activity
20242026
collaborators

11 papers

math.RT2026

Intersections of blocks of cyclotomic Hecke algebras

Maria Chlouveraki, Gunter Malle

Trinh and Xue have proposed a startling conjecture on intersections of blocks of cyclotomic Hecke algebras occurring in modular representation theory of finite reductive groups. We…

math.GR2025

Subnormalisers of semisimple elements in finite groups of Lie type

Gunter Malle

We determine subnormalisers of semisimple elements of prime power order in finite quasi-simple groups of Lie type. For this, we determine the maximal overgroups of normalisers of S…

math.RT2025

The Picky Conjecture for groups of Lie type

Gunter Malle, A. A. Schaeffer Fry

Recently, Moretó and Rizo proposed a conjecture, known as the Picky Conjecture, proposing new character correspondences extending the McKay Conjecture. We prove the Picky Conjectu…

math.GR2025

Picky elements, subnormalisers, and character correspondences

Gunter Malle

We gather evidence on a new local-global conjecture of Moretó and Rizo on values of irreducible characters of finite groups. For this we study subnormalisers and picky elements in…

math.RT2025

Generic weights for finite reductive groups

Zhicheng Feng, Gunter Malle, Jiping Zhang

This paper is motivated by the study of Alperin's weight conjecture in the representation theory of finite groups. We generalize the notion of -cuspidality in the -Harish-Cha…

math.RT2025

Jordan correspondence and block distribution of characters

Radha Kessar, Gunter Malle

We complete the determination of the -block distribution of characters for quasi-simple exceptional groups of Lie type up to some minor ambiguities relating to non-uniqueness…