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新疆大学数学系
Published:1991
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[1]郭治中.多项式系统x=P_(2n)+1(x,y),y=Q_(2n)+1(x,y) C_k(1≤k≤2n+1)之实现[J].新疆大学学报(自然科学版),1991(02):19-21.
郭治中. 多项式系统x=P2n+1(x,y),y=Q2n+1(x,y)Ck(1≤k≤2n+1)之实现[J]. Journal of Xinjiang University (Natural Science Edition in Chinese and English), 1991, (2).
[1]郭治中.多项式系统x=P_(2n)+1(x,y),y=Q_(2n)+1(x,y) C_k(1≤k≤2n+1)之实现[J].新疆大学学报(自然科学版),1991(02):19-21. DOI:
郭治中. 多项式系统x=P2n+1(x,y),y=Q2n+1(x,y)Ck(1≤k≤2n+1)之实现[J]. Journal of Xinjiang University (Natural Science Edition in Chinese and English), 1991, (2). DOI:
本文对Lienard系统给出了同时包含多个奇点的极限环的存在性的一组充分条件。并证明了2n+1次多项式系统可分别实现同时包含1
2
…
2n+1个奇点的极限环
给出了实现的一般方法。
In this paper
we consider the system x=y-F(x) y=g(x) and give a set of sufficient conditions of the existence of limit cycle including some singular points
and prove that the polynomial system of order 2n+1 x=P2n+1(x
y) y=Q2n+1(x
y) can respectively realize the limit cycle including 1
…2n+1 singular points
the general method is given.
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