A sharp bound on the Lebesgue constant for Leja points in the unit disk

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• 作者：Myriam Ounaï ; es ^{myriam.ounaies@math.unistra.fr}
• 关键词：Lagrange interpolation ; Polynomial approximation ; Lebesgue constant ; Leja sequences
• 刊名：Journal of Approximation Theory
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：213
• 期：Complete
• 页码：70-77
• 全文大小：204 K
• 卷排序：213

文摘

We give a sharp bound for the Lebesgue constant associated with Leja sequences in the complex unit disk, confirming a conjecture made by Calvi and Phung in 2011.