Eden Ketchum | Searcharxiv

arXiv2026

Galois action on the principal block and generation of Sylow 3-subgroups

In this paper, we prove one direction of a conjecture of Navarro-Rizo-Schaeffer Fry-Vallejo positing an algorithm to determine from the character table whether a finite group has $2$-generated Sylow $3$-subgroups. This gives further evidence of the blockwise version of the Galois-McKay conjecture (also known as the Alperin-McKay-Navarro conjecture). A key step involves proving the Isaacs-Navarro Galois conjecture for principal blocks for finite groups with a certain structure.

math.GR↗

arXiv2025

Characters and the Generation of Sylow 3-Subgroups For Almost Simple Groups

Given an almost simple group $A$, we algorithmically show that the character table of $A$ determines whether or not the Sylow 3-subgroups of $A$ are 2-generated. We show this property is equivalent to a condition involving the Galois action on characters in the principal $3$-block. This would be a consequence of the Alperin-McKay-Navarro conjecture.

math.GR↗