arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1807.09062math.AP
收藏

一类具有周期振动系数的椭圆型方程周期格林函数的分解与逐点估计

Decomposition and pointwise estimates of periodic Green functions of some elliptic equations with periodic oscillatory coefficients

Marc Josien

摘要:

本文研究多尺度椭圆算子$Lu=-{\rm div}\left( A(n\cdot) \cdot \nabla u \right)$的$\mathbb{Z}^d$ -周期格林函数$G_n(x,y)$,其中$A(x)$是$\mathbb{Z}^d$ -周期、强制、Hölder连续矩阵,$n$是大整数.我们证明了在这里逐点估计$G_n(x,y)$,$\nabla_x G_n(x,y)$,$\nabla_y G_n(x,y)$和$\nabla_x \nabla_y G_n(x,y)$尺寸$d \geq 2$。此外,我们推导出这个格林函数的一个明确的分解,这是独立的利益。这些结果也适用于系统。

英文摘要:

This article is about the $\mathbb{Z}^d$-periodic Green function $G_n(x,y)$ of the multiscale elliptic operator $Lu=-{\rm div}\left( A(n\cdot) \cdot \nabla u \right)$, where $A(x)$ is a $\mathbb{Z}^d$-periodic, coercive, and Hölder continuous matrix, and $n$ is a large integer. We prove here pointwise estimates on $G_n(x,y)$, $\nabla_x G_n(x,y)$, $\nabla_y G_n(x,y)$ and $\nabla_x \nabla_y G_n(x,y)$ in dimensions $d \geq 2$. Moreover, we derive an explicit decomposition of this Green function, which is of independent interest. These results also apply for systems.

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。

↑