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arXiv 2102.09934math.AP
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Sobolev meets Besov:具有Dirichlet,Neumann和混合边值的泊松方程的正则性

Sobolev meets Besov: Regularity for the Poisson equation with Dirichlet, Neumann and mixed boundary values

Cornelia Schneider, Flóra Orsolya Szemenyei

摘要:

本文在Besov空间的特定尺度$\ B^α_{τ,τ}, \ \frac{1}τ=\fracα{d}+\frac{1}{p}\ $中研究了多面体锥$K\subset \mathbb{R}^3$中具有Dirichlet、Neumann和混合边值的泊松方程解的正则性。在这些空间中的解决方案的规律性决定了近似的顺序,可以实现自适应和非线性数值方案。我们的目标是一个彻底的讨论,均匀和非均匀的边界数据在所有的设置研究,并表明,解决方案是更平滑的分数Sobolev规模相比,在所有情况下,这证明了使用自适应计划在这个特定的Besov规模$H^s$。

英文摘要:

We study the regularity of solutions of the Poisson equation with Dirichlet, Neumann and mixed boundary values in polyhedral cones $K\subset \mathbb{R}^3$ in the specific scale $\ B^α_{τ,τ}, \ \frac{1}τ=\fracα{d}+\frac{1}{p}\ $ of Besov spaces. The regularity of the solution in these spaces determines the order of approximation that can be achieved by adaptive and nonlinear numerical schemes. We aim for a thorough discussion of homogeneous and inhomogeneous boundary data in all settings studied and show that the solutions are much smoother in this specific Besov scale compared to the fractional Sobolev scale $H^s$ in all cases, which justifies the use of adaptive schemes.

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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