机构地区: 中山大学数学与计算科学学院
出 处: 《中山大学学报(自然科学版)》 2008年第1期9-12,共4页
摘 要: 考虑如下具有分布时滞的KdV方程ut=uxxx+6(f*u)ux,其中f为时滞核函数,利用经典的李群理论得到了当时滞核函数f为弱一般核时,时滞KdV方程的三个简单对称及其相应的群不变解。 The Symmetry and Group-invariant solutions are discussed for the following KdV equation with distributed delay ut = uxxx + 6(f* u)ux, wherefis a delay kernel function. By using the classical Lie Group theory to the KdV equation with distributed delay, three symmetries and group-invariant solutions for this delay equation is obtained when the delay kernel is "weak" generic kernel.