On limit cycles near two centres and a double homoclinic loop in Liénard differential system
On limit cycles near two centres and a double homoclinic loop in Liénard differential system
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Liénard 微分系统中两中心附近的极限环和双同宿环
DOI:
10.1016/j.jde.2021.07.032
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发表时间:
2021-11
影响因子:
2.4
通讯作者:
Xiang Zhang
中科院分区:
文献类型:
--
作者:
Lijun Wei;Qingjing Zhang;Xiang Zhang
This paper studies the number of limit cycles in an (m+ 1) th order Liénard differential system, which are bifurcated from the families of periodic orbits near two centres and a double homoclinic loop of a Hamiltonian system with an elliptic Hamiltonian function H= 1 2 y 2− 1 2 x 2+ 1 4 x 4. It is proved that this kind of systems can have at least 7 [m− 2 5]+ 2 r−[r 3]⋅ mod (r+ 1, 3) number of limit cycles, where r= mod (m− 2, 5) and 3≤ m≤ 18 except m= 8. When the Liénard differential system is of centrally symmetric, the lower bound on the number of limit cycles could be 7 [m 6]+ 2 r+[r 2] with r= mod (m 2, 3) and m≤ 124 even. In any of the cases the bounds can be reached with the help of Maple programs. Here mod (a, b) represents the remainder of a divided by b.
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影响因子:
2.4
作者:
Tian Yun;Han Maoan
通讯作者:
Han Maoan
影响因子:
0.4
作者:
Han Mao
通讯作者:
Han Mao
影响因子:
2.4
作者:
F. Dumortier;Chengzhi Li
通讯作者:
F. Dumortier;Chengzhi Li
影响因子:
0.6
作者:
Weigu Li;J. Llibre;Xiang Zhang
通讯作者:
Weigu Li;J. Llibre;Xiang Zhang
DOI:
10.1142/s0218127410028045
发表时间:
2010-11
期刊:
Int. J. Bifurc. Chaos
影响因子:
--
作者:
Junmin Yang;Maoan Han
通讯作者:
Junmin Yang;Maoan Han