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arXiv 2007.03853math.AP
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具有局部周期系数的抛物型方程组均匀化的收敛速度

Convergence rates in homogenization of parabolic systems with locally periodic coefficients

Yao Xu

摘要:

本文研究了具有局部周期(空间和时间)系数的二阶抛物型方程组的定量均匀化。在$C^{1, 1}$柱面上建立了系数最小光滑条件下的$L^2(0, T; L^{\frac{2d}{d-1}}(Ω))$中的$O(\varepsilon)$尺度不变误差估计。这个过程依赖于平滑算子的关键估计。我们还开发了一个新的建设的通量校正器的抛物线的方式和时间边界层的尖锐的估计。

英文摘要:

In this paper we study the quantitative homogenization of second-order parabolic systems with locally periodic (in both space and time) coefficients. The $O(\varepsilon)$ scale-invariant error estimate in $L^2(0, T; L^{\frac{2d}{d-1}}(Ω))$ is established in $C^{1, 1}$ cylinders under minimum smoothness conditions on the coefficients. This process relies on critical estimates of smoothing operators. We also develop a new construction of flux correctors in the parabolic manner and a sharp estimate for temporal boundary layers.

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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