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Speaker:
Jonathan P. Pridham
Affiliation:
Cambridge
Date:
Thu, 12/04/2012 - 10:30 - 12:00
Location:
MPIM Lecture Hall
Parent event:
Seminar Algebraic Geometry (SAG) Bloch defined a semiregularity map on the obstruction space of any LCI embedding in a
smooth scheme X, and showed that it annihilates curvilinear obstructions. Buchweitz and
Flenner extended this to a map on the obstruction space of any coherent sheaf on X. I will
show how this map is related to an Abel-Jacobi map from the deformation space to
Deligne cohomology, and why this means it must annihilate all obstructions.
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