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POINTWISE ESTIMATES OF SOLUTIONS FOR THE EULER-POISSON EQUATIONS WITH DAMPING IN MULTI-DIMENSIONS

机译:多维阻尼Euler-Poisson方程解的点估计

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摘要

The global existence and pointwise estimates of the Cauchy problem for the Euler-Poisson equation with damping in multi-dimensions are considered. Based on the analysis of Green function, and using the special structure of the system together with weighted energy method, we obtain the global existence of the classical solution. What's more important, is that we derive a detailed, pointwise description of asymptotic behavior of the solutions of the Cauchy problem. Then we obtain the optimal L~p(R~n) (p > n-1) convergence rate of the solutions.
机译:考虑了多维阻尼的欧拉-泊松方程柯西问题的整体存在性和逐点估计。在分析格林函数的基础上,结合系统的特殊结构和加权能量法,我们得到了经典解的整体存在性。更重要的是,我们得出了柯西问题解的渐近行为的详细的,逐点的描述。然后我们获得解的最佳L〜p(R〜n)(p> n / n-1)收敛速度。

著录项

  • 来源
    《Discrete and continuous dynamical systems》 |2010年第3期|P.1101-1117|共17页
  • 作者

    Zhigang Wu; Weike Wang;

  • 作者单位

    Department of Mathematics Shanghai Jiao Tong University Shanghai 200240, China;

    Department of Mathematics Shanghai Jiao Tong University Shanghai 200240, China;

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  • 正文语种 eng
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