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arXiv 1906.08503math.AP
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时间分数阶扩散方程:解的概念、正则性和长时间行为

Time fractional diffusion equations: solution concepts, regularity and long-time behaviour

Rico Zacher

摘要:

本文综述了时间分数阶扩散方程的各种分析结果。我们描述的方法,通过抽象的Volterra方程和收集结果的强解的$L_p$意义。我们进一步讨论了具有粗糙系数的方程的弱解概念,并介绍了此类方程的De Giorgi-Nash-Moser理论的最新发展。最后一部分总结了最近的结果的长期行为的解决方案,这是显着不同的热方程的情况下。

英文摘要:

In this paper we give a survey of results on various analytical aspects of time fractional diffusion equations. We describe the approach via abstract Volterra equations and collect results on strong solutions in the $L_p$ sense. We further discuss the concept of weak solutions for equations with rough coefficients and give an account of recent developments towards a De Giorgi-Nash-Moser theory for such equations. The last part summarizes recent results on the long-time behaviour of solutions, which turns out to be significantly different from that in the heat equation case.

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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