Communications of the
Korean Mathematical Society
CKMS

ISSN(Print) 1225-1763 ISSN(Online) 2234-3024

Article

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Commun. Korean Math. Soc. 1999; 14(1): 121-134

Printed March 1, 1999

Copyright © The Korean Mathematical Society.

Estimates of Christoffel Functions for Generalized Polynomials with Exponential Weights

Haewon Joung

Inha University

Abstract

Generalized nonnegative polynomials are defined as the products of nonnegative polynomials raised to positive real powers. The generalized degree can be defined in a natural way. We extend some results on Infinite-Finite range inequalities, Christoffel functions, and Nikolski\u\i\ type inequalities corresponding to weights $W_\alpha(x)= \exp(-|x|^\alpha)$, $\alpha >0$, to those for generalized nonnegative polynomials.

Keywords: generalized polynomials, Infinite-Finite range inequalities, Christoffel functions, Nikolskiui type inequalities, exponential weights

MSC numbers: 41A17