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| BIFURCATION THEORY OF QUADRATIC DIFFERENTIAL SYSTEMS |
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Citation： |
Ye Yanqian.BIFURCATION THEORY OF QUADRATIC DIFFERENTIAL SYSTEMS[J].Chinese Annals of Mathematics B,1993,14(4):427~434 |
| Page view： 680
Net amount： 809 |
Authors： |
Ye Yanqian; |
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| Abstract： |
This paper deals with the number of limit cycles and bifurcation problem of quadratic differential systems. Under conditions $a<0,b+2l>0,l+1<0$, the author draws three bifurcation diagrams of the system (1.18) below in the (\delta,m) plane, which show that the maximum number of limit cycles around a focus is two in this case. |
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