English

Value distribution of derivatives in polynomial dynamics

Dynamical Systems 2019-04-16 v1 Complex Variables Number Theory

Abstract

For every mNm\in\mathbb{N}, we establish the equidistribution of the sequence of the averaged pull-backs of a Dirac measure at any given value in C{0}\mathbb{C}\setminus\{0\} under the mm-th order derivatives of the iterates of a polynomials fC[z]f\in \mathbb{C}[z] of degree d>1d>1 towards the harmonic measure of the filled-in Julia set of ff with pole at \infty. We also establish non-archimedean and arithmetic counterparts using the potential theory on the Berkovich projective line and the adelic equidistribution theory over a number field kk for a sequence of effective divisors on P1(k)\mathbb{P}^1(\overline{k}) having small diagonals and small heights. We show a similar result on the equidistribution of the analytic sets where the derivative of each iterate of a H\'enon-type polynomial automorphism of C2\mathbb{C}^2 has a given eigenvalue.

Keywords

Cite

@article{arxiv.1904.06858,
  title  = {Value distribution of derivatives in polynomial dynamics},
  author = {Yûsuke Okuyama and Gabriel Vigny},
  journal= {arXiv preprint arXiv:1904.06858},
  year   = {2019}
}
R2 v1 2026-06-23T08:39:23.811Z