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SUMMARY:Nicholas Shepherd-Barron (King’s College London)
DTSTART:20220531T100000Z
DTEND:20220531T110000Z
DTSTAMP:20260423T040001Z
UID:ZAG/215
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/ZAG/215/">Pe
 riods of elliptic surfaces</a>\nby Nicholas Shepherd-Barron (King’s Coll
 ege London) as part of ZAG (Zoom Algebraic Geometry) seminar\n\n\nAbstract
 \nThe derivative of the period map for elliptic surfaces has a description
  in terms of where the j-invariant ramifies. This leads to a natural ortho
 normal basis of the (1\,1) part of the primitive cohomology\, expressed in
  terms of meromorphic 2-forms of the 2nd kind\, and to a generic Torelli t
 heorem. This extends to certain other families of varieties fibred in Cala
 bi-Yau varieties.\n
LOCATION:https://researchseminars.org/talk/ZAG/215/
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