论文标题

基督佛尔的功能,用于多个正交多项式

Christoffel functions for multiple orthogonal polynomials

论文作者

Świderski, Grzegorz, Van Assche, Walter

论文摘要

我们研究了基督佛教 - darboux内核在对应于多个正交多项式的主要对角线上的弱渐近行为。我们表明,在某些假设下,$ \ tfrac {1} {n} k_n(x,x)\,dμ$的弱极限与II型多重正交多项式的归一化零计数的极限相同。我们还将Nevai的运营商扩展到我们的背景下。

We study weak asymptotic behaviour of the Christoffel--Darboux kernel on the main diagonal corresponding to multiple orthogonal polynomials. We show that under some hypotheses the weak limit of $\tfrac{1}{n} K_n(x,x)\, dμ$ is the same as the limit of the normalized zero counting measure of type II multiple orthogonal polynomials. We also study an extension of Nevai's operators to our context.

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