应用改进的CK直接方法,得到了(2+1)维Caudrey-Dodd-Gibbon-Kotera-Sawada (CDGKS)方程的对称群定理.利用对称群理论和方程的旧解得到了该方程新的精确解,扩大了解的范围.最后根据对称和共轭方程求出了(2+1)维CDGKS方程的无穷多守恒律.
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