摘要
<正> The concept of approximate generalized conditional symmetry(AGCS)for the perturbed evolution equa-tions is introduced,and how to derive approximate conditional invariant solutions to the perturbed equations via theirAGCSs is illustrated with examples.
The concept of approximate generalized conditional symmetry （AGCS） for the perturbed evolution equations is introduced, and how to derive approximate conditional invariant solutions to the perturbed equations via their A GCSs is illustrated with examples.
基金
The project supported by National Natural Science Foundation of China under Grant No. 10447007, the China Postdoctoral Science Foundation, and the Natural Science Foundation of Shanxi Province under Grant No. 2005A13
关键词
摄动进化方程
近似广义条件对称性
近似条件不变解
非线性系统
perturbed evolution equation, approximate generalized conditional symmetry, approximate con ditional invariant solution
