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Twisted cubics on a cubic fourfold

Lundi, 5 Novembre, 2012 - 15:00
Prénom de l'orateur : 
Manfred
Nom de l'orateur : 
LEHN
Résumé : 

I will report on joint work (in progress) with C. Lehn,
C. Sorger and D. van Straten on a proposal for a
construction of a new family of 8-dimensional symplectic
manifold. Preliminary calculations of the Euler number
make it likely that the family parametrises deformation
of the Hilbertscheme Hilb^4 of a K3-Surface. The construction
involves classical geometry of singular cubic surfaces,
twisted cubic curves and geometric invariant theory
constructions.

Institution de l'orateur : 
Universite de Mayence
Thème de recherche : 
Algèbre et géométries
Salle : 
04
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