Mathematics Department - Math 551 - Abstract Algebra I

Math 551 - Abstract Algebra I

This is a standard course for beginning graduate students. It covers Group Theory, basic Ring & Module theory, and bilinear forms.

Prerequisites: Any standard course in abstract algebra for undergraduate students.

Current semester (Fall 2015)

Prof. A. Buch
Meets MTh 4; 1:40-3:00 in H425
Main Text: N. Jacobson, Basic Algebra I, II

This is a standard course for beginners. We will consider a lot of examples.
Group Theory: Basic concepts, isomorphism theorems, normal subgroups, Sylow theorems, direct products and free products of groups. Groups acting on sets: orbits, cosets, stabilizers. Alternating/Symmetric groups.
Basic Ring Theory: Fields, Principal Ideal Domains (PIDs), matrix rings, division algebras, field of fractions.
Modules over a PID: Fundamental Theorem for abelian groups, application to linear algebra: rational and Jordan canonical form.
Bilinear Forms: Alternating and symmetric forms, determinants. Spectral theorem for normal matrices, classification over R and C. (Class supplement provided)
Modules: Artinian and Noetherian modules. Krull-Schmidt Theorem for modules of finite length. Simple modules and Schur's Lemma, semisimple modules. (from Basic Algebra II)
Finite-dimensional algebras: Simple and semisimple algebras, Artin-Wedderburn Theorem, group rings, Maschke's Theorem. (Class supplement provided)

Previous Semesters


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