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arXiv 1402.3640math.AP
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有无自引力三维可压缩Euler方程物理真空运动的适定性

Well-Posedness for the Motion of Physical Vacuum of the Three-dimensional Compressible Euler Equations with or without Self-Gravitation

Tao Luo, Zhouping Xin, Huihui Zeng

摘要:

本文讨论了有无自引力作用下可压缩欧拉方程组的物理真空运动的适定性理论。首先证明了三维一般运动的经典解的一般唯一性定理。第二,对于球对称运动,在不施加一阶导数在对称中心为零的协调条件的情况下,在一个比三阶导数少的泛函空间中建立了一个新的局部时间存在性理论,通过构造合适的权值和截断函数,在\cite{10',7,16'}中计算二维运动,真空边界

英文摘要:

This paper concerns the well-posedness theory of the motion of physical vacuum for the compressible Euler equations with or without self-gravitation. First, a general uniqueness theorem of classical solutions is proved for the three dimensional general motion. Second, for the spherically symmetric motions, without imposing the compatibility condition of the first derivative being zero at the center of symmetry, a new local-in-time existence theory is established in a functional space involving less derivatives than those constructed for three-dimensional motions in \cite{10',7,16'} by constructing suitable weights and cutoff functions featuring the behavior of solutions near both the center of the symmetry and the moving vacuum boundary.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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