期刊论文

Lv, Na

Lv, N (reprint author), Dalian Univ Technol, Sch Math Sci, Dalian 116024, Peoples R China.

Mei, Jianqin,Guo, Qilong,Zhang, Hongqing

2011-02-01

INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS

SCIE

J

8

1

79-85

0219-8878

Lie symmetry; differential-difference equation; geometric approach; Kac-Moody-Virasoro algebra

We obtain the Lie symmetries of two (2+1)-dimensional differential-difference equations based on the extended Harrison and Estabrook's geometric approach that is extended from the continuous differential equations to the differential-difference equations. Moreover, it is shown that both of the two equations possess a Kac-Moody-Virasoro symmetry algebra.