Attività seminariale su: 1) Graded Cox rings; 2) Divisors class group and monoid of blow-up algebras I; 3) Divisors class group and monoid of blow-up algebras II; 4) Finitely generated modules from a cohomological point of view I; 5) An algebraic characterization of a certain family of rational functions; 6) A numerical characterization of affine subvarieties; 7) The algebraic technique for the geometry of rational sirfaces.