Perturbations of quadratic centers of genus one
Perturbations of quadratic centers of genus one
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DOI:
10.3934/dcds.2009.25.511
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发表时间:
2007-05
期刊:
影响因子:
--
通讯作者:
S. Gautier;L. Gavrilov;I. Iliev
中科院分区:
文献类型:
--
作者:
S. Gautier;L. Gavrilov;I. Iliev
We propose a program for finding the cyclicity of period annuli of quadratic systems with centers of genus one. As a first step, we classify all such systems and determine the essential one-parameter quadratic perturbations which produce the maximal number of limit cycles. We compute the associated Poincare-Pontryagin-Melnikov functions whose zeros control the number of limit cycles. To illustrate our approach, we determine the cyclicity of the annuli of two particular reversible systems.