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arXiv 2203.16183math.AP
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关于变分积分极小解的整体正则性:二维分裂型问题和一般各向异性情形的推广

On the global regularity for minimizers of variational integrals: splitting-type problems in 2D and extensions to the general anisotropic setting

Michael Bildhauer, Martin Fuchs

摘要:

主要讨论有界Lipschitz域$Ω\subset \mathbb{R}^2$上分裂型变分积分的超二次极小化问题,并通过引入一个合适的权函数来度量解到边界数据的距离,证明了到边界的梯度的更高的可积性.作为推论,局部Hölder系数相对于一些改进的Hölder连续性量化的功能${\rm dist}(\cdot,\partial Ω)$。将所得结果推广到自然增长和椭圆性条件下无分裂结构的各向异性问题。在这两种情况下,我们认为与变种卡乔波里的不等式涉及小的权重

英文摘要:

We mainly discuss superquadratic minimization problems for splitting-type variational integrals on a bounded Lipschitz domain $Ω\subset \mathbb{R}^2$ and prove higher integrability of the gradient up to the boundary by incorporating an appropriate weight-function measuring the distance of the solution to the boundary data. As a corollary, the local Hölder coefficient with respect to some improved Hölder continuity is quantified in terms of the function ${\rm dist}(\cdot,\partial Ω)$. The results are extended to anisotropic problems without splitting structure under natural growth and ellipticity conditions. In both cases we argue with variants of Caccioppoli's inequality involving small weights

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