English

Pair correlation of roots of rational functions with rational generating functions and quadratic denominators

Complex Variables 2016-01-19 v1

Abstract

For any rational functions with complex coefficients A(z),B(z)A(z), B(z) and C(z)C(z), where A(z)A(z), C(z)C(z) are not identically zero, we consider the sequence of rational functions Hm(z)H_{m}(z) with generating function Hm(z)tm=1/(A(z)t2+B(z)t+C(z))\sum H_{m}(z)t^{m}=1/(A(z)t^{2}+B(z)t+C(z)). We provide an explicit formula for the limiting pair correlation function of the roots of m=0nHm(z)\prod_{m=0}^{n}H_{m}(z), as nn\rightarrow\infty, counting multiplicities, on certain closed subarcs JJ of a curve C\mathcal{C} where the roots lie. We give an example where the limiting pair correlation function does not exist if JJ contains the endpoints of C\mathcal{C}.

Keywords

Cite

@article{arxiv.1601.04381,
  title  = {Pair correlation of roots of rational functions with rational generating functions and quadratic denominators},
  author = {Khang Tran and Alexandru Zaharescu},
  journal= {arXiv preprint arXiv:1601.04381},
  year   = {2016}
}