Some New Lie Symmetry Groups of Differential-Difference Equations Obtained from a Simple Direct Method

作     者：ZHI Hong-Yan 

作者机构：School of Mathematics and Computational S~iences China University of Petroleum （East China） Dongying 257061China 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2009年第52卷第9期

页      面：385-388页

核心收录：

学科分类：07[理学] 08[工学] 070104[理学-应用数学] 080101[工学-一般力学与力学基础] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）] 

主　　题：symmetry group differential-difference equation direct method 

摘      要：In this paper,based on the symbolic computing system Maple,the direct method for Lie symmetry groupspresented by Sen-Yue Lou [***.A:***.38 (2005) L129] is extended from the continuous differential equationsto the differential-difference *** the extended method,we study the well-known differential-difference KPequation,KZ equation and (2+1)-dimensional ANNV system,and both the Lie point symmetry groups and the non-Liesymmetry groups are obtained.