English

Odd Characterizations of Almost Simple Groups (PhD Thesis 2009)

Group Theory 2012-09-26 v1

Abstract

In this PhD thesis we discuss methods of recognizing finite groups by the structure of normalizers of certain 3-subgroups. We explain a method for characterizing groups using character theoretic and block theoretic methods and we use these methods to characterize \alt(9)\alt(9). Furthermore, we describe a particular hypothesis related to the 3-local structure of finite groups of local characteristic 3 and characterize two almost simple proper extensions of Ω8+(2)\Omega^+_8(2) as examples of the local approach to group recognition. We also give a 3-local characterization of the sporadic simple group \HN\HN using local methods whilst applying a character theoretic result.

Keywords

Cite

@article{arxiv.1209.5542,
  title  = {Odd Characterizations of Almost Simple Groups (PhD Thesis 2009)},
  author = {Sarah Astill},
  journal= {arXiv preprint arXiv:1209.5542},
  year   = {2012}
}
R2 v1 2026-06-21T22:10:37.754Z