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arXiv 0910.3891math.NAcs.NA
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二维中一个新的H(div)相容p-插值算子

A new H(div)-conforming p-interpolation operator in two dimensions

Brunel University(布鲁内尔大学);Pontificia Universidad Católica de Chile(智利天主教 Pontificia 大学)

Alexei Bespalov, Norbert Heuer

AI总结:

本文构造了一个新的基于投影的H(div)相容p-插值算子,仅需参考元上的H^r(K) ∩ H^{-1/2}(div,K)正则性,证明了其多项式次数稳定性与交换图性质,并给出了H^{-1/2}(div,K)范数下的插值误差估计。

摘要:

本文构造了一个新的基于投影的H(div)相容p-插值算子,该算子仅需参考元K(三角形或正方形)上的$H^r(K) \cap \tilde H^{-1/2}(\text{div},K)$正则性(r > 0)。我们证明了该算子关于多项式次数是稳定的,并满足交换图性质。我们还建立了空间$\tilde H^{-1/2}(\text{div},K)$范数下的插值误差估计,该空间与三维电磁学时谐问题的边界积分公式的能量空间密切相关。

英文摘要:

In this paper we construct a new H(div)-conforming projection-based p-interpolation operator that assumes only $H^r(K) \cap \tilde H^{-1/2}(div,K)$-regularity (r > 0) on the reference element K (either triangle or square). We show that this operator is stable with respect to polynomial degrees and satisfies the commuting diagram property. We also establish an estimate for the interpolation error in the norm of the space $\tilde H^{-1/2}(div,K)$, which is closely related to the energy spaces for boundary integral formulations of time-harmonic problems of electromagnetics in three dimensions.

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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