English

Density of $p$-adic polynomials generating extensions with fixed splitting type

Number Theory 2022-11-24 v2

Abstract

We prove that the density of polynomials P(x)=i=0nanxnP(x)=\sum_{i=0}^n a_n x^n over a local field KK generating an \'etale extension with specified splitting type is a rational function in terms of the size of the residue field of KK in the case where the splitting type is tame. Moreover, we give a computable recursive formula for these densities and compute the asymptotics of this density as the size of the residue field tends to infinity.

Keywords

Cite

@article{arxiv.2211.10425,
  title  = {Density of $p$-adic polynomials generating extensions with fixed splitting type},
  author = {John Yin},
  journal= {arXiv preprint arXiv:2211.10425},
  year   = {2022}
}
R2 v1 2026-06-28T06:14:24.160Z