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By using the homogeneous balance principle(HBP),we derive a B■cklund trans- formation(BT)to the generalized dispersive long wave equation with variable coefficients. Based on the BT,we give many kinds of the exact solutions of the equatioh,such as,single solitary solutions,multi-soliton solutions and generalized exact solutions. 相似文献
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该文首先推广了新近提出的F -展开法,利用该方法导出了变系数KdV和mKdV方程 的类椭圆函数解;并在极限的情况下,得到变系数KdV和 mKdV方程变波速和变波长的类孤子解以及其他形式解. 相似文献
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An extended F-expansion method for finding periodic wave solutions of nonlinear evolution equations in mathematical physics is presented, which can be thought of as a concentration of extended Jacobi elliptic function expansion method proposed more recently. By using the homogeneous balance principle and the extended F-expansion, more periodic wave solutions expressed by Jacobi elliptic functions for the coupled KdV equations are derived. In the limit cases, the solitary wave solutions and the other type of travelling wave solutions for the system are also obtained. 相似文献
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王明亮 《数学物理学报(B辑英文版)》1988,(1)
First, all possible traveling wave solutions of the Boussinesq equations in shallow water theory are discussed. It is shown that these solutions are periodic waves, convex solitary waves and concave solitary waves. Second, by using a reductive perturbation method, shallow water equation with a small damping term have been reduced to a single KdV-Burgers equation, from which the approximate solution of the original equations can be expressed. 相似文献
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SYMMETRIES, BāCKLUND TRANSFORMATIONS AND BOUNDARY-INITIAL VALUE PROBLEMS FOR NONLINEAR CHROMATOGRAPH
王明亮 《数学物理学报(B辑英文版)》1995,(2)
SYMMETRIES,B■CKLUNDTRANSFORMATIONSANDBOUNDARY-INITIALVALUEPROBLEMSFORNONLINEARCHROMATOGRAPHYEQUATIONWangMingliang(王明亮)(Dept.o... 相似文献
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本文证明Burgers型方程初值问题的解在L2意义上的稳定性、唯一性;给出该方程存在扭状孤波解的条件及求扭状孤波解的方法。并指出Burgers型方程不存在钟状孤波解。 相似文献
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The periodic wave solutions expressed by Jacobi elliptic functions for the generalized Nizhnik-Novikov-Veselov equation are obtained using the F-expansion method proposed recently. In the limiting cases, the solitary wave solutions and other types of travelling wave solutions for the system are obtained. 相似文献