Personal tools
You are here: Home Events Semiregularity via derived algebraic geometry

Semiregularity via derived algebraic geometry

— filed under:

Jonathan P. Pridham (Cambridge) - Seminar Algebraische Geometrie (SAG)

What
  • Seminar
When Apr 12, 2012
from 10:30 am to 11:30 am
Where Hörsaal MPI, Vivatsgasse 7
Contact Name Sachinidis
Add event to calendar vCal
iCal

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.