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| On the Relative Position of Limit Cycles of a Real Quadratic Differential System |
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Citation： |
Ye Yanqian(叶彦谦）.On the Relative Position of Limit Cycles of a Real Quadratic Differential System[J].Chinese Annals of Mathematics B,1990,11(1):74~83 |
| Page view： 878
Net amount： 1006 |
Authors： |
Ye Yanqian(叶彦谦）; |
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| Abstract： |
The followunh results are proved in this paper
1) If a real quadratic differential system has two strong foci, then around thorn thoro cannot appear (2n, 2m) distribution of non-seini-stable limit cycles, whore n and m are natural numbers.
2) If a real quadratic differential system has'two strong foci of different stability, then around them there cannot appear (2n, 2m) distribution of non-semi-stable limit cycles, whore n and m are natural numbers. |
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