English

Equidistribution of zeros of some polynomials related to cyclic functions

Complex Variables 2021-10-14 v1

Abstract

In the study of the cyclicity of a function ff in reproducing kernel Hilbert spaces an important role is played by sequences of polynomials {pn}nN\{p_n\}_{n\in \mathbb{N}} called \emph{optimal polynomial approximants} (o.p.a.). For many such spaces and when the functions ff generating those o.p.a. are polynomials without zeros inside the disk but with some zeros on its boundary, we find that the weakly asympotic distribution of the zeros of 1pnf1-p_nf is the uniform measure on the unit circle.

Keywords

Cite

@article{arxiv.2110.06788,
  title  = {Equidistribution of zeros of some polynomials related to cyclic functions},
  author = {Antonio Acuaviva and Daniel Seco},
  journal= {arXiv preprint arXiv:2110.06788},
  year   = {2021}
}