English

Pairing of Zeros and Critical Points for Random Meromorphic Functions on Riemann Surfaces

Complex Variables 2015-12-29 v1 Mathematical Physics math.MP Probability

Abstract

We prove that zeros and critical points of a random polynomial pNp_N of degree NN in one complex variable appear in pairs. More precisely, if pNp_N is conditioned to have pN(ξ)=0p_N(\xi)=0 for a fixed ξ\C\{0},\xi \in \C\backslash\set{0}, we prove that there is a unique critical point z in the annulus N^{-1-\ep}<\abs{z-\xi}< N^{-1+\ep}} and no critical points closer to ξ\xi with probability at least 1O(N3/2+3\ep).1-O(N^{-3/2+3\ep}). We also prove an analogous statement in the more general setting of random meromorphic functions on a closed Riemann surface.

Keywords

Cite

@article{arxiv.1305.6105,
  title  = {Pairing of Zeros and Critical Points for Random Meromorphic Functions on Riemann Surfaces},
  author = {Boris Hanin},
  journal= {arXiv preprint arXiv:1305.6105},
  year   = {2015}
}

Comments

20 pages, 2 figures