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Fundamental conjectures in modular representation theory of finite groups, more precisely, Alperin's Weight Conjecture and Robinson's Ordinary Weight Conjecture, can be expressed in terms of fusion systems. We use fusion systems to connect…

Representation Theory · Mathematics 2023-11-23 Radha Kessar , Gunter Malle , Jason Semeraro

In this paper, we establish the inductive Alperin weight condition for the finite simple groups of Lie type $\mathsf A$, contributing to the program to prove the Alperin weight conjecture by checking the inductive condition for all finite…

Representation Theory · Mathematics 2021-04-27 Zhicheng Feng , Conghui Li , Jiping Zhang

This paper has two main parts. Firstly, we give a classification of the $\ell$-blocks of finite special linear and unitary groups $SL_n(\epsilon q)$ in the non-defining characteristic $\ell\ge 3$. Secondly, we describe how the…

Representation Theory · Mathematics 2019-01-18 Zhicheng Feng

Recently, there has been substantial progress on the Alperin weight conjecture. As a step to establish the Alperin weight conjecture for all finite groups, we prove the inductive blockwise Alperin weight condition for simple groups of…

Representation Theory · Mathematics 2019-08-12 Zhicheng Feng , Zhenye Li , Jiping Zhang

This paper is concerned with the representation theory of finite groups. According to Robinson, the truth of certain variants of Alperin's weight conjecture on the $p$-blocks of a finite group would imply some arithmetical conditions on the…

Representation Theory · Mathematics 2007-05-23 Meinolf Geck

In a recent paper, Gabriel Navarro and Pham Huu Tiep show that the so-called Alperin Weight Conjecture can be verified via the Classification of the Finite Simple Groups, provided any simple group fulfills a very precise list of conditions.…

Group Theory · Mathematics 2011-09-21 Lluis Puig

Radical subgroups play an important role in both finite group theory and representation theory. This is the first of a series of papers of ours in classifying radical $p$-subgroups of finite reductive groups and in verifying the inductive…

Representation Theory · Mathematics 2024-11-06 Zhicheng Feng , Jun Yu , Jiping Zhang

In this paper we prove the blockwise Alperin weight conjecture for finite special linear and unitary groups, for finite groups with abelian Sylow $3$-subgroups, and verify the inductive blockwise Alperin weight condition for certain cases…

Representation Theory · Mathematics 2022-07-05 Zhicheng Feng , Conghui Li , Jiping Zhang

In a recent paper, Gabriel Navarro and Pham Huu Tiep show that the so-called Alperin Weight Conjecture can be verified via the Classification of the Finite Simple Groups, provided any simple group fulfills a very precise list of conditions.…

Group Theory · Mathematics 2012-05-16 Lluis Puig

The so-called inductive McKay condition on finite simple groups, due to Isaacs-Malle-Navarro (2007), has been recently reformulated by Sp\"ath. We show that this reformulation applies to the reduction theorem for Alperin's weight…

Representation Theory · Mathematics 2014-02-26 Marc Cabanes

Recently, G. Navarro introduced a new conjecture that unifies the Alperin Weight Conjecture and the Glauberman correspondence into a single statement. In this paper, we reduce this problem to simple groups and prove it for several classes…

Representation Theory · Mathematics 2026-02-18 J. Miquel Martínez , N. Rizo , D. Rossi

We prove analogues for reductive algebraic groups of some results for finite groups due to Knoerr and Robinson which play a central role in their reformulation of Alperin's conjecture for finite groups.

Group Theory · Mathematics 2011-11-09 Gerhard Roehrle , Raphael Rouquier

The Alperin weight conjecture has been reduced to simple groups by Navarro and Tiep. In this paper, we investigate the Navarro Alperin weight conjecture, which includes Galois automorphisms and group automorphisms in comparison with the…

Representation Theory · Mathematics 2026-04-23 Zhicheng Feng , Qulei Fu , Yuanyang Zhou

The Alperin weight conjecture was reduced to simple groups by the work of Navarro, Tiep and Sp\"ath. To prove Alperin weight conjecture, it suffices to show that all finite non-abelian simple groups are BAW-good. We reduce the verification…

Representation Theory · Mathematics 2022-07-12 Zhicheng Feng , Zhenye Li , Jiping Zhang

We formulate a number of related generalisations of the weight part of Serre's conjecture to the case of GL(n) over an arbitrary number field, motivated by the formalism of the Breuil-M\'ezard conjecture. We give evidence for these…

Number Theory · Mathematics 2021-03-29 Toby Gee , Florian Herzig , David Savitt

We give a criterion that simplifies the checking of the inductive Alperin weight condition for the remaining open cases of simple groups of Lie type. It is strongly related in form to the criterion of the second author for the inductive…

Representation Theory · Mathematics 2020-09-07 Julian Brough , Britta Späth

The inductive blockwise Alperin weight condition is a system of conditions whose verification for all non-abelian finite simple groups would imply the blockwise Alperin weight conjecture. We establish this condition for the groups $G_2(q)$,…

Representation Theory · Mathematics 2016-03-17 Elisabeth Schulte

This article discusses the modular representation theory of finite groups of Lie type from the viewpoint of Broue's abelian defect group conjecture. We discuss both the defining characteristic case, the inspiration for Alperin's weight…

Representation Theory · Mathematics 2022-11-02 Raphael Rouquier

By the reduction theorems of Navarro--Tiep and Sp\"ath, a way to prove the Alperin weight conjecture and its blockwise version is to verify the co-called inductive Alperin weight condition and inductive blockwise Alperin weight condition…

Representation Theory · Mathematics 2021-04-01 Zhicheng Feng , Conghui Li , Jiping Zhang

The weights for a finite group G with respect to a prime number p where introduced by Jon Alperin, in order to formulate his celebrated conjecture. In 1992, Everett Dade formulates a refinement of Alperin's conjecture involving ordinary…

Group Theory · Mathematics 2010-06-29 Lluis Puig
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