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Stable Lifting of Polynomial Traces on Triangles
SIAM Journal on Numerical Analysis ( IF 2.9 ) Pub Date : 2024-03-04 , DOI: 10.1137/23m1564948
Charles Parker 1 , Endre Süli 1
Affiliation  

SIAM Journal on Numerical Analysis, Volume 62, Issue 2, Page 692-717, April 2024.
Abstract. We construct a right inverse of the trace operator [math] on the reference triangle [math] that maps suitable piecewise polynomial data on [math] into polynomials of the same degree and is bounded in all [math] norms with [math] and [math]. The analysis relies on new stability estimates for three classes of single edge operators. We then generalize the construction for [math]th-order normal derivatives, [math].


中文翻译:

三角形上多项式迹的稳定提升

《SIAM 数值分析杂志》,第 62 卷,第 2 期,第 692-717 页,2024 年 4 月。
摘要。我们在参考三角形 [math] 上构建迹算子 [math] 的右逆,将 [math] 上的合适分段多项式数据映射为相同次数的多项式,并在所有 [math] 范数中以 [math] 和 [数学]。该分析依赖于三类单边算子的新稳定性估计。然后我们概括了[数学]阶正规导数[数学]的构造。
更新日期:2024-03-05
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