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Stability of a mixed additive and cubic functional equation in quasi-Banach spaces |
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| Authors: | Abbas Najati |
| Affiliation: | a Faculty of Sciences, Department of Mathematics, University of Mohaghegh Ardabili, Ardabil, Iran b Faculty of Mathematical Sciences, University of Tabriz, Tabriz, Iran |
| Abstract: | In this paper we establish the general solution and investigate the Hyers-Ulam-Rassias stability of the following functional equation f(2x+y)+f(2x−y)=2f(x+y)+2f(x−y)+2[f(2x)−2f(x)] |
| Keywords: | Hyers-Ulam-Rassias stability Additive mapping Cubic mapping Quasi-Banach space p-Banach space |
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