation.
A FIXED POINT APPROACH TO THE STABILITY OF A QUADRATIC-CUBIC-QUARTIC FUNCTIONAL EQUATION
이양희 영남수학회 2019 East Asian mathematical journal Vol.35 No.5
In this paper, we investigate the stability problems for a functional equation f(x+2y) +&f(x-2y)-4f(x+y)-4f(x-y)+6f(x)-2f(2y)+12f(y)-4f(-y) = 0 by using the fixed point theory in the sense of L. C\u{a}dariu and V. Radu.
Hyers-Ulam-Rassias stability of a quadratic-cubic-quartic functional equation
이양희 강원경기수학회 2020 한국수학논문집 Vol.28 No.2
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*}
STABILITY OF A QUADRATIC-CUBIC-QUARTIC FUNCTIONAL EQUATION
이양희 충청수학회 2020 충청수학회지 Vol.33 No.1
In this paper, we investigate the stability of a quadratic-cubic-quartic functional equation
STABILITY OF A QUADRATIC-CUBIC-QUARTIC FUNCTIONAL EQUATION
Yang-Hi Lee 충청수학회 2020 충청수학회지 Vol.33 No.1
In this paper, we investigate the stability of a quadratic-cubic-quartic functional equation
A FIXED POINT APPROACH TO THE STABILITY OF A QUADRATIC-CUBIC-QUARTIC FUNCTIONAL EQUATION
Lee, Yang-Hi The Youngnam Mathematical Society 2019 East Asian mathematical journal Vol.35 No.5
In this paper, we investigate the stability problems for a functional equation f(x + 2y)+f(x - 2y) - 4f(x + y) - 4f(x - y) + 6f(x) - 2f(2y) + 12f(y) - 4f(-y) = 0 by using the fixed point theory in the sense of L. C˘adariu and V. Radu.
A FIXED POINT APPROACH TO THE STABILITY OF AN ADDITIVE-QUADRATIC-QUARTIC FUNCTIONAL EQUATION
이양희 충청수학회 2020 충청수학회지 Vol.33 No.1
In this paper, we investigate the stability of a functional equation \begin{align*}& f(x+3y) -5 f(x+2y) +10f(x+y) - 8f(x) + 5f(x-y) - f(x-2y)\\ & -2f(-x)-f(2x)+f(-2x) = 0 \end{align*} by using the fixed point theory in the sense of L. C\u adariu and V. Radu.
Hyers-Ulam-Rassias stability of an additive-quadratic-quartic functional equation
Yang-Hi Lee 호남수학회 2019 호남수학학술지 Vol.41 No.4
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) +2(k^2-1)f(x)\nonumber \\ &\ + (k^2+k)f(y)+ (k^2-k)f(-y)-2f(ky)=0. \end{align*}
HYERS-ULAM-RASSIAS STABILITY OF AN ADDITIVE-QUADRATIC-QUARTIC FUNCTIONAL EQUATION
Lee, Yang-Hi The Honam Mathematical Society 2019 호남수학학술지 Vol.41 No.4
In this paper, we investigate Hyers-Ulam-Rassias stability of a functional equation f(x + ky) + f(x - ky) - k<sup>2</sup>f(x + y) - k<sup>2</sup>f(x - y) + 2(k<sup>2</sup> - 1)f(x) + (k<sup>2</sup> + k)f(y) + (k<sup>2</sup> - k)f(-y) - 2f(ky) = 0.