# Representation Theory and Algebraic Combinatorics Unit (Liron Speyer)

The Representation Theory and Algebraic Combinatorics Unit is interested in the study of the representation theory of many (usually finite-dimensional) algebras relating to symmetric groups. These include many famous examples, including the deformations known as Iwahori–Hecke algebras, their generalisations to deformations of complex reflection groups (the cyclotomic Hecke algebras), their quasi-hereditary covers (cyclotomic q-Schur algebras and Cherednik algebras), quiver Hecke algebras, and many other related diagram algebras. The common ground shared by these algebras is a powerful combinatorial framework that governs their representation theory, such as (multi)partitions and standard tableaux, often also giving these algebras a so-called cellular structure.

We are especially interested in making progress on the decomposition number problem, that seeks to understand the simple constituents of the ordinary irreducible modules in the modular case, as well as other problems that fit into the framework of 'decomposing representations'.

### Related mathematicians

Below are some mathematicians with research interests similar to those of this unit.

- Susumu Ariki, Osaka University
- Huanchen Bao, National University of Singapore
- Christine Bessenrodt, Leibniz Universität Hannover
- Chris Bowman, University of York
- Jonathan Brundan, University of Oregon
- Mahir Can, Tulane University
- Joseph Chuang, City, University of London
- Anton Cox, City, University of London
- Matthew Fayers, Queen Mary University of London
- Eugenio Giannelli, Università degli Studi di Firenze

- Alexander Kleshchev, University of Oregon
- Sinéad Lyle, University of East Anglia
- Andrew Mathas, University of Sydney
- Robert Muth, Washington and Jefferson College
- Euiyong Park, University of Seoul
- Michael Reeks, Bucknell University
- Louise Sutton, University of Manchester
- Weiqiang Wang, University of Virginia
- Mark Wildon, Royal Holloway, University of London