BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:Measuring when a line bundle on a curve is trivial
DTSTART:20240424T130000Z
DTEND:20240424T140000Z
DTSTAMP:20240530T153900Z
UID:indico-event-251@events.dm.unipi.it
DESCRIPTION:Speakers: David Holmes (Leiden)\n\nGiven a family of smooth pr
oper curves C/S and a line bundle L on C\, the locus of points of S over w
hich L is trivial is a natural invariant of the family. For applications i
n enumerative geometry\, it is necessary to extend this construction to fa
milies of stable (or prestable) curves. However\, this ends up naturally
yielding a cycle\, not on S itself\, but rather on a blowup of S. One can
choose to push down to S\, but I will try to convince the audience that\,
for some purposes\, the cycle on the blowup is the more fundamental objec
t. I will then describe two ways to compute the resulting class on the blo
wup.\n\nhttps://events.dm.unipi.it/event/251/
LOCATION:Aula Seminari (Department of Mathematics)
URL:https://events.dm.unipi.it/event/251/
END:VEVENT
END:VCALENDAR