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arXiv 2303.01798math.AP
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分数阶扩散方程的均匀化与反问题

Homogenization and Inverse Problems for Fractional Diffusion Equations

Atsushi Kawamoto, Manabu Machida, Masahiro Yamamoto

摘要:

研究了周期结构中时间分数阶扩散方程的均匀化问题,得到了均匀化的时间分数阶扩散方程。然后讨论了用最小数据确定常数扩散系数的问题。结合上述结果,我们研究了由周期结构中的数据确定均匀化方程扩散系数的反问题,反之亦然,即研究了由均匀化结构中的数据确定周期方程扩散系数的反问题。

英文摘要:

We consider the homogenization for time-fractional diffusion equations in a periodic structure and we derive the homogenized time-fractional diffusion equation. Then we discuss the determination of the constant diffusion coefficient by minimum data. Combining the results obtained above, we investigate the inverse problems of determining the diffusion coefficient for the homogenized equations from the data in the periodic structure and vice versa, that is, we investigate the inverse problem of determining the diffusion coefficient for the periodic equations from the data in the homogenized structure.

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