Instructor: Dr. Gyula Lakos

Text:  Miles Reid: Undergraduate Commutative Algebra

Prerequisite: An introductory algebra course covering such basic concepts as groups, rings, fields and ideals of a ring.

Course description: 'Commutative algebra' is the nickname of the study of commutative rings. Besides being a fascinating topic by itself, it is an indispensable tool for studying such mainstream areas of present-day mathematics as algebraic geometry and algebraic number theory. It also has applications in combinatorics. Topics:

Ideals. Prime and maximal ideals. Zorn's lemma. Nilradical, Jacobson radical. The prime spectrum.

Modules. Operations on submodules. Finitely generated modules. Nakayama's lemma. Exact sequences. Tensor product of modules.

Noetherian rings. Chain conditions for modules and rings. Hilbert basis theorem. Primary ideals. Primary decomposition, the Lasker-Noether theorem. Krull dimension. Artinian rings.

Localization. Rings and modules of fractions. Local properties. Extended and contracted ideals.

Integral dependence. Integral closure. The going-up and going-down theorems. Valuations. Discrete valuation rings. Dedekind domains. Fractional ideals.

Varieties. Nullstellensatz. Zariski topology. Coordinate ring. Singular and non-singular points. Tangent space.

Dimension theory. Various dimensions. Krull's principal ideal theorem. Hilbert functions. Regular local rings. Hilbert's syzygy theorem.