Fine Structure of the Zeros of Orthogonal Polynomials, I. A Tale of Two Pictures

Abstract

Mhaskar-Saff found a kind of universal behavior for the bulk structure of the zeros of orthogonal polynomials for large $n$. Motivated by two plots, we look at the finer structure for the case of random Verblunsky coefficients and for what we call the BLS condition: $α_n = Cb^n + O((bΔ)^n)$. In the former case, we describe results of Stoiciu. In the latter case, we prove asymptotically equal spacing for the bulk of zeros.

Keywords: orthogonal polynomials, Jacobi matrices, CMV matrices