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arXiv 1910.04585math.NAcs.NA
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$P_1$ --高维多面体有限元

$P_1$--nonconforming polyhedral finite elements in high dimensions

Dongwoo Sheen

摘要:

本文研究了高维椭圆问题的最低次离散有限元法。本文介绍了一种适用于任意高维有限元的$P_1$ --我们的有限元是简单和廉价的,因为它是基于三角域成平行,这是组合等价于$d$ -维立方体,而不是三角域成单形。我们的元是非参数的,在每个多面体上它只包含线性多项式,但它足以给出二阶椭圆问题的最优阶收敛。

英文摘要:

We consider the lowest--degree nonconforming finite element methods for the approximation of elliptic problems in high dimensions. The $P_1$--nonconforming polyhedral finite element is introduced for any high dimension. Our finite element is simple and cheap as it is based on the triangulation of domains into parallelotes, which are combinatorially equivalent to $d$--dimensional cube, rather than the triangulation of domains into simplices. Our nonconforming element is nonparametric, and on each polytope it contains only linear polynomials, but it is sufficient to give optimal order convergence for second--order elliptic problems.

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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