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SUMMARY:Heidi Goodson
DTSTART:20250429T163000Z
DTEND:20250429T173000Z
DTSTAMP:20260421T115312Z
UID:BC-Math/17
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/BC-Math/17/"
 >Math Colloquium: What is... an Ekedahl-Oort Stratification?</a>\nby Heidi
  Goodson as part of Brooklyn College Math Department Events\n\n\nAbstract\
 nThe word 'stratification' means an arrangement or classification of somet
 hing into different groups. The objects that I am interested in classifyin
 g are unitary Shimura varieties\, which are moduli spaces of abelian varie
 ties with extra structure that is too technical to define in an abstract. 
 There are two types of stratifications that are of interest to arithmetic 
 geometers: the Newton stratification\, where we arrange by isogeny classes
  of p-divisible groups\, and the Ekedahl-Oort stratification\, where we ar
 range by isogeny classes of p-torsion groups. The goals of this talk are t
 o build-up to a definition and understanding of the latter and to discuss 
 questions that we can ask about this stratification. There are many words 
 in this abstract that you may not have seen before so I will start from th
 e basics and include examples throughout the talk.\n
LOCATION:https://researchseminars.org/talk/BC-Math/17/
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