arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0808.0180math.NAcs.NA
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立方体区域上的求积公式与插值

Cubature formula and interpolation on the cubic domain

Institute of Software Chinese Academy of Sciences(中国科学院软件研究所);Department of Mathematics University of Oregon(俄勒冈大学数学系)

Huiyuan Li, Jiachang Sun, Yuan Xu

AI总结:

利用离散傅里叶分析和格点铺砌,推导立方体区域上的求积公式,包括乘积Chebyshev权函数的高斯型求积公式和关联插值多项式的紧致公式。

摘要:

利用离散傅里叶分析和格点铺砌(如\cite{LSX}中所述),推导了立方体区域上的若干求积公式。主要结果包括对乘积Chebyshev权函数在$[-1,1]^2$上的高斯型求积公式及其关联插值多项式的新推导,以及在$[-1,1]^3$上的新结果。特别地,基于$[-1,1]^3$上具有$n^3/4 +\CO(n^2)$个节点的求积公式,推导了基本插值多项式的紧致公式。

英文摘要:

Several cubature formulas on the cubic domains are derived using the discrete Fourier analysis associated with lattice tiling, as developed in \cite{LSX}. The main results consist of a new derivation of the Gaussian type cubature for the product Chebyshev weight functions and associated interpolation polynomials on $[-1,1]^2$, as well as new results on $[-1,1]^3$. In particular, compact formulas for the fundamental interpolation polynomials are derived, based on $n^3/4 +\CO(n^2)$ nodes of a cubature formula on $[-1,1]^3$.

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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