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The Limit Cycle of a Class of 2n-degree Kolmogorov's System
Author(s): ZHANG Li, HUANG Wen-tao
Pages: 180-
183
Year: 2006
Issue:
3
Journal: GUANGXI SCIENCES
Keyword: Kolmogorov系统; 极限环; 闭轨;
Abstract: 研究一类2n次Kolmogorov系统{dx/dt=x(a0-a1x+a3x3-a4x4+a5xy2n-1),dy/dt=y(b1x2n-b2),极限环的存在性问题.主要讨论a5>0和a5<0两种情形.当a5>0时,系统在第一象限内不存在极限环;当a5<0时,得到了平衡点的稳定性态,系统无闭轨的充分条件以及在第一象限内存在稳定极限环的条件.
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