English

Asymptotics for polynomials orthogonal in an indefinite metric

Classical Analysis and ODEs 2017-06-29 v1 Complex Variables Spectral Theory

Abstract

We continue studying polynomials generated by the Szeg\H{o} recursion when a finite number of Verblunsky coefficients lie outside the closed unit disk. We prove some asymptotic results for the corresponding orthogonal polynomials and then translate them to the real line to obtain the Szeg\H{o} asymptotics for the resulting polynomials. The latter polynomials give rise to a non-symmetric tridiagonal matrix but it is a finite-rank perturbation of a symmetric Jacobi matrix.

Keywords

Cite

@article{arxiv.1706.09103,
  title  = {Asymptotics for polynomials orthogonal in an indefinite metric},
  author = {Maxim Derevyagin and Brian Simanek},
  journal= {arXiv preprint arXiv:1706.09103},
  year   = {2017}
}

Comments

16 pages

R2 v1 2026-06-22T20:31:43.703Z