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arXiv 1204.4501math.NAcs.NA
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离散傅里叶分析与 $G_2$ 群的切比雪夫多项式

Discrete Fourier Analysis and Chebyshev Polynomials with $G_2$ Group

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

Huiyuan Li, Jiachang Sun, Yuan Xu

AI总结:

本文通过考虑 $G_2$ 群不变函数,从正六边形上的离散傅里叶分析推导出 $30^\circ$-$60^\circ$-$90^\circ$ 三角形上的离散傅里叶分析,定义了四族广义切比雪夫多项式,并研究了它们的性质,包括与雅可比多项式类似的 Sturm-Liouville 特征值问题以及高斯型求积规则。

摘要:

通过考虑 $G_2$ 群不变函数,从正六边形上的相应结果推导出 $30^\circ$-$60^\circ$-$90^\circ$ 三角形上的离散傅里叶分析,这导致了四族广义切比雪夫多项式的定义。对这些多项式的研究引出了一个包含两个参数的 Sturm-Liouville 特征值问题,其解是雅可比多项式的类似物。在 $m$ 次的概念下,通过引入单项式之间的新序,这些多项式被证明具有普通正交多项式的性质。特别地,它们的公共零点生成了高斯型求积规则。

英文摘要:

The discrete Fourier analysis on the $30^{\degree}$-$60^{\degree}$-$90^{\degree}$ triangle is deduced from the corresponding results on the regular hexagon by considering functions invariant under the group $G_2$, which leads to the definition of four families generalized Chebyshev polynomials. The study of these polynomials leads to a Sturm-Liouville eigenvalue problem that contains two parameters, whose solutions are analogues of the Jacobi polynomials. Under a concept of $m$-degree and by introducing a new ordering among monomials, these polynomials are shown to share properties of the ordinary orthogonal polynomials. In particular, their common zeros generate cubature rules of Gauss type.

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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