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arXiv 2511.04885math.AP
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次扩散型方程解的表示公式、正则性与衰减性

Representation formula, regularity and decay of solutions for sub-diffusion type equations

Università degli studi di Torino(都灵大学);Università Telematica Universitas Mercatorum(Mercatorum远程大学);University of Novi Sad(诺维萨德大学)

Sandro Coriasco, Giovanni Girardi, Stevan Pilipović

AI总结:

该研究针对带合适初值的时间分数阶偏微分方程柯西问题,推导了解的表示公式,可通过初值波前集控制齐次问题解的奇点,为次扩散型方程解的正则性与衰减性分析提供了方法。

摘要:

我们研究带 tempered 初值的时间分数阶偏微分方程柯西问题解的正则性与衰减性质,该初值属于合适的(加权)Sobolev空间,空间变量对应的微分算子具有多项式有界系数。我们得到了解的表示公式,模去关于空间变量光滑且快速衰减的时间正则函数。利用该表示公式,可根据初值的(整体)波前集控制齐次柯西问题解的(衰减与光滑性)奇点。

英文摘要:

We study regularity and decay properties for the solutions of the Cauchy problem for time-fractional partial differential equations, with tempered initial data, belonging to suitable (weighted) Sobolev spaces, associated with a differential operator on space variables with polynomially bounded coefficients. We obtain a representation formula for the solution, modulo time-regular functions, smooth and rapidly decreasing with respect to the space variables. By means of the representation formula, the (decay and smoothness) singularities of the solution of the homogeneous Cauchy problem can be controlled, in terms of (global) wavefront sets of the initial data.

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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