English

Sharply transitive sets in $\mathrm{PGL}_2(K)$

Group Theory 2021-07-20 v2 Combinatorics

Abstract

Here is a simplified proof that every sharply transitive subset of PGL2(K)\mathrm{PGL}_2(K) is a coset of a subgroup.

Cite

@article{arxiv.2105.02760,
  title  = {Sharply transitive sets in $\mathrm{PGL}_2(K)$},
  author = {Sean Eberhard},
  journal= {arXiv preprint arXiv:2105.02760},
  year   = {2021}
}

Comments

3 pages. Referee's comments incorporated

R2 v1 2026-06-24T01:50:44.821Z