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1.
带耗散的广义Camassa-Holm方程的吸引子   总被引:1,自引:0,他引:1  
讨论了一类带耗散的广义Camassa-Holm方程.先将方程的解以及初始条件化为积分平均为零,然后建立与原问题相应的周期初值问题近似解的先验估计,由此得到原问题解的存在唯一性,并证明了在H^2per(Ω)中吸引子的存在性.  相似文献   

2.
可以按轨道得到带白噪声的随机广义Ginzburg-Landau方程的唯一解并且能够验证该解可以产生随机系统, 从而证明了该随机系统在H10中存在整体随机吸引子.  相似文献   

3.
耗散Camassa-Holm方程的吸引子   总被引:5,自引:1,他引:5  
本文就一个新的色散水波方程Camassa-Hohn方程的动力学行为进行了研究,讨论了耗散CH方程的解的整体存在,获得了其解半群在H^2中全局吸引子的存在性.  相似文献   

4.
研究了带有乘积白噪音的非自治随机波方程.首先证明解在一个有界球外的一致小性,然后对解在有界的区域内进行分解,得到解的渐近紧性,最后得到了带有乘积白噪音的非自治随机波方程的随机吸引子的存在性.  相似文献   

5.
研究了在H~1(R)中带阻尼的随机浅水波方程的随机吸引子的存在性.主要工具是Fourier限制范数方法以及将解分解为衰减部分与正则部分.  相似文献   

6.
杨墨  富娜 《应用数学和力学》2018,39(9):1068-1080
研究了一类动态边界上的随机波动方程.通过建立一种分解技术,证明了方程随机吸引子的存在性.分解同时表明,该吸引子上的点(或者解)一定满足某种稳定的边界条件.最后,证明了吸引子的结构与分解所得的静态边界上波动方程的随机吸引子相同.  相似文献   

7.
本文考虑带加性噪声的非自治分数阶随机波动方程在无界区域R~n上的渐近行为.首先将随机偏微分方程转化为随机方程,其解产生一个随机动力系统,然后运用分解技术建立该系统的渐近紧性,最后证明随机吸引子的存在性.  相似文献   

8.
讨论了无界区域R~1上的MKdV方程,运用带权空间构造一类紧算子和算子分解的方法,得到该方程在H~2(R~1)上指数吸引子的存在性.  相似文献   

9.
研究了定义在无界区域上具可乘白噪音的随机反应扩散方程的渐近行为.运用一致估计得到了U3-随机吸收集;对方程的解运用渐近优先估计法,建立了相应随机动力系统的渐近紧性,证明了LP-随机吸引子的存在性.该随机吸引子是紧不变集并按LP-范数吸L2中所有缓增集,其中,非线性项/满足p-1(p≥2)阶增长条件.  相似文献   

10.
耗散KDV型方程Cauchy问题的整体吸引子   总被引:2,自引:0,他引:2  
该文对耗散KDV型方程的动力学行为进行了讨论,得到了该方程在H^2(R^1)上存在整体吸引子。  相似文献   

11.
Random attractors of boussinesq equations with multiplicative noise   总被引:1,自引:0,他引:1  
We study the random dynamical system (RDS) generated by the Benald flow problem with multiplicative noise and prove the existence of a compact random attractor for such RDS.  相似文献   

12.
本文首先给出了非自治随机动力系统的随机一致指数吸引子的概念及其存在性判据,其次证明了Rn上的带加法噪声和拟周期外力的FitzHugh-Nagumo系统的随机一致指数吸引子的存在性.  相似文献   

13.
In this paper we prove the existence and uniqueness of global weak solutions to the weakly dissipative Camassa-Holm equation.  相似文献   

14.
We prove new L 2-estimates and regularity results for generalized porous media equations “shifted by” a function-valued Wiener path. To include Wiener paths with merely first spatial (weak) derivates we introduce the notion of “ζ-monotonicity” for the non-linear function in the equation. As a consequence we prove that stochastic porous media equations have global random attractors. In addition, we show that (in particular for the classical stochastic porous media equation) this attractor consists of a random point.  相似文献   

15.
This paper is concerned with the attractor for a viscous two-component generalization of the Camassa-Holm equation subject to an external force, where the viscosity term is given by a second order differential operator. The global existence of solution to the viscous two-component Camassa-Holm equation with the periodic boundary condition is studied. We obtain the compact and bounded absorbing set and the existence of the global attractor in H2×H2 for the viscous two-component Camassa-Holm equation by uniform prior estimate and many inequalities.  相似文献   

16.
Abstract In the present paper, the existence of global attractor for dissipative Hamiltonian amplitude equationgoverning the modulated wave instabilities in E_0 is considered.By a decomposition of solution operator,it isshown that the global attractor in E_0 is actually equal to a global attractor in E_1.  相似文献   

17.
In this paper we consider a stochastic differential inclusion with multiplicative noise. It is shown that it generates a multivalued random dynamical system for which there also exists a global random attractor.  相似文献   

18.
In this paper, we consider the complex Ginzburg-Landau equation (CGL) in three spatial dimensions u_t = ρu + (1 + iϒ)Δu - (1 + iμ) |u|^{2σ} u, qquad(1) u(0, x) = u_0(x), qquad(2) where u is an unknown complex-value function defined in 3+1 dimensional space-time R^{3+1}, Δ is a Laplacian in R³, ρ > 0, ϒ, μ are real parameters. Ω ∈ R³ is a bounded domain. We show that the semigroup S(t) associated with the problem (1), (2) satisfies Lipschitz continuity and the squeezing property for the initial-value problem (1), (2) with the initial-value condition belonging to H²(Ω ), therefore we obtain the existence of exponential attractor.  相似文献   

19.
Exponential Attractor for a Nonlinear Boussinesq Equation   总被引:1,自引:0,他引:1  
This paper is devoted to prove the existence of an exponential attractor for the semiflow generated by a nonlinear Boussinesq equation. We formulate the Boussinesq equation as an abstract equation in the Hilbert space H0^2(0, 1) × L^2(0, 1). The main step in this research is to show that there exists an absorbing set for the solution semiflow in the Hilbert space H0^3(0, 1) × H0^1(0, 1).  相似文献   

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