Stability of a quadratic functional equation in quasi--Banach spaces

다국어 초록 (Multilingual Abstract)

In this paper we establish the general solution and investigate
the Hyers–Ulam–Rassias stability of the following functional equation in
quasi-Banach spaces. [수식] where Iij = {1, 2, 3, 4}＼{i, j} for all 1 ≤ i < j ≤ 4. The concept of Hyers-Ulam-Rassias stability originated from Th. M. Rassias’ stability theorem
that appeared in his paper: On the stability of the linear mapping in
Banach spaces, Proc. Amer. Math. Soc. 72 (1978), 297–300.

다국어 초록 (Multilingual Abstract)

In this paper we establish the general solution and investigate
the Hyers–Ulam–Rassias stability of the following functional equation in
quasi-Banach spaces. [수식] where Iij = {1, 2, 3, 4}＼{i, j} for all 1 ≤ i < j ≤ 4. The concept of Hyers-Ulam-Rassias stability originated from Th. M. Rassias’ stability theorem
that appeared in his paper: On the stability of the linear mapping in
Banach spaces, Proc. Amer. Math. Soc. 72 (1978), 297–300.

참고문헌 (Reference)

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