English

On the computation of overorders

Number Theory 2019-09-25 v1

Abstract

The computation of a maximal order of an order in a semisimple algebra over a global field is a classical well-studied problem in algorithmic number theory. In this paper we consider the related problems of computing all minimal overorders as well as all overorders of a given order. We use techniques from algorithmic representation theory and the theory of minimal integral ring extensions to obtain efficient and practical algorithms, whose implementation is publicly available.

Keywords

Cite

@article{arxiv.1909.10860,
  title  = {On the computation of overorders},
  author = {Tommy Hofmann and Carlo Sircana},
  journal= {arXiv preprint arXiv:1909.10860},
  year   = {2019}
}
R2 v1 2026-06-23T11:24:12.122Z