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author:

许君雁 (许君雁.) [1]

Indexed by:

CQVIP PKU CSCD

Abstract:

研究一类三次Kolmogorov系统:{=x(A0+A1x-A3x2+A2y+A4xy)=y(-1+x2-y)(*)其中:A0〉0,A3〉0,A1,A2,A4不定号.对A1〉0,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.

Keyword:

KOLMOGOROV系统 LIENARD方程 唯一性 存在性 极限环

Community:

  • [ 1 ] 福州大学数学与计算机科学学院,福建福州350002

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Source :

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

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count: -1

30 Days PV: 2

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