摘要
The group classification is carried out on the nonlinear wave equation utt = f（x,u, ux）uzz ＋ g（x,u,uz） by using the preliminary group classification approach. The generators of equivalence group are determined and the corresponding reduced forms are obtained. The result of the work is shown in table form.
基金
Supported by NSF-China Grant 10671156
NSF of Shaanxi Province of China (SJ08A05)
NWU Graduate Innovation and Creativity Funds under Grant No.09YZZ56
