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Abstract:
研究一类三次Kolmogorov系统:{x=x(A0+A1x-A3x2+A2yA4xy)y=y(-1+x2-y)其中:A0>0,A30,A1,A2,A4不定号.对A10,A2<0,A4<0的情形,利用环域定理、Dulac函数法和张芷芬唯一性定理等手法得到系统(*)在第一象限内极限环存在、不存在及极限环的唯一性的充分条件.
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福州大学学报(自然科学版)
ISSN: 1000-2243
CN: 35-1337/N
Year: 2008
Issue: 6
Volume: 36
Page: 794-799
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SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 1
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