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LamDe' function and invariants of multi-order exact solutions among nonline ar evolution equations

Liu Shi-Kuo Chen Hua Fu Zun-Tao Liu Shi-Da

LamDe' function and invariants of multi-order exact solutions among nonline ar evolution equations

Liu Shi-Kuo, Chen Hua, Fu Zun-Tao, Liu Shi-Da
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  • PDF Downloads:  577
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Publishing process
  • Received Date:  19 November 2002
  • Accepted Date:  30 December 2002
  • Published Online:  20 August 2003

LamDe' function and invariants of multi-order exact solutions among nonline ar evolution equations

  • 1. 北京大学物理学院,北京 100871

Abstract: Applying the perturbation method, the nonlinear evolution equations are expanded as multi-order approximate equations. And based on Lam equation and Lam function, these multi-order approximate equations can be solved by Jacobi elliptic function expansion method, where multi-order exact solutions of nonlinear evol ution equations are derived. Then the invariants of the multi-order exact soluti ons are found among different nonlinear evolution equations.

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