Key points are not available for this paper at this time.
We will develop a formal non-commutative (NC) deformation theory of smooth algebraic varieties X defined over a field k, and describe a semi-universal deformation where the tangent space T¹ and the obstruction space T² are given as subspaces of Hochschild cohomology groups.
Yūjirō Kawamata (Fri,) studied this question.