The cyclicity of the period annulus of two classes of cubic isochronous systems
The cyclicity of the period annulus of two classes of cubic isochronous systems
复制标题
两类立方等时系统周期环的循环性
DOI:
10.11948/2013020
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发表时间:
2013-08
影响因子:
1.1
通讯作者:
Kuilin Wu
中科院分区:
文献类型:
--
作者:
Yi Shao;Kuilin Wu
In this paper, we investigate the cyclicity of the period annulus of two classes of cubic isochronous systems.By using the Chebyshev criterion, we prove that the two systems have respectively at most three and four limit cycles produced fromthe period annulus around the isochronous center under cubic perturbations.
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