A Study of Weighted Polynomial Approximations with Several Variables (II)

• 作者: Ryozi Sakai
• 来源期刊: 应用数学(英文)
• 学科: 数学
• 关键词: WEIGHTED POLYNOMIAL APPROXIMATIONS the LAGRANGE INTERPOLATION the Best of Approximation INEQUALITIES
• 年，卷（期）: 2017,（9）
• 页码范围: 1239-1256
• 页数: 18页
• 分类号: O1

摘要

In this paper we investigate weighted polynomial approximations with several variables. Our study relates to the approximation for by weighted polynomial. Then we will give some results relating to the Lagrange interpolation, the best approximation, the Markov-Bernstein inequality and the Nikolskii- type inequality.