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EXISTENCE OF LIMIT CYCLES FOR A CUBIC KOLMOGOROV SYSTEM WITH A PARABOLIC SOLUTION WHICH DOES NOT CONTACT AND INTERSECT THE COORDINATE AXES
作者姓名:沈聪  沈伯骞
作者单位:Liaoning Police High Academic School,Dalian 116038,Dept of Math Liaoning Normal University Dalian 116029
摘    要:This paper is concerned with a cubic Kolmogorov system with a parabolicsolution which does not contact and intersect the coordinates. The conclusionis that such a system may possess limit cycles.

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EXISTENCE OF LIMIT CYCLES FOR A CUBICKOLMOGOROV SYSTEM WITH A PARABOLICSOLUTION WHICH DOES NOT CONTACT AND INTERSECT THE COORDINATE AXES
Shen Cong,Shen Boqian Liaoning Police High Academic School,Dalian Dept of Math Liaoning Normal University Dalian.EXISTENCE OF LIMIT CYCLES FOR A CUBIC KOLMOGOROV SYSTEM WITH A PARABOLIC SOLUTION WHICH DOES NOT CONTACT AND INTERSECT THE COORDINATE AXES[J].微分方程年刊(英文版),2004,20(2):168-172.
Authors:Shen Cong  Shen Boqian Liaoning Police High Academic School  Dalian Dept of Math Liaoning Normal University Dalian
Institution:Shen Cong,Shen Boqian Liaoning Police High Academic School,Dalian 116038 Dept of Math Liaoning Normal University Dalian 116029
Abstract:This paper is concerned with a cubic Kolmogorov system with a parabolic solution which does not contact and intersect the coordinates. The conclusion is that such a system may possess limit cycles.
Keywords:cubic Kolmogorov system  parabolic solution  limt cycle
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