English

Local Moufang sets and PSL_2 over a local ring

Group Theory 2017-03-16 v4

Abstract

We introduce local Moufang sets as a generalization of Moufang sets. We present a method to construct local Moufang sets from only one root group and one permutation. We use this to describe PSL2\mathsf{PSL}_2 over a local ring as a local Moufang set, and give necessary and sufficient conditions for a local Moufang set to be of this form.

Keywords

Cite

@article{arxiv.1510.03688,
  title  = {Local Moufang sets and PSL_2 over a local ring},
  author = {Tom De Medts and Erik Rijcken},
  journal= {arXiv preprint arXiv:1510.03688},
  year   = {2017}
}

Comments

23 pages, fixed a problem in Lemma 5.8, where we need an extra assumption. Other results remain unchanged

R2 v1 2026-06-22T11:19:07.368Z