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BEGIN:VEVENT
UID:6267@i2m.univ-amu.fr
DTSTART;TZID=Europe/Paris:20211118T140000
DTEND;TZID=Europe/Paris:20211118T150000
DTSTAMP:20250118T132944Z
URL:https://www.i2m.univ-amu.fr/evenements/tropical-obstructions-to-stable
 -rationality/
SUMMARY:Johannes NICAISE (KU Leuven and Imperial College London): Tropical 
 obstructions to stable rationality
DESCRIPTION:Johannes NICAISE: It is an old and thorny problem in algebraic 
 geometry to determine which projective hypersurfaces are rational\, or\, m
 ore generally\, stably rational\, meaning that they become rational when w
 e take the product with a projective space of sufficiently large dimension
 . After summarizing the principal known results\, I will explain how one c
 an use degeneration techniques and tropical methods to find new classes of
  non-stably rational hypersurfaces and complete intersections. This talk i
 s based on joint work with John Christian Ottem.\n&nbsp\;\n\n&nbsp\;
ATTACH;FMTTYPE=image/jpeg:https://www.i2m.univ-amu.fr/wp-content/uploads/2
 021/10/Johannes_Nicaise.jpg
CATEGORIES:Groupe de travail,Singularités,Virtual event
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