Derivation of Lagrangian density for the “good” Boussinesq equation and multisymplectic disretizations

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摘要

The Lagrangian density for the “good” Boussinesq equation is derived by introducing a new variable in this paper. Based on this density, we consider the corresponding multisymplectic formulation and discretizations. Numerical experiments are also reported.

论文关键词：70S05,35Q51,Lagrangian density,“Good” Boussinesq equation,Multisymplectic,Soliton solution

论文评审过程：Available online 8 June 2008.

论文官网地址：https://doi.org/10.1016/j.amc.2008.06.003