| 具有两组平行积分直线的三次系统 |
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| 引用本文： | 裴世田.具有两组平行积分直线的三次系统[J].哈尔滨师范大学自然科学学报,1994,10(2):7-9. |
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| 作者姓名： | 裴世田 |
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| 作者单位： | 绥化师范专科学校 |
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| 摘 要： | 本文研究一类具有两组平等积分直线的三次系统。给出了极限环不存在性的条件。给出了这样的系统可以存在极限环的例子。
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| 关 键 词： | 三次系统 极限环 奇环 积分直线 |
CLASS OF CUBIC SYSTEM WITH TOW PAIR PARALLEL INTEGRAL LINES |
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| Pei Shitian.CLASS OF CUBIC SYSTEM WITH TOW PAIR PARALLEL INTEGRAL LINES[J].Natural Science Journal of Harbin Normal University,1994,10(2):7-9. |
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| Authors: | Pei Shitian |
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| Institution: | Suihua TCachcrs CollCge |
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| Abstract: | In this paper,we study a Class of cubic systems with tow pair parallel integral lines, give some conditions of the nonexistencc of the limit cycle. We also give the example of such systems that can have at least a limit cycle. |
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| Keywords: | Limit cycle singular ring function divining |
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