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Stability of an Additive-Quadratic Functional Equation in a Banach Spaceopen access
- Issue Date
- Aug-2025
- Publisher
- Etamaths Publishing
- Keywords
- Hyers-Ulam stability; additive-quadratic functional equation; direct method; fixed point method
- Citation
- International Journal of Analysis and Applications, v.23, pp 1 - 13
- Pages
- 13
- Indexed
- SCOPUS
ESCI
- Journal Title
- International Journal of Analysis and Applications
- Volume
- 23
- Start Page
- 1
- End Page
- 13
- ISSN
- 2291-8639
2291-8639
- Abstract
- Using the direct and fixed point methods, we obtain the Hyers-Ulam stability of the following additive-quadratic functional equation: in a Banach space. 2h(p+q,r+s) +h(p +q,r-s) = 3 [h(p,r) +h(p,s) +h(q,r) +h(q,s)] (1)
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