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Existence and non-existence of global smooth solutions for p-system with relaxation

机译:具有松弛的p系统的整体光滑解的存在和不存在

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摘要

In this paper, we consider the Cauchy problem for p-system with relaxation. Under the assumption that the relaxation time epsilon is sufficiently small, we prove the existence of the global smooth solution to the Cauchy problem with C-1-initial data provided the C-0-norm of the derivative of the initial data is of the order of xi/epsilon. Here xi is a small positive constant. On the other hand, when the initial density has compact support but is not identically zero, we prove the global regular solution for the Cauchy problem does not exist. (C) 2000 Academic Press. [References: 12]
机译:在本文中,我们考虑具有松弛的p系统的柯西问题。在弛豫时间ε足够小的假设下,我们证明了存在C-1初始数据的柯西问题的全局光滑解的存在,前提是初始数据的导数的C-0范数为xi / epsilon。 xi是一个小的正常数。另一方面,当初始密度具有紧致支持但不等于零时,我们证明了柯西问题的全局正则解不存在。 (C)2000学术出版社。 [参考:12]

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