%0 Journal Article
%T Stability of Asymptotics of Christoffel-Darboux Kernels
%A Jonathan Breuer
%A Yoram Last
%A Barry Simon
%J Mathematics
%D 2013
%I arXiv
%R 10.1007/s00220-014-1913-4
%X We study the stability of convergence of the Christoffel-Darboux kernel, associated with a compactly supported measure, to the sine kernel, under perturbations of the Jacobi coefficients of the measure. We prove stability under variations of the boundary conditions and stability in a weak sense under $\ell^1$ and random $\ell^2$ diagonal perturbations. We also show that convergence to the sine kernel at $x$ implies that $\mu(\{x\})=0$.
%U http://arxiv.org/abs/1302.7237v1