Strong asymptotics for Christoffel functions of planar measures
Complex Variables
2007-09-14 v1 Classical Analysis and ODEs
Abstract
We prove a version of strong asymptotics of Christoffel functions with varying weights for a general class of sets E and measures in the complex plane. This class includes all regular measures in the sense of Stahl-Totik on regular compact sets E in the plane and even allows varying weights. Our main theorems cover some known results for subsets E of the real line R; in particular, we recover information in the case of E=R with Lebesgue measure dx and weight w(x) = exp(-Q(x)) where Q(x) is a nonnegative, even degree polynomial having positive leading coefficient.
Cite
@article{arxiv.0709.2073,
title = {Strong asymptotics for Christoffel functions of planar measures},
author = {Tom Bloom and Norm Levenberg},
journal= {arXiv preprint arXiv:0709.2073},
year = {2007}
}