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arXiv 1302.7219math.AP
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非局部多孔介质方程:Barenblatt剖面和其他弱解

Nonlocal porous medium equation: Barenblatt profiles and other weak solutions

Piotr Biler, Cyril Imbert, Grzegorz Karch

摘要:

考虑一个退化的非线性非局部发展方程,它可以理解为一个多孔介质方程,其压力规律是非线性的和非局部的。证明了相应的Cauchy问题变号弱解的存在性。此外,我们构造了显式的紧支撑自相似解,推广了经典多孔介质方程的著名解--Barenblatt剖面。

英文摘要:

A degenerate nonlinear nonlocal evolution equation is considered; it can be understood as a porous medium equation whose pressure law is nonlinear and nonlocal. We show the existence of sign changing weak solutions to the corresponding Cauchy problem. Moreover, we construct explicit compactly supported self-similar solutions which generalize Barenblatt profiles --- the well-known solutions of the classical porous medium equation.

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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