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(2+2)维非线性微分-差分mToda方程的内禀对称,相似约化和精确解
Intrinsical symmetries,similarity reductions and exactsolutions of the (2+2)-dimensional nonlinear differential-difference mToda equation
【摘要】 把内禀对称群分析方法推广应用于(2+2)维非线性微分-差分mToda方程.通过得到的对称,解相应的特征方程,对该方程进行了相似约化.最后通过反变换,构造了几类精确解。
【Abstract】 In this paper,the intrinsical symmetry group analysis method is extended to solve the(2+2)-dimensional nonlinear differential-difference mToda equation.From the symmetries and solving the correspond-ing characteristic equation,this equation is similarity reduced.Finally,some exact solutions are constructed by inverse transformations.
【关键词】 mToda方程;
对称;
相似约化;
精确解;
【Key words】 mToda equation; symmetry; similarity reduction; exact solution;
【Key words】 mToda equation; symmetry; similarity reduction; exact solution;
【基金】 浙江省自然科学基金(Y6090359,Y090383);陕西教育厅专项基金(09JK770);国家博士后基金(20090461305)
- 【文献出处】 纯粹数学与应用数学 ,Pure and Applied Mathematics , 编辑部邮箱 ,2010年06期
- 【分类号】O175.29
- 【下载频次】51