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SUMMARY:Symplectic fillings and spinal open books
DTSTART:20260422T141500
DTEND:20260422T151500
DTSTAMP:20260430T144201Z
UID:29f24a5e93bc2ccab3eafcd448e5728d7edcbb46fe71b7c1656c71c9
CATEGORIES:Conferences - Seminars
DESCRIPTION:Annika Thiele\, Humboldt-Universität zu Berlin\nThe classifi
 cation of the symplectic fillings of a given contact 3-manifold poses an i
 nteresting problem. It is motivated by results that demonstrate that the s
 ymplectic fillings of a contact 3-manifold hold information on the contact
  structure. Most notably\, the contact structure of any contact 3-manifold
  that admits a strong symplectic filling is tight. Although the symplectic
  fillings of certain contact manifolds have been classified\, the general 
 classification remains an open problem. Working towards this\, one can con
 sider the geography problem for symplectic fillings. In the paper Spine re
 moval surgery and the geography of symplectic fillings\, Sam Lisi and Chri
 s Wendl prove the existence of a universal bound for the geography (Euler 
 characteristic and signature) of possible minimal strong symplectic fillin
 gs of a closed contact 3-manifold with a supporting planar spinal open boo
 k decomposition. Following a brief introduction to symplectic and contact 
 topology\, the aim of my talk is to explain Lisi and Wendl's result. For t
 his purpose\, I will provide an overview of symplectic fillings and the re
 lated geography problem\, and introduce spinal open book decompositions. 
  \n\n 
LOCATION:MA B1 504 https://plan.epfl.ch/?room==MA%20B1%20504
STATUS:CONFIRMED
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