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Abstract:
研究一类五次系统:dx/dt=-y(ax2+bx+1)+Dx-lx3+mx5 dy/dt=x(ax2+bx+1)我们计算了原点的焦点量,证明了原点至多为二阶细焦点,并且得到了原点是二阶细焦点时系统不存在极限环.
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青岛大学学报(自然科学版)
ISSN: 1006-1037
CN: 37-1245/N
Year: 2010
Issue: 1
Volume: 23
Page: 16-19
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SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 0
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