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Abstract:
给出二次系统Ⅰ的一类相伴系统在奇点O(0,0)的焦点量公式,证明了O至多为2阶细焦点,δlmn=0时系统在O外围至多有一个极限环,从而说明了系统在细焦点外围至多有一个极限环.最后给出了各个奇点的分支情况及几何特征.
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系统科学与数学
ISSN: 1000-0577
CN: 11-2019/O1
Year: 2005
Issue: 4
Volume: 25
Page: 414-422
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 2
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