

Research  
Representation theory of finite groups, especially modular representation theory.  
My main focus at the moment is on Donovan's conjecture and the classification of Morita equivalence classes of blocks of finite groups. Because of work with Kessar, Külshammer and Sambale, Donovan's conjecture is known for 2blocks with elementary abelian defect groups, that is, there are only finitely many Morita equivalence classes of such blocks. This opens the question of classifying the Morita equivalence classes. This research was funded by EPSRC grant Morita equivalence classes of blocks. An important tool in classifying Morita equivalence classes, and an interesting invariant in its own right, is the Picard group. Research into Picard groups, amongst other things, continues in the EPSRC funded grant Representation theory over local rings, which is a joint project with Radha Kessar at City, University of London.  
Block library  
I have set up this wiki site for cataloguing blocks of finite groups up to Morita equivalence and recording progress on Donovan's conjecture. If you would like to contribute, then please let me know.  
Teaching  
I am lecturing MATH10202 Linear Algebra A with Mark Kambites.  
Research students 

Claudio Marchi Cesare Ardito Elliot Mckernon Inga Schwabrow (completed 2016) The centre of a block Pornrat Ruengrot (completed 2011) Perfect isometry groups for blocks of finite groups Stavros Apostolou (completed 2009) Generalisations of the representation theory of psolvable groups  
Recent papers  
(with M. Livesey) Some examples of Picard groups of blocks, to appear, J. Algebra (with F. Eisele and M. Livesey) Donovan's conjecture, blocks with abelian defect groups and discrete valuation rings, to appear, Math. Z. Morita equivalence classes of blocks with elementary abelian defect groups of order 16, arXiv 1612.03485 (with M. Livesey) Donovan's conjecture and blocks with abelian defect groups, Proc. AMS. 147 (2019), 963970. (with M. Livesey) Towards Donovan's conjecture for abelian defect groups, arXiv 1711.05357, J. Algebra 519 (2019), 3961. (with M. Livesey) Classifying blocks with abelian defect groups of rank 3 for the prime 2, J. Algebra 515 (2018), 118. (with M. Livesey) Loewy lengths of blocks with abelian defect groups, Proc. AMS Ser. B 4 (2017), 2130 Morita equivalence classes of $2$blocks of defect three, Proc. AMS 144 (2016), 19611970 (with R. Kessar, B. Külshammer and B. Sambale) $2$blocks with abelian defect groups, Adv. Math. 254 (2014), 706735 (with A. Moreto) Extending Brauer's height zero conjecture to blocks with nonabelian defect groups, Int. Math. Res. Not. 2014 (2014), 55815601.(available electronically) (with J. An) Nilpotent blocks of quasisimple groups for the prime two, Alg. Rep. Theor 16 (2013), 128 (with B. Külshammer and B. Sambale) $2$blocks with minimal nonabelian defect groups, II, J. Group Theory 15 (2012), 311321. (with J. An) Blocks with extraspecial defect groups of finite quasisimple groups, J. Algebra 328 (2011), 301321 (with D.Craven, R.Kessar and M.Linckelmann), The structure of blocks with a Klein four defect group, Math. Zeit. 268 (2011), 441476 (with J. An) Nilpotent blocks of quasisimple groups for odd primes, J. Reine Angew. Math. 656 (2011), 131177 
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Last Modified 21/11/18
