Subsections

## Algebra I (MAT 534, Fall semester)

1. Groups (5 weeks)
• Direct products, Normal subgroups, Quotient groups, and the isomorphism theorems.
• Groups acting on sets; orbits and stabilizers. Applications: class formula, centralizers and normalizers, centers of finite p-groups. Conjugacy classes of Sn
• Sylow's Theorems, Solvable groups, Simple groups, simplicity of An. Examples: Finite groups of small order (8).
• Structure of finitely generated abelian groups. Free groups. Applications.

References: Lang, Chapter I; Dummit and Foote, Part I; Rotman.

2. Basic linear algebra (3 weeks)
• Vector spaces, Linear dependence/independence, Bases, Matrices and linear maps. Dual vector space, quotient vector spaces, isomorphism theorems.
• Determinants, basic properties. Eigenspaces and eigenvectors, characteristic polynomial.
• Inner products and orthonormal sets. Spectral theorem for normal operators (finite dimensional case).

References: Lang, Chapters XIII and XIV; Dummit and Foote, Chapter 11.

3. Rings, modules and algebras (6 weeks)
• Rings, subrings, fields, ideals, homomorphisms, isomorphism theorems, polynomial rings.
• Integral domains, Euclidean domains, PID's. UFD's and Gauss's Lemma ( F[x1,..., xn] is an UFD). Examples.
• Prime ideals, maximal ideals. The Chinese remainder Theorem. Fields of fractions.
• The Wedderburn Theorem (no proof). Simplicity and semisimplicity.
• Noetherian rings and the Hilbert Basis Theorem.
• Finitely generated modules over PID's, the structure theorem.

References: Lang, Chapters II, III, V, and VI; Jacobson, Chapter 2; Dummit and Foote, Part II.

### Typical References:

• S. Lang, Algebra,

• Jacobson, Basic Algebra,
2nd ed, W.H. Freeman, New York, 1985, 1989.

• Dummit and Foote, Abstract Algebra,
2nd ed, John Wiley, 1999.

• Rotman, Introduction to the Theory of Groups,
Springer Verlag.