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LIMIT CYCLES AND INVARIANT CENTERS FOR AN EXTENDED KUKLES SYSTEM
被引:1
|作者:
Liu, Zhenhai
[1
,2
]
Szanto, Ivan
[3
]
机构:
[1] Guangxi Univ Nationalities, Guangxi Key Lab Univ Optimizat Control & Engn Cal, Nanning 530006, Guangxi, Peoples R China
[2] Guangxi Univ Nationalities, Coll Sci, Nanning 530006, Guangxi, Peoples R China
[3] Univ Tecn Federico Santa Maria, Dept Matemat, Casilla 110-5, Valparaiso, Chile
关键词:
limit cycle;
center;
bifurcation;
D O I:
10.18514/MMN.2017.2043
中图分类号:
O1 [数学];
学科分类号:
0701 ;
070101 ;
摘要:
A class of polynomial systems of odd degree with limit cycles, invariant centers and invariant straight lines, is examined. The limit cycles can be obtain as a bifurcation of a non hyperbolic focus at the origin as Hopf bifurcations. We will also obtain the necessary and sufficient conditions for the critical point at the interior of bounded region to be a center.
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页码:947 / 952
页数:6
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