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1.
具调和振子的非线性Schrodinger方程   总被引:2,自引:0,他引:2  
考虑具调和振子的非线性Schrodinger方程的Cauchy问题,采用Galerkin方法证明了整体强解的存在性,使用能量估计方法证明了整体强解的唯一性。  相似文献   

2.
一类四阶非线性波动方程的初边值问题   总被引:5,自引:0,他引:5  
尚亚东 《应用数学》2000,13(1):7-11
本文研究一类描述非线性粘弹性杆中纵波振动的非线性波动方程的初边值问题,用Galerkin方法证明了其整体强解的存在性,唯一性,最后讨论了解的渐近性质及在一定条件下整体解的不存在性。  相似文献   

3.
本文首先引入高阶Schrodinger方程容许对的概念,进而给出了线性亢介Schrodinger方程解的空间时估计,利用空时估计及非线性函数的估计,证明了高阶非线性Schrodinger方程整体强解的存在唯一性。  相似文献   

4.
半线性拟双曲型积分微分方程的初边值问题和初值问题   总被引:12,自引:3,他引:9  
本文讨论半线性拟双曲型积分微分方程的初边值和初值问题。用积分方程的理论和Galerkin方法证明了问题的整体强解的存在性、唯一性和正则性。  相似文献   

5.
非线性拟抛物型积分微分方程的初边值问题和初值问题   总被引:1,自引:0,他引:1  
本文研究非线性拟抛物积分微分方程的初边值问题和初值问题。运用Galerkin方程结合能量估计证明了问题的整体强解的生存性、唯一性和稳定性,最后在一定条件下讨论了初边值问题整体解的不存在性和爆破问题。  相似文献   

6.
主要研究带有Gilbert阻尼项的Landau-Lifshitz铁磁链方程的柯西问题.当初值的一阶导数适当小时,基于加权能量估计,证明了强解的整体存在性并且给出了解的最优的L2和L∞衰减估计.  相似文献   

7.
考虑粘性系数依赖于密度的一维可压缩双极Navier-Stokes-Poisson(NSP)方程的初边值问题.首先对于一般初值证明了弱解的整体存在性,其次证明了真空状态若存在必在有限时间内消失.进一步,在真空消失之后,整体弱解变成强解并且以指数形式收敛到非真空平衡态.该文把文献[14]的结果推广到NSP的情形.  相似文献   

8.
主要研究了一类带有非牛顿位势的可压缩Navier-Stokes方程:其中粘性系数μ依赖于密度ρ,Φ是非牛顿位势.证明了上述问题的强解的存在性.在相容性条件下,得到了强解的唯一性.  相似文献   

9.
混合边界条件下定常Navier-Stokes方程解的正则性   总被引:1,自引:0,他引:1  
本文考虑混合边界条件下,三维定常Navier-Stokes方程.利用Galerkin逼近方法和差商方法,证明了弱解和强解的存在性.  相似文献   

10.
具色散耗散项的四阶波动方程解的渐近性质   总被引:1,自引:0,他引:1  
研究具色散和耗散项的四阶波动方程的初边值问题.使用乘子法,证明了问题的整体强解在关于非线性项简单而宽泛的假设下,随时间趋于无穷而衰减到零.  相似文献   

11.
In this paper we prove existence of global strong-weak two-dimensional solutions to the Navier-Stokes and heat equations coupled by the external force dependent on temperature and the heat dissipation, respectively. The existence is proved in a bounded domain with the Navier boundary conditions for velocity and the Dirichlet boundary condition for temperature. Next, we prove existence of 3d global strong solutions via stability.  相似文献   

12.
We prove local and global in time existence of non-negative weak solutions to the thin-film equation with absorption and obtain sufficient conditions for extra regularity of these solutions. Moreover, for the class of global strong solutions, we show existence of a trajectory attractor.  相似文献   

13.
In this paper, we consider strong/classical solutions to the 3D compressible Hall-magnetohydrodynamic system. First, we prove the existence of local strong solutions with positive density. Then the existence of global small solutions with small initial data is proved. Optimal time decay rate is also established.  相似文献   

14.
In this paper, we are concerned with strong solutions to the Cauchy problem for the incompressible Magnetohydrodynamic equations. By the Galerkin method, energy method and the domain expansion technique, we prove the local existence of unique strong solutions for general initial data, develop a blow‐up criterion for local strong solutions and prove the global existence of strong solutions under the smallness assumption of initial data. The initial data are assumed to satisfy a natural compatibility condition and allow vacuum to exist. Copyright © 2010 John Wiley & Sons, Ltd.  相似文献   

15.
In this paper, we study the Cauchy problem of the generalized Camassa–Holm equation. Firstly, we prove the existence of the global strong solutions provide the initial data satisfying a certain sign condition. Then, we obtain the existence and the uniqueness of the global weak solutions under the same sign condition of the initial data.  相似文献   

16.
In this work, under global Lipschitz conditions, we prove the existence and uniqueness of strong solutions for multivalued stochastic McK ean-Vlasov equation. Moreover, under continuous and linear growth assumptions, we also obtain the existence of weak solutions.  相似文献   

17.
In this work, under global Lipschitz conditions, we prove the existence and uniqueness of strong solutions for multivalued stochastic McKean-Vlasov equation. Moreover, under continuous and linear growth assumptions, we also obtain the existence of weak solutions.  相似文献   

18.
We study the existence of weak and strong solutions to the initial-boundary value problem for a thin-film type equation with unstable diffusion in multi-dimensional domains. Depending on the initial data and the parameter values, we prove local and global in time existence of nonnegative weak and strong solutions.  相似文献   

19.
We consider a system coupling the incompressible Navier-Stokes equations to the Vlasov-Fokker-Planck equation. The coupling arises from a drag force exerted by each other. We establish existence of global weak solutions for the system in two and three dimensions. Furthermore, we obtain the existence and uniqueness result of global smooth solutions for dimension two. In case of three dimensions, we also prove that strong solutions exist globally in time for the Vlasov-Stokes system.  相似文献   

20.
In this paper we construct a dynamical process (in general, multivalued) generated by the set of solutions of an optimal control problem for the three-dimensional Navier-Stokes system. We prove the existence of a pullback attractor for such multivalued process. Also, we establish the existence of a uniform global attractor containing the pullback attractor. Moreover, under the unproved assumption that strong globally defined solutions of the three-dimensional Navier-Stokes system exist, which guaranties the existence of a global attractor for the corresponding multivalued semiflow, we show that the pullback attractor of the process coincides with the global attractor of the semiflow.  相似文献   

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