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LIMIT CYCLES FOR A CLASS OF DIFFERENTIAL SYSTEM WITH POSITIVE DEFINITE POLYNOMIAL 被引量:3

LIMIT CYCLES FOR A CLASS OF DIFFERENTIAL SYSTEM WITH POSITIVE DEFINITE POLYNOMIAL
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摘要 In this paper we consider a class of differential systems with positive definite polynomial having exactly one and two limit cycles. Such a system is more extensive than paper [1,2]. In this paper we consider a class of differential systems with positive definite polynomial having exactly one and two limit cycles. Such a system is more extensive than paper [1,2].
作者 Zhang Weide
出处 《Annals of Differential Equations》 2007年第2期234-242,共9页 微分方程年刊(英文版)
关键词 exactly one or two limit cycles positive definite polynonnal exactly one or two limit cycles, positive definite polynonnal
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参考文献12

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二级参考文献4

  • 1张芷芬,微分程定性理论,1985年
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