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arXiv 2001.09444math.AP
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一般时间分数阶扩散方程时间倒向问题的适定性

Well-posedness for the backward problems in time for general time-fractional diffusion equation

Giuseppe Floridia, Zhiyuan Li, Masahiro Yamamoto

摘要:

本文考虑一类具有Caputo时间导数的偏微分方程:$\partial_t^αu + Au = F$,其中$0< α< 1$和$u$满足零Dirichlet边界条件.对于二阶非对称椭圆算子$-A$和给定的$F$,我们证明了时间向后问题的适定性,并且我们的结果推广了现有的假设$A$是对称的结果.关键是椭圆算子$A$的广义本征函数的扰动引数和完备性。

英文摘要:

In this article, we consider a partial differential equation with Caputo time-derivative: $\partial_t^αu + Au = F$ where $0< α< 1$ and $u$ satisfies the zero Dirichlet boundary condition. For a non-symmetric elliptic operator $-A$ of the second order and given $F$, we prove the well-posedness for the backward problem in time and our result generalizes the existing results assuming that $A$ is symmetric. The key is the perturbation argument and the completeness of the generalized eigenfunctions of the elliptic operator $A$.

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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