星期一, 28 十一月, 2011 - 11:30
Prénom de l'orateur :
Francesco
Nom de l'orateur :
Sala
Résumé :
After a brief introduction on the theory of framed sheaves
and their moduli spaces, I will give a description of a modified Atiyah class of a family of framed sheaves, which allows to define a framed version of the Kodaira-Spencer map. Moreover, I will construct closed two-forms on the moduli spaces of framed sheaves on surfaces.
As an application, I will define a symplectic structure on the moduli spaces of framed sheaves on the second Hirzebruch surface. This generalizes a result of Bottacin for the locally free case.
Institution de l'orateur :
USTL Lille
Thème de recherche :
Algèbre et géométries
Salle :
04