English

Okutsu sequences in Henselian fields

Number Theory 2024-07-16 v1 Commutative Algebra

Abstract

For (K,v)(K,v) a Henselian valued field, let θK\theta\in\overline{K} with minimal polynomial FF over KK. Okutsu sequences of θ\theta have been defined only when the extension K(θ)/KK(\theta)/K is defectless. In this paper, we extend this concept to arbitrary θK\theta\in\overline{K} and we show that these objects are essentially equivalent to Okutsu frames of FF and to Mac Lane-Vaqui\'e chains of the natural valuation on K[x]K[x] induced by θ\theta.

Keywords

Cite

@article{arxiv.2407.10511,
  title  = {Okutsu sequences in Henselian fields},
  author = {Enric Nart},
  journal= {arXiv preprint arXiv:2407.10511},
  year   = {2024}
}
R2 v1 2026-06-28T17:40:50.156Z