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用G′/G扩展法进一步求解(2+1)维Bogoyavlenskii破裂孤子方程和(3+1)维Kadomtsev-Petviashvili(KP)方程，成功得到双曲函数解、三角函数解和有理解.结果表明，该方法对于求解高维非线性偏微分方程同样有效.
通过符号计算准确实现矩阵的Lanczos过程
Lanczos过程 矩阵 符号
2009/10/23
In this paper we expound the principle why the Lanczos procedure of a matrix canbe accurately performed by symbolic computation and give the uses of the accuratelanczos procedure in obtaining the inva...