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arXiv 2403.08575math.AP
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退化或奇异抛物方程的高阶Schauder估计

Higher order Schauder estimates for degenerate or singular parabolic equations

Alessandro Audrito, Gabriele Fioravanti, Stefano Vita

AI总结:

本文为特征超平面上退化/奇异权重的抛物方程建立高阶Schauder估计,通过爆破与刘维尔定理及迭代过程,并应用于正则超曲面情形及高阶边界Harnack原理的新证明。

摘要:

在本文中,我们完成了[AFV24]中启动的分析,为在特征超平面上退化/奇异的带权抛物方程类建立了高阶$C^{k+2,\alpha}$ Schauder估计($k \in \mathbb{N}$)。$C^{2,\alpha}$估计通过爆破论证和刘维尔定理获得,而高阶估计则通过精细迭代过程获得。作为副产品,我们给出了两个应用。首先,当权的退化/奇异性发生在圆柱型正则超曲面上时,我们证明了类似的Schauder估计。其次,我们提供了[BG16,Kuk22]中建立的高阶边界Harnack原理的另一种证明。

英文摘要:

In this paper, we complete the analysis initiated in [AFV24] establishing some higher order $C^{k+2,α}$ Schauder estimates ($k \in \mathbb{N}$) for a a class of parabolic equations with weights that are degenerate/singular on a characteristic hyperplane. The $C^{2,α}$-estimates are obtained through a blow-up argument and a Liouville theorem, while the higher order estimates are obtained by a fine iteration procedure. As a byproduct, we present two applications. First, we prove similar Schauder estimates when the degeneracy/singularity of the weight occurs on a regular hypersurface of cylindrical type. Second, we provide an alternative proof of the higher order boundary Harnack principles established in [BG16,Kuk22].

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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