[1]桑波.两类三次微分系统的中心焦点问题[J].南京师大学报(自然科学版),2012,35(02):16-21.
Sang Bo.The Center-Focus Problems for Two Classes of Cubic Systems[J].Journal of Nanjing Normal University(Natural Science Edition),2012,35(02):16-21.
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两类三次微分系统的中心焦点问题()
《南京师大学报(自然科学版)》[ISSN:1001-4616/CN:32-1239/N]
- 卷:
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第35卷
- 期数:
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2012年02期
- 页码:
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16-21
- 栏目:
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数学
- 出版日期:
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2012-06-20
文章信息/Info
- Title:
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The Center-Focus Problems for Two Classes of Cubic Systems
- 作者:
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桑波;
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聊城大学数学科学学院,山东聊城252059
- Author(s):
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Sang Bo
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School of Mathematics Sciences,Liaocheng University,Liaocheng 252059,China
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- 关键词:
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奇点量; 焦点量; 三次系统; 中心条件
- Keywords:
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singular point value; focal value; cubic systems; center conditions
- 分类号:
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O175
- 摘要:
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本文在奇点量方法的基础上,以Grbner基为工具,提出了焦点量序列的约化算法;作为应用,讨论了两类三次系统的中心焦点问题,给出了系统具有中心的若干非平凡条件.
- Abstract:
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A full-reduction algorithm using Grbner Basis is proposed for the sequence of focal values based on the method of singular point values. As applications,the center-focus problems of two classes of cubic systems are considered and several non-trivial center conditions are obtained.
参考文献/References:
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[7] Wang D. A recursive formula and its application to computations of normal forms and focal values[C]/ / S-T Liao. Dynamical Systems. Singapore: World Sci Publ,1993: 238-247.
[8] Yu P. Computation of normal forms via a perturbation technique[J]. J Sound & Vib,1998, 211( 1) : 19-38.
[9] 陈海波. 平面多项式微分系统中心焦点判定与赤道极限环分支[D]. 长沙: 中南大学数学科学与计算技术学院, 2003.
[10] Chavarriga J,Gacía I A,Giné J. On integrability of differential equations defined by the sum of homogeneous vector fields with degenerate infinity[J]. Int J Bifur Chaos Appl Sci Eng, 2001, 11( 3) : 711-722.
备注/Memo
- 备注/Memo:
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基金项目: 国家自然科学基金( 10871214) .
通讯联系人: 桑波,博士,副教授,研究方向: 常微分方程定性理论和符号计算. E-mail: sangbopress@126. com
更新日期/Last Update:
2013-03-11