The blocks with four irreducible characters
Group Theory
2022-01-28 v2
Abstract
Suppose that is a Brauer -block with defect group . If exactly contains 4 irreducible characters, then we show that has order 4 or 5, assuming the Alperin--McKay conjecture.
Cite
@article{arxiv.2109.10654,
title = {The blocks with four irreducible characters},
author = {J. Miquel Martínez and Noelia Rizo and Lucía Sanus},
journal= {arXiv preprint arXiv:2109.10654},
year = {2022}
}
Comments
There is a gap in the final step