Abstract
We study the number of zeros of Abelian integrals for the quadratic centers having almost all their orbits formed by cubics, when we perturb such systems inside the class of all polynomial systems of degreen
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Zhao, Y., Li, W., Li, C. et al. Linear estimate of the number of zeros of Abelian integrals for quadratic centers having almost all their orbits formed by cubics. Sci. China Ser. A-Math. 45, 964–974 (2002). https://doi.org/10.1007/BF02879979
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DOI: https://doi.org/10.1007/BF02879979