This package provides tools for calculating tangent and obstruction spaces as well as power series solutions for deformation problems involving isolated singularities and projective schemes.
A basic description of the package's approach to deformation problems can be found at the documentation node for versalDeformation. For details and mathematical background seeThe numerous examples presented in the documentation nodes for versalDeformation and localHilbertScheme are classical deformation problems, considered in the following articles:
The author thanks Jan Christophersen for helpful hints, especially regarding the computation of T2.