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SUMMARY:Robert Lazarsfeld (Stony Brook University)
DTSTART:20200811T170000Z
DTEND:20200811T180000Z
DTSTAMP:20260423T021233Z
UID:ZAG/39
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/ZAG/39/">Cay
 ley-Bacharach theorems and multiplier ideals</a>\nby Robert Lazarsfeld (St
 ony Brook University) as part of ZAG (Zoom Algebraic Geometry) seminar\n\n
 \nAbstract\nCayley-Bacharach theorems originate in the classical statement
  if two plane curves of degrees c and d meet in  cd  points\, then any cur
 ve of degree (c + d - 3) passing through all but one of these points must 
 also pass through the remaining one. Following work of Griffiths and Harri
 s in the 1970s\, one now sees this as a special case of a general result a
 bout zero-loci of sections of a vector bundle. I will explain how bringing
  multiplier ideals into the picture leads (for free) to a variant that all
 ows for excess vanishing. This is joint work with Lawrence Ein.\n
LOCATION:https://researchseminars.org/talk/ZAG/39/
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