Limit Cycle Bifurcations in Perturbations of a Reversible Quadratic System with a Non-rational First Integral

Limit Cycle Bifurcations in Perturbations of a Reversible Quadratic System with a Non-rational First Integral
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具有非有理一阶积分的可逆二次系统扰动的极限环分岔

DOI:
10.1007/s12346-020-00434-w
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发表时间:
2020-11
影响因子:
1.4
通讯作者:
Li Na
Li Na
中科院分区:
数学4区
文献类型:
--
作者:
Xiong Yanqin;Cheng Rong;Li Na

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This paper investigates the Hopf cyclicity of a piecewise smooth quadratic polynomial system by Melnikov function method, whose unperturbed system is a concrete reversible quadratic system with a center at the origin and with a non-rational first integral. By comparing the obtained result for the piecewise case with the result for the smooth case, it shows that the piecewise system can have at least four more limit cycles around the origin than the smooth one.
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