TITLE:
A Study of Weighted Polynomial Approximations with Several Variables (II)
AUTHORS:
Ryozi Sakai
KEYWORDS:
Weighted Polynomial Approximations, the Lagrange Interpolation, the Best of Approximation, Inequalities
JOURNAL NAME:
Applied Mathematics,
Vol.8 No.9,
September
6,
2017
ABSTRACT: 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.