Modules of CovariantsExplores the decomposition of the circle of the coordinate ring of a G variety into a direct sum of simple submodules.
Integers and RingsCovers integers, rings, subrings, invertibility, divisors of zero, and equivalence relations in formal fractions.
Finite Abelian Groups & RingsExplores the classification of finite abelian groups and rings, emphasizing elementary divisors and properties of rings.