%0 Journal Article
%T Lie symmetries of discrete Lagrange systems<br>离散Lagrange系统的Lie对称性
%A Shi Shen-Yang
%A Fu Jing-Li
%A Chen Li-Qun
%A <br>施沈阳
%A 傅景礼
%A 陈立群
%J 物理学报
%D 2007
%I 
%X This paper studies the Lie symmetries of discrete Lagrange systems. Based on discrete variational principle, the equations of motion for the discrete systems are established. Definition of Lie symmetry and determining equations for the discrete equations of motion are given. An example is presented to illustrate the application of the results.
%K discrete Lagrange system
%K discrete variational principle
%K Lie symmetry
%K determining equation<br>离散Lagrange系统
%K 离散变分原理
%K Lie对称性
%K 确定方程
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=D17766AE1299FA2C&yid=A732AF04DDA03BB3&vid=014B591DF029732F&iid=B31275AF3241DB2D&sid=3460121FD3CDE493&eid=35BCBF4C79BF0A59&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=29