组合KdV与MKdV方程的显式精确解

本文通过直接代数方法与假设方法的一种结合,求出了组合ＫｄＶ和ＭＫｄＶ方程的一些显式精确行波解．     

一类广义KdV方程的孤立波精确解

本文给出求一类广义ＫｄＶ方程的孤立波精确解的方法．     

RLW—Burgers方程的精确解

借助未知函数的变换，ＲＬＷ－Ｂｕｒｇｅｒｓ方程和ＫｄＶ－Ｂｕｒｇｅｒｓ方程化为易于求解的齐次形式的方程，从而得到ＲＬＷ－Ｂｕｒｇｅｒｓ方程和ＫｄＶ－Ｂｕｒｇｅｒｓ方程的精确解。     

组合KdT与MKdV方程的显式精确解

本文通过直接代数方法与假设方法的一种结合,求出了组合ＫｄＶ和ＭＫｄＶ方程的一些显式精确行波解。     

一类广义KdV方程的弧立波精确解

本文给出球一类广义ＫｄＶ方程的弧立波精确解的方法。     

Burgers-KdV混合型方程的显式精确解

本文提出了双参数假设,用直接积分的方法得到了Ｂｕｒｇｅｒｓ－ＫｄＶ方程的显式精确解,分析了解的结构。     

Burgers与组合KdV混合型方程的精确解

该文求出了组合ＫｄＶ方程的渐近值不为零的钟状孤波解和扭状孤波解；求出了Ｂｕｒｇｅｒｓ与组合ＫｄＶ混合型方程ｕｔ＋ａｕｕｘ＋ｂｕ２ｕｘ＋ｒｕ（ｘｘ）＋ｕ（ｘｘｘ）＝０的二类扭状孤波解．作为推论，还求出了波方程ｕ（ｔｔ）－ｋｕ（ｘｘ）＋ｐｕ十ｑｕ２＋ｓｕ３＝０的钟状和扭状孤波解．     

KdV—KSV方程的初值问题

本文证明了ＫｄＶ－ＫＳＶ方程的周期边值问题和Ｃａｕｃｈｙ问题广义解和古典解的整体存在性，正则性及唯一性。     

一类带有非均匀项的广义KdV方程的孤波解

一类带有非均匀项的广义ＫｄＶ方程的孤波解朱佐农（扬州大学农学院基础部，扬州２２５Ｏ０１）－、引言众所周知，ＫｄＶ方程已被广泛研究［１］．从方程（１）的高阶守恒量出发，Ｌａｘ得到第一族高阶ＫｄＶ方程，其５阶形式为：从（２）的守恒量出发，Ｓａｗａｄａ和Ｋ...     

含外力项的广义KdV方程的新自Darboux变换和显式解析解

基于 Ｒｉｃｃａｔｉ形式的 Ｌａｘ对,本文推得了含外力项的广义 ＫｄＶ方程的新自Ｄａｒｂｏｕｘ变换．当应用这个变换时,仅需要做积分,就能获得一系列显示解析解,其中包含类孤波解．这种途径对于寻找非线性发展方程新的具有物理意义的解或许是有用的．     

一类推广的KdV方程的新行波解

本文研究了一类推广的Kd V方程的行波解求解的问题.利用新的G展开法,并借助Mathematica计算软件,获得了该方程的含有多个任意参数的新的行波解,分别为三角函数解、双曲函数解、有理函数解和指数函数解,扩大了该类方程的解的范围.     

求某些非线性偏微分方程特解的一个简洁方法

简单介绍了应用一个简洁的“试探函数法”求解非线性偏微分方程的基本步骤,主要研究了两大类方程,一类是Burgers方程或KdV方程的推广,另一类是具有特殊非线性反应率的Fisher方程.不难看出,这个方法是简洁的,并且可望进一步扩展.     

一般变系数KdV方程的精确解

By asing the nonclassical method of symmetry reductions, the exact solutions for general variable-coefficient KdV equation with dissipative loss and nonuniformity terms are obtained. When the dissipative loss and nonuniformity terms don‘t exist, the multisoliton solutions are found and the corresponding Painleve II type equation for the variable-coefficient KdV equation is given.     

广义KdV方程的若干新的精确解

本文利用守恒律方程等价的概念和求精确解的方法,对广义KdV方程求出了若干新解。     

The bifurcation and exact travelling wave solutions for the modified Benjamin-Bona-Mahoney (mBBM) equation

By using methods from dynamical systems theory, this paper researches the bifurcation and exact travelling wave solutions for the modified Benjamin-Bona-Mahoney (mBBM) equation. Implicit exact parametric representations of all travelling wave solutions as well as some explicit analytic solutions are given. Specially, breaking wave solutions are obtained, which KdV equation does not include.     

Rational Solutions to the KdV Equation in Terms of Particular Polynomials

Here, we construct rational solutions to the KdV equation by particular polynomials. We get the solutions in terms of determinants of the order $n$ for any positive integer $n$, and we call these solutions, solutions of the order $n$. Therefore, we obtain a very efficient method to get rational solutions to the KdV equation, and we can construct explicit solutions very easily. In the following, we present some solutions until order $10$.     

几类非线性发展方程的解析解

研究下列偏微分方程:广义五阶KdV方程,水波方程,Kupershmidt方程,耦合KdV方程。通过引进一个二阶常微分方程,采用不同的ansatzes方法找到了这些问题的解析解。     

Nonautonomous first integrals and general solutions of the KdV‐Burgers and mKdV‐Burgers equations with the source

The method for constructing first integrals and general solutions of nonlinear ordinary differential equations is presented. The method is based on index accounting of the Fuchs indices, which appeared during the Painlevé test of a nonlinear differential equation. The Fuchs indices indicate us the leading members of the first integrals for the origin differential equation. Taking into account the values of the Fuchs indices, we can construct the auxiliary equation, which allows to look for the first integrals of nonlinear differential equations. The method is used to obtain the first integrals and general solutions of the KdV‐Burgers and the mKdV‐Burgers equations with a source. The nonautonomous first integrals in the polynomials form are found. The general solutions of these nonlinear differential equations under at some additional conditions on the parameters of differential equations are also obtained. Illustrations of some solutions of the KdV‐Burgers and the mKdV‐Burgers are given.     

广义KdV方程与广义Burgers方程的精确解

利用试探函数法和直接积分法构造广义KdV方程与广义Burgers方程的新的精确解.     

New exact kink solutions, solitons and periodic form solutions for a combined KdV and Schwarzian KdV equation

In this short letter, new exact solutions including kink solutions, soliton-like solutions and periodic form solutions for a combined version of the potential KdV equation and the Schwarzian KdV equation are obtained using the generalized Riccati equation mapping method.