Acta Mathematicae Applicatae Sinica

, Volume 9, Issue 2, pp 155–165 | Cite as

On the structure of integral surfaces near a higher order focus and saddle

  • Zhao Huaizhong 
Article
  • 12 Downloads

Abstract

In this paper the structure of integral surfaces near a higher order focus and saddle, of ordinary differential equations in complex domain is studied by reducing to the normal form system. The formulae of the normal form system are also given.

Keywords

Differential Equation Ordinary Differential Equation Normal Form Form System Math Application 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. [1]
    Qin, Y.X., The Integral Surface Defined by Ordinary Differential Equations (in Chinese), North-West University Press, Xi'an, China, 1985.Google Scholar
  2. [2]
    Qin, Y.X., New Progress on The Integral Surfaces Theory Defined by Ordinary Differential Equations,Chinese Science Bulletin,33 (1988), 1361–1363.Google Scholar
  3. [3]
    Qin, Y.X., Zhao, H.Z., Theory of Singular Points of Ordinary Differential Equations in Complex Domain,Acta Mathematicae Applicatae Sinica (English Series),8(4) (1992), 298–317.Google Scholar

Copyright information

© Science Press, Beijing, China and Allerton Press, Inc., New York, U.S.A. 1993

Authors and Affiliations

  • Zhao Huaizhong 
    • 1
  1. 1.Institute of Applied MathematicsAcademia SinicaBeijingChina

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