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SUMMARY:Defect zero block enumeration [Oberseminar Darstellungstheorie]
DTSTART:20260522T121500Z
DTEND:20260522T131500Z
DTSTAMP:20260517T135200Z
UID:indico-event-1299@math-events.uni-bonn.de
DESCRIPTION:Speakers: Thomas Gerber (Université Lyon 1)\n\nIn finite grou
 p theory\, modular representations are assembled into blocks. A famous res
 ult states that\, up to a few characteristic 2 and 3 exceptions\, every fi
 nite simple group has a defect 0 block (i.e.\, a singleton block).\nIn thi
 s talk\, I will explain how to establish similar results in two different 
 directions: for unipotent representations of finite classical groups\, and
  for representations of Hecke algebras. In fact\, in our context\, blocks 
 will be labelled by certain (multi)partitions called cores\, and our entir
 e approach will become combinatorial.\nThis is based on joint work with Em
 ily Norton\, Nathan Chapelier\, Nicolas Jacon\, Cédric Lecouvey and Sylvi
 e Corteel.\n\nhttps://math-events.uni-bonn.de/event/1299/
LOCATION:MPIM\, Vivatsgasse\,  7 - Lecture Hall (Max Planck Institute for 
 Mathematics)
URL:https://math-events.uni-bonn.de/event/1299/
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