Deformation of algebras and modules (Ch. Geiss)
-----------------------------------------------

1) Schemes of modules and algebras; interpretation of tangential
    spaces as Ext^1_A(M,M) resp. as H^2(A,A).
2) Infinitesimal and formal deformations of modules and algebras;
    interpretation of obstructions via Ext^2_A(M,M) resp. H^3(A,A).
    dg-Lie algebra structures on Ext^* and H^*.
3) Applications: A local criterion for smoothness, decomposition
    theory for module varietes after Crawley-Boevey and Schroeer.
4) Degenerations of modules and algebreas: An overview of
    fundamental results, examples and problems.