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一个非线性偏微分方程的对称及守恒律 被引量:1

Symmetry and conservation laws of a nonlinear partial differential equations
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摘要 目的研究一个非线性偏微分方程的对称和守恒律。方法通过李群的方法,得到了非线性偏微分方程的对称,由于对称与守恒律之间的密切关系,找到了此方程的守恒律。结果得到ut=αu2xx+βuxuxx+γ(uuxx-2/3u2x)守恒律。结论方程ut=αu2xx+βuxuxx+γ(uuxx-2/3u2x)具有无穷多守恒律。 Aim To discuss the symmetry and conservation laws of a nonlinear partial differential equations. Meth- ods By using the Lie method, symmetry has been identified for the nonlinear partial differential equations, and due to the close relationship between the symmetry and conservation laws, the conservation laws of the equation hasbeen obtained.
作者 王珍 鱼翔
机构地区 西北大学数学系
出处 《西北大学学报(自然科学版)》 CAS CSCD 北大核心 2013年第1期7-9,共3页 Journal of Northwest University(Natural Science Edition)
基金 国家自然科学基金资助项目(10671156)
关键词 对称 非线性偏微分方程 守恒律 symmetry nonlinear partial differential equation conservation laws
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  • 2BLUMAN G W,KUMEI S. Symmetries and Differential Equations[M].Berlin:Springer Velag,1989.
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