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On a direct method for proving the Hyers-Ulam stability of functional equations |
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| Authors: | Justyna Sikorska |
| Affiliation: | Institute of Mathematics, Silesian University, Bankowa 14, PL-40-007 Katowice, Poland |
| Abstract: | We study the stability of an equation in a single variable of the form f(x)=af(h(x))+bf(−h(x)) |
| Keywords: | Stability of a functional equation Approximation Orthogonal additivity Drygas equation |
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