The Hyers–Ulam stability of an additive-quadratic s-functional inequality in Banach spaces
The Hyers–Ulam stability of an additive-quadratic <i>s</i>-functional inequality in Banach spaces
  • Chaobankoh, Tanadon
  • Suparatulatorn, Raweerote
  • Park, Choonkil
  • Cho, Yeol Je
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초록

For any fixed s is an element of {z is an element of C : z not equal 0 and vertical bar z vertical bar < 1}, we consider the following functional inequality: parallel to f(a + a', c + c') + f(a + a', c - c') + f(a - a', c + c') + f(a - a', c - c')-4f(a, c) - 4f(a, c')parallel to <= parallel to s(2f(a + a', c - c') +2f(a-a', c+c')-4f(a, c) - 4f(a, c') + 4f(a', c'))parallel to. (1) In this paper, we obtain the Hyers-Ulam stability of the proposed functional inequality using the direct and fixed point methods.

키워드

Hyers-Ulam stabilityAdditive-quadratic functional inequalityFixed point methodDirect methodEQUATION
제목
The Hyers–Ulam stability of an additive-quadratic s-functional inequality in Banach spaces
제목 (타언어)
The Hyers–Ulam stability of an additive-quadratic <i>s</i>-functional inequality in Banach spaces
저자
Chaobankoh, TanadonSuparatulatorn, RaweerotePark, ChoonkilCho, Yeol Je
DOI
10.1007/s11587-021-00648-3
발행일
2024-04
유형
Article
저널명
Ricerche di Matematica
73
2
페이지
1029 ~ 1044