(2+1)维修正Veselov-Novikov系统的新型折叠子及其弹性碰撞

借助Mathematica软件，在Bcklund变换的基础上采用多线性变量分离(MLVS)方法，得到了(2+1)维修正Veselov-Novikov系统的一个含低维任意函数的新的精确解.选取合适的多值函数，构造出新型的折叠子，对其进行了分类并且研究了各种类型的二折叠子之间的完全弹性碰撞.另外还给出了折叠子与隐形折叠子的相互作用.最后把MLVS方法推广到一个新的(1+1)维非线性系统. 关键词： 修正Veselov-Novikov系统 折叠子 弹性碰撞 变量分离

New foldons and their elastic interactions in the (2+1)-dimensional modified Veselov-Novikov system

By using Mathematica and multi-linear variable separation(MLVS) approach which is based on the Bcklund transformations, a new exact solution which include low dimensional arbitrary functions of the (2+1)-dimensional modified Veselov-Novikov system is obtained. Two new foldons are constructed and their entirely elastic interactions are considered. In additon, foldon and ghoston interactions are derived. MLVS approach is also extended to solve a new (1+1)-dimensional nonlinear system.