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SUMMARY:Schaper Layers of Specht Modules - Liam Jolliffe
DTSTART:20190523T150000Z
DTEND:20190523T160000Z
UID:TALK125611@talks.cam.ac.uk
CONTACT:Richard Freeland
DESCRIPTION:One of the most useful tools we have for determining the decom
 position numbers of the symmetric group is the study of Schaper's filtrati
 on of the Specht modules. This filtration gives rise to a sum formula anal
 ogous to the famous Jantzen sum formula. This formula gives an upper bound
  on the decomposition numbers\, as well as determining precisely which are
  zero. In this talk we will try to better understand the layers of this fi
 ltration\, which will improve the upper bound given by the formula.
LOCATION:CMS\, MR9
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