Abstract: I will compare deformations of algebras to deformations of schemes in the setting of invariant theory. This is joint work with Jan Kleppe. We study deformations (abstract and embedded) of a scheme X which is a good quotient of a quasi affine scheme in some Spec S by a linearly reductive group G andcompare them to invariant deformations of S. This generalizes known results for comparing deformations of Proj S with those of S. As a bi-product we get results on generalized Euler sequences on X via the group action.
Nov 18, 2013 | 04:15 PM
SR 119, Arnimallee 3