University of Cambridge > Talks.cam > Algebraic Geometry Seminar > Semiregularity via derived deformation theory

Semiregularity via derived deformation theory

Add to your list(s) Download to your calendar using vCal

  • UserJon Pridham (Cambridge)
  • ClockWednesday 25 January 2012, 14:15-15:15
  • HouseMR4, CMS.

If you have a question about this talk, please contact Caucher Birkar.

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 a Chern character from the deformation space to Deligne cohomology, and why this means it must annihilate all obstructions.

This talk is part of the Algebraic Geometry Seminar series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

 

© 2006-2024 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity