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SUMMARY:Para-abelian varieties and the Albanese map
DTSTART:20220308T101500
DTEND:20220308T120000
DTSTAMP:20260916T153514Z
UID:4f5a3d2e50efcf32bba630d370d5f82a517dd5f9661a9a4c51167236
CATEGORIES:Conferences - Seminars
DESCRIPTION:Stefan Schroer (Universität Düsseldorf)\nWe show that for ea
 ch scheme  that is separated and of finite type over a field\, and whose 
 affinization is   connected and reduced\, there is a universal morphism 
 to some para-abelian variety. The latter are schemes that acquire  the st
 ructure of an  abelian variety after some ground field extension. This ex
 tends a classical result   of Serre. The proof relies on the correspondi
 ng result in the proper case\, which was obtained before in a joint work w
 ith Bruno Laurent. The open case also relies on Macaulayfication\, removal
  of singularities by alterations\, pseudo-rational singularities\, and Boc
 kstein maps.
LOCATION:MA A1 10 https://plan.epfl.ch/?room==MA%20A1%2010
STATUS:CANCELLED
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