Penn Arts & Sciences Logo

Deformation Theory Seminar

Wednesday, June 7, 2017 - 2:00pm

Vasily Dolgashev

Temple U


University of Pennsylvania

4C2 or 4N30

I will introduce a class of formal deformations of a
symplectic manifold M in the case when the base ring of the
deformation problem involves parameters of non-positive degrees.
I will show how to describe equivalence classes of these
formal deformations in terms of cohomology
of M. This result is a generalization of a theorem due to
Bertelson, Cahen, Deligne and Gutt. My talk is based on joint paper
arXiv:1702.06930 with Elif Altinay-Ozaslan.