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SUMMARY:Filippo Fagioli (Università di Roma La Sapienza)
DTSTART:20210506T123000Z
DTEND:20210506T133000Z
DTSTAMP:20260423T024507Z
UID:GeoSem/23
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/GeoSem/23/">
 Pointwise push-forward formulae for flag bundles and their applications in
  positivity</a>\nby Filippo Fagioli (Università di Roma La Sapienza) as p
 art of Geometry Seminar - University of Florence\n\n\nAbstract\nIn this ta
 lk\, after recalling some basics on flag bundles associated to holomorphic
  vector bundles\, I present a result that provides the pointwise\, Hermiti
 an version of a universal push-forward formula for flag bundles valid in c
 ohomology. As an application\, I explain how to use the above result to ob
 tain the positivity of several polynomials in the Chern forms of a Griffit
 hs positive vector bundle. This gives a partial confirmation of a conjectu
 re proposed by Griffiths in the late sixties\, which has raised interest i
 n the past as well as in recent years. This talk is based on a joint work 
 with S. Diverio.\n
LOCATION:https://researchseminars.org/talk/GeoSem/23/
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