English

Orthogonal polynomials in weighted Bergman spaces

Classical Analysis and ODEs 2023-10-12 v2

Abstract

Let ww be a weight on the unit disk D\mathbb{D} having the form w(z)=v(z)2k=1szak1zakmk,mk>2, ak<1,w(z)=|v(z)|^2\prod_{k=1}^s\left|\frac{z-a_k}{1-z\overline{a}_k}\right|^{m_k}\,,\quad m_k>-2,\ |a_k|<1, where vv is analytic and free of zeros in D\overline{\mathbb{D}}, and let (pn)n=0(p_n)_{n=0}^\infty be the sequence of polynomials (pnp_n of degree nn) orthonormal over D\mathbb{D} with respect to ww. We give an integral representation for pnp_n from which it is in principle possible to derive its asymptotic behavior as nn\to\infty at every point zz of the complex plane, the asymptotic analysis of the integral being primarily dependent on the nature of the first singularities encountered by the function v(z)1k=1s(1zak)1v(z)^{-1}\prod_{k=1}^s(1-z\overline{a}_k)^{-1}.

Keywords

Cite

@article{arxiv.2301.04749,
  title  = {Orthogonal polynomials in weighted Bergman spaces},
  author = {Erwin Miña-Díaz},
  journal= {arXiv preprint arXiv:2301.04749},
  year   = {2023}
}
R2 v1 2026-06-28T08:09:47.433Z