Abstract
In this paper, we first consider a cubic integrable system under general quadratic perturbations. We then study the Melnikov functions of the perturbed system up to the fourth order. Our studies show that the first four Melnikov functions are sufficient to obtain the center conditions for the perturbed system.
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This work is supported by Isfahan University of Technology (IUT).
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Asheghi, R. The center conditions for a perturbed cubic center via the fourth-order Melnikov function. Rev. Real Acad. Cienc. Exactas Fis. Nat. Ser. A-Mat. 116, 189 (2022). https://doi.org/10.1007/s13398-022-01333-2
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DOI: https://doi.org/10.1007/s13398-022-01333-2