A. A. Schaeffer Fry

activity

20122024

most citedCross-Characteristic Representations of

S p_{6} (2^{a})

and Their Restrictions to Maximal Subgroups

1 citations · 2 across the 6 of their papers we have counts for

collaborators

6 papers

math.RT2024

A Brauer--Galois height zero conjecture

Gunter Malle, Alexander Moretó, Noelia Rizo +1

Recently, Malle and Navarro obtained a Galois strengthening of Brauer's height zero conjecture for principal $p$ -blocks when $p = 2$ , considering a particular Galois automorphism of…

math.GR2023

Brauer's problem 21 for principal blocks

Alexander Moretó, Noelia Rizo, A. A. Schaeffer Fry

Problem 21 of Brauer's list of problems from 1963 asks whether for any positive integer k there are finitely many isomorphism classes of groups that occur as the defect group of a…

math.RT2023★ 1 cited

Principal blocks with six ordinary irreducible characters

Nguyen N. Hung, A. A. Schaeffer Fry, Carolina Vallejo

We classify Sylow $p$ -subgroups of finite groups whose principal $p$ -blocks have precisely six ordinary irreducible characters.

math.GR2022

Principal blocks for different primes, I

Gabriel Navarro, Noelia Rizo, A. A. Schaeffer Fry

We propose new conjectures about the relationship between the principal blocks of finite groups for different primes and establish evidence for these conjectures.

math.GR2015

Finite groups with an irreducible character of large degree

Nguyen Ngoc Hung, Mark L. Lewis, Amanda A. Schaeffer Fry

Let $G$ be a finite group and $d$ the degree of a complex irreducible character of $G$ , then write $∣ G ∣ = d (d + e)$ where $e$ is a nonnegative integer. We prove that $∣ G ∣ \leq e^{4} - e^{3}$ …

math.GR2012★ 1 cited

Cross-Characteristic Representations of $S p_{6} (2^{a})$ and Their Restrictions to Maximal Subgroups

Amanda A. Schaeffer Fry

We classify all pairs $(V, H)$ , where $H$ is a proper subgroup of $G = S p_{6} (q)$ , $q$ even, and $V$ is an $ℓ$ -modular representation of $G$ for $ℓ \neq = 2$ which is absolutely irre…