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TZID:Europe/Vienna
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DTSTART:20230326T030000
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DTSTART:20231029T020000
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BEGIN:VEVENT
DTSTAMP:20260424T052116Z
UID:1680174000@ist.ac.at
DTSTART:20230330T130000
DTEND:20230330T150000
DESCRIPTION:Speaker: Giuseppe Ancona\nhosted by Tamas Hausel\nAbstract: The
  cup product on topological manifolds or the intersection product on algeb
 raic varieties induce quadratic forms which turn out to be a fine invarian
 t of these geometric objects. We will discuss some old theorems on the sig
 nature of these quadratic forms and some applications both of geometric an
 d arithmetic origins. Finally we will study an old conjecture of Grothendi
 eck about those signatures and explain some new evidences.
LOCATION:Heinzel Seminar Room (I21.EG.101)\, Office Building West\, ISTA\, 
 ISTA
ORGANIZER:birgit.oosthuizen-noczil@ist.ac.at 
SUMMARY:Giuseppe Ancona: Quadratic forms arising from geometry
URL:https://talks-calendar.ista.ac.at/events/4082
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