English

On the geometry of sharply 2-transitive groups

Group Theory 2020-02-14 v1 Logic

Abstract

We show that the geometry associated to certain non-split sharply 2-transitive groups does not contain a proper projective plane. For a sharply 2-transitive group of finite Morley rank we improve known rank inequalities for this geometry and conclude that a sharply 2-transitive group of Morley rank 6 must be of the form KKK\rtimes K^* for some algebraically closed field KK.

Keywords

Cite

@article{arxiv.2002.05187,
  title  = {On the geometry of sharply 2-transitive groups},
  author = {Tim Clausen and Katrin Tent},
  journal= {arXiv preprint arXiv:2002.05187},
  year   = {2020}
}