Acta mathematica scientia,Series A ›› 1999, Vol. 19 ›› Issue (3): 326-332.

• Articles • Previous Articles     Next Articles

Wuwen-tsun-Differential Charateristic Algorithm of Symmetry Vectors of Partial Differential Equations

  

  1. basic science department of inner mongolia polytechnic university|huhhot 010062
  • Online:1999-08-03 Published:1999-08-03

Abstract:

 In this paper,The Wu-differential characteristic set algorithm for computations symmetries of partial differential equations(PDEs) and the united theoretic framework for determination of classical and nonclassical symmetries of PDEs are put forwarded.The algorithm always yield all Determining equatins  (D.Es) of symmetry of the considering   PDEs and makes the“superlargescale”D.Es equivalently  reduce to“smallerscale” set of differential  equaitons and therefore significantly  decrease the computational efforts of  solving D.Es.Also a principle of Mechanical symmetry computing and testing of PDEs'symmetry is given.As an application of our algorithm,completely nonclassical symmetries of Burgers equation are calculated.

Key words: Wumethod, Characteristicset, Symmetries, Differentialequaitons

CLC Number: 

  •  35A
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