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Some Notes on the Positive Definite Problem of a Binary Quartic Form

Some Notes on the Positive Definite Problem of a Binary Quartic Form
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摘要 In this paper, we discuss the positive definite problem of a binary quartic form and obtain a necessary and sufficient condition. In addition we give two examples to show that there are some errors in the paper [1].
出处 《Chinese Quarterly Journal of Mathematics》 CSCD 2003年第1期68-73,共6页 数学季刊(英文版)
关键词 positive definite binary quartic form quartic equation 正定问题 二元四次形式 多项式
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参考文献5

  • 1凌生智.A Remark on the Positive Definite Problem of a Binary Quartic Form[J].Chinese Quarterly Journal of Mathematics,1999,14(1):43-46. 被引量:4
  • 2QIN Yuan-xun,et al. The Movement Stability of Dynamics with Time-shift[M].Beijing:Academic Press,1983.
  • 3CHEN Qing-yi. General linear partial differential equations[M]. Beijing:HigherEducation Press,1987.
  • 4HOMANDER L. The Analysis of Linear Partial Differential Operator Ⅲ[M]. BerlinHeidelberg:Springer-Verlag,1985.
  • 5QIU Wei-sheng. Higher Algebra[M]. Beijing:Higher Educataion Press,1996.

二级参考文献2

  • 1Chen Qingyi,Generallinear Partial Differential Equations,1987年
  • 2Qin Yuanxun,The Movem Entstability of Dynamics with Time-shift,1963年

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