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SUMMARY:Nicki Magill (Cornell University)
DTSTART:20221213T160000Z
DTEND:20221213T170000Z
DTSTAMP:20260423T022625Z
UID:Geolis/103
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/Geolis/103/"
 >Symplectic embeddings of Hirzebruch surfaces</a>\nby Nicki Magill (Cornel
 l University) as part of Geometria em Lisboa (IST)\n\n\nAbstract\nThe four
  dimensional ellipsoid embedding function of a toric symplectic manifold M
  measures when a symplectic ellipsoid embeds into M. It generalizes the Gr
 omov width and ball packing numbers. In 2012\, McDuff and Schlenk computed
  this function for a ball. The function has a delicate structure known as 
 an infinite staircase. This implies infinitely many obstructions are neede
 d to know when an embedding can exist. Based on work with McDuff\, Pires\,
  and Weiler\, we will discuss the classification of which Hirzebruch surfa
 ces have infinite staircases. We will focus on the part of the argument wh
 ere symplectic embeddings are constructed via almost toric fibrations.\n
LOCATION:https://researchseminars.org/talk/Geolis/103/
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