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arXiv 1810.03073math.DS
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具有两条开关线的二次全局中心的极限环分支

Bifurcation of limit cycles from a quadratic global center with two switching lines

Jihua Yang

摘要:

本文将Picard-Fuchs方程方法推广到研究具有两条开关线的扰动微分系统的极限环分支。利用Picard-Fuchs方程,得到了相应的一阶Melnikov函数的详细表达式,该函数可用于确定扰动系统的极限环个数的上界.值得注意的是,我们大大简化了计算,而且这种方法也可用于研究其他具有两条开关线的微分系统的极限环个数。我们的结果还表明,开关线的数量有本质上的影响极限环从一个周期环分叉的数量。

英文摘要:

In this paper, we generalize the Picard-Fuchs equation method to study the bifurcation of limit cycles of perturbed differential systems with two switching lines. We obtain the detailed expression of the corresponding first order Melnikov function which can be used to get the upper bound of the number of limit cycles for the perturbed system by using Picard-Fuchs equation. It is worth noting that we greatly simplify the computations and this method can be applied to study the number of limit cycles of other differential systems with two switching lines. Our results also show that the number of switching lines has essentially impact on the number of limit cycles bifurcating from a period annulus.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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