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UID:5110@i2m.univ-amu.fr
DTSTART;TZID=Europe/Paris:20240404T110000
DTEND;TZID=Europe/Paris:20240404T120000
DTSTAMP:20240524T072506Z
URL:https://www.i2m.univ-amu.fr/evenements/tba-60-2/
SUMMARY: (...): Real forms and automorphism groups: some open questions
DESCRIPTION:: A real form of a complex variety X is a real variety whose co
 mplexification is isomorphic to X. Many varieties\, for example curves or 
 abelian varieties\, are known to only have finitely many isomorphism class
 es of real forms. Recently\, there has been some development in the field
 : now\, there are examples of projective varieties (in fact\, even surface
 s) with infinitely many nonisomorphic real forms\, and of affine surfaces 
 with uncountably many. There are still some interesting questions once can
  pose\, especially in connection with the automorphism group of the variet
 y. I will give an overview of the field and relevant notions\, and survey 
 some open problems.
CATEGORIES:Séminaire,Géométrie et Topologie de Marseille
LOCATION:I2M Saint-Charles - Salle de séminaire\, Université Aix-Marseill
 e\, Campus Saint-Charles\, 3 Place Victor Hugo\, Marseille\, 13003\, Franc
 e
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Université Aix-Marseille\,
  Campus Saint-Charles\, 3 Place Victor Hugo\, Marseille\, 13003\, France;X
 -APPLE-RADIUS=100;X-TITLE=I2M Saint-Charles - Salle de séminaire:geo:0,0
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DTSTART:20240331T030000
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