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arXiv 2206.06321math.AP
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复合材料方程解的高正则性

Higher regularity for solutions to equations arising from composite materials

Hongjie Dong, Longjuan Xu

摘要:

我们考虑具有分段$C^{(s+δ)/2,s+δ}$系数和数据的散度型抛物方程组,该方程组在$C^{s+1+μ}$中由有限个具有界面边界的圆柱子域组成的有界区域中,其中$s\in\mathbb N$,$δ\in (1/2,1)$,和$μ\in (0,1]$ .我们建立了这类抛物型方程组弱解的分段$C^{(s+1+μ')/2,s+1+μ'}$估计,其中$μ'=\min\big\{1/2,μ\big\}$,并且该估计与界面之间的距离无关。在椭圆设置,我们的结果回答了一个开放的问题(c)在李和Vogelius(拱。153(2000),91- 151)。

英文摘要:

We consider parabolic systems in divergence form with piecewise $C^{(s+δ)/2,s+δ}$ coefficients and data in a bounded domain consisting of a finite number of cylindrical subdomains with interfacial boundaries in $C^{s+1+μ}$, where $s\in\mathbb N$, $δ\in (1/2,1)$, and $μ\in (0,1]$. We establish piecewise $C^{(s+1+μ')/2,s+1+μ'}$ estimates for weak solutions to such parabolic systems, where $μ'=\min\big\{1/2,μ\big\}$, and the estimates are independent of the distance between the interfaces. In the elliptic setting, our results answer an open problem (c) in Li and Vogelius (Arch. Rational Mech. Anal. 153 (2000), 91--151).

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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