Wick型随机(2+1)维Broer-Kaup方程的Bcklund变换和白噪声泛函解(英文)

本文对(2+1)维变系数Broer-Kaup方程和 wick型随机(2+1)维Broer-Kaup方程进行了研究,利用 Hermite变换、齐次平衡法以及tanh函数法给出了wick型随机(2+1)维Broer-Kaup方程的Bcklund变换和白噪声泛函解.     

Wick型随机(2+1)维Broer-Kaup方程的B(a)cklund变换和白噪声泛函解

本文对(2+1)维变系数Broer-Kaup方程和wick型随机(2+1)维Broer-Kaup方程进行了研究,利用Hermite变换、齐次平衡法以及tanh函数法给出了wick型随机(2+1)维Broer-Kaup方程的B(a)cklund变换和白噪声泛函解.     

利用Hirota双线性法求解一类非线性发展方程

利用hirota双线性法和Hopf-Cole变换,得到(3+1)维广义KP方程、广义(3+1)维浅水波方程、(1+1)维Boussinesq方程、(2+1)维Nizhnik方程的精确解,并做出一部分解的图形,进一步研究解的结构和性质.实践证明,方法对于研究非线性发展方程具有十分重要的作用.     

Boussinesq方程组在Besov空间中局部解的存在性和延拓准则

本文研究二维无粘性Boussinesq方程组在超临界Besov空间B_(p,q)~s(R~2),s>1+2/p,1相似文献   

具有非线性范数型源的反应扩散方程组解的爆破性质

本文研究了一类带有非线性范数型源的反应扩散方程组u_t=?u~m+a‖u~(p1)v~(q1)‖_α~(r1),v_t=?v~n+b‖v~(p2)w~(q2)‖_β~(r2),w_t=?w~h+c‖w~(p3)u~(q3)‖_γ~(r3)在齐次Dirichlet边界条件下解的爆破问题.利用上下解方法和构造辅助函数的技巧,得到了方程组解的整体存在与爆破的准则,将当前的一些研究结果推广到更复杂的情形.     

(2+1)维Broer-Kaup-Kupershmidt方程组的行波解

借助于计算机代数系统Mathematica,利用推广的简单方程方法构造了(2+1)维Broer-Kaup-Kupershmidt方程组的新的精确行波解,分别以含有双参数的用双曲函数,三角函数和有理函数表示,其中双曲函数表.示的行波解中参数取特殊值时可得到文献已有的孤波解.方法也适用于其它非线性发展方程(组).     

(2+1)维耦合MKP型方程的分解及其显式解

利用(2+1)维耦合MKP型方程与它分解后的(1+1)维DNLS方程之间的关系,用达布变换的方法求出(1+1)维DNLS方程的显式解,进而得到(2+1)维耦合MKP型方程的显式解.     

(2+1)维色散长波方程新的类孤子解

通过一个简单的变换,将(2+1)维色散长波方程简化为人们熟知的带强迫项Burgers方程,借助Mathematica软件,利用齐次平衡原则和变系数投影Riccati方程法,求出了(2+1)维色散长波方程新的精确解.     

(2+1)维modified Zakharov-Kuznetsov方程的复合型新解

给出函数变换,变量分离形式解与第一种椭圆方程相结合的方法,构造了(2+1)维modified Zakharov-Kuznetsov(m ZK)方程的多种复合型新解.步骤一,给出两种函数变换,将(2+1)维m ZK方程转化为能够获得变量分离解的非线性发展方程.步骤二,给出非线性发展方程的变量分离形式解,通过第一种椭圆方程及其相关结论,构造了(2+1)维m ZK方程的双孤子解和双周期解等复合型新解.     

广义随机KP方程的椭圆周期解

利用Hermite变换和Jacobi椭圆函数展开法研究(2+1)-维广义随机Kadomtsev-Petviashvili方程,并给出了它的随机椭圆周期解及随机孤立波解.     

Backlund Transformation and Exact Solution to Kadomtsev-Petviashvili Equation with Variable Coefficients

By using the homogeneous balance principle, we derive a Backlund transformation (BT) to (3+1)-dimensionaI Kadomtsev-Petviashvili (K-P) equation with variable coefficients if the variable coefficients are linearly dependent. Based on the BT, the exact solution of the (3+1)-dimensional K-P equation is given. By the same method, we derive a BT and the solution to (2+1)-dimensional K-P equation. The variable coefficients can change the amplitude of solitary wave, but cannot change the form of solitary wave.     

Bi-solitons, breather solution family and rogue waves for the (2+1)-dimensional nonlinear Schr\"{o}dinger equation

In this paper, bi-solitons, breather solution family and rogue waves for the (2+1)-Dimensional nonlinear Schr\"{o}dinger equations are obtained by using Exp-function method. These solutions derived from one unified formula which is solution of the standard (1+1) dimension nonlinear Schr\"{o}dinger equation. Further, based on the solution obtained by other authors, higher-order rational rogue wave solution are obtained by using the similarity transformation. These results greatly enriched the diversity of wave structures for the (2+1)-dimensional nonlinear Schr\"{o}dinger equations     

一类非线性发展方程的精确解

利用hirota双线性法,得到(3+1)维孤子方程、(3+1)维KP-Boussinesq方程、(2+1)维修正Caudrey-Dodd-Gibbon-Kotera-S awada方程、Hirota-Satsuma浅水波方程的精确解,并做出一部分解的图形,进一步研究解的结构和性质.     

A new note on exact complex travelling wave solutions for (2+1)-dimensional B-type Kadomtsev-Petviashvili equation

Exact solutions of the (2+1)-dimensional Kadomtsev-Petviashvili by Zhang [Huiqun Zhang, A note on exact complex travelling wave solutions for (2+1)-dimensional B-type Kadomtsev-Petviashvili equation, Appl. Math. Comput. 216 (2010) 2771-2777] are considered. To look for “new types of exact solutions travelling wave solutions” of equation Zhang has used the G′/G-expansion method. We demonstrate that there is the general solution for the reduction by Zhang from the (2+1)-dimensional Kadomtsev-Petviashvili equation and all solutions by Zhang are found as partial cases from the general solution.     

New multisoliton solutions of the (2+1)-dimensional dispersive long wave equations

IntroductionSoliton is a complicated mathematical structure based on the nonlinear evolution equation.(1+ 1)-dimensional soliton and solitary wave solutions have been studied we1l and widely appliedto many physics fields like the condense matter physics, fluid mechanics, plasma physics, optics,etc. However, to find some exact physically significant soliton solutions in (2+l)-dimensions ismuch more difficult than in (1+1)-dimensions. Recently, by using some different approashes,one special type…     

一个1+1维Boussinesq系统的Darboux变换及其应用

主要考虑1+1维Boussinesq系统的一个Darboux变换,反复利用该Darboux变换,可以从该系统的一个已知解出发,通过代数运算和求导运算得到系统的新解.     

Periodic structures based on variable separation solution of the (2+1)-dimensional Boiti–Leon–Pempinelli equation

In this paper, firstly, a new mapping method is used to obtain the variable separation solutions, with two arbitrary functions, of the (2+1)-dimensional Boiti–Leon–Pempinelli equation. From the variable separation solution and by selecting appropriate functions, some novel Jacobian elliptic wave structure and periodic wave evolutional behaviors are investigated.     

Variable-coefficient projective Riccati equation method and its application to a new (2 + 1)-dimensional simplified generalized Broer–Kaup system

In this paper, based on a new intermediate transformation, a variable-coefficient projective Riccati equation method is proposed. Being concise and straightforward, it is applied to a new (2 + 1)-dimensional simplified generalized Broer–Kaup (SGBK) system. As a result, several new families of exact soliton-like solutions are obtained, beyond the travelling wave. When imposing some condition on them, the new exact solitary wave solutions of the (2 + 1)-dimensional SGBK system are given. The method can be applied to other nonlinear evolution equations in mathematical physics.     

Bcklund transformation, non-local symmetry and exact solutions for (2+1)-dimensional variable coefficient generalized KP equations

IntroductionDuring the study of water wave, many completely iategrable models were derived, such as(1+1)-dimensional KdV equation, MKdV equation, (2+1)-dimensional KdV equation, Boussinesq equation and WBK equations etc. Many properties of these models had been researched,such as BAcklund transformation (BT), converse rules, N-soliton solutions and Painleve property etc.II--8]. In this paper, we would like to consider (2+1)-dimensional variable coefficientgeneralized KP equation which …