MATH 418 - Abstract Algebra II (Spring 2025)

| General Information | Homework | Lecture Notes | Other Resources |

This is a second course in abstract algebra. We will cover three main topics:

Galois theory is a subtle, yet beautiful subject which characterizes solutions to polynomial equations through connections between groups and fields. All but the last portion of the course will be spent building up to and proving fundamental results in this area, with applications to problems first considered thousands of years ago.

General Information

LectureMWF 1:00pm-1:50pm
1047 Sidney Lu Mechanical Engineering Building
TextbookDavid Dummit & Richard Foote
Abstract Algebra, 3rd Edition
Chapters 8, 9, 13-15 (roughly)
InstructorAndrew Hardt
Office: CAB 69B
Email: ahardt@illinois.edu
Office Hours: MF 2:00pm-2:50pm, CAB 69B
More Details Syllabus | Gradescope | If you can't access the Gradescope course, email me

Homework

Homework assignments are weekly, due at 9am on Wednesdays via Gradescope. Using LaTeX for your homework is encouraged, and you will receive 1 bonus point for each homework you typeset using LaTeX.

Lecture Notes

Important Course Events

Midterm Exam 1: Wednesday, 2/19, 7:00pm-8:30pm, Sidney Lu 1043
Midterm Exam 2: Wednesday, 3/26, 7:00pm-8:30pm, Sidney Lu 1043
Midterm Exam 3: Wednesday, 4/23, 7:00pm-8:30pm, Sidney Lu 1043
Final Exam: Tuesday 5/13 -- 8:00am-11:00am, Location TBD

Problem Sessions: Tuesdays, 3:00pm-4:20pm, Loomis Lab 143

Background and Other Resources

Background

Most of the necessary background for this course was covered in Math 417: Abstract Algebra I. Having a working knowledge of topics from that course will be invaluable in this one. All relevant material can be found in earlier sections of Dummit & Foote. In particular, Chapter 7 is an important prerequisite. If you haven't taken Math 416, it would be a good idea to read through Section 11.1 as well.

Galois Theory Resources

Algebraic Geometry Resources

2024 Course

Helpful Links

Bonus Links

Useful, relevant, and/or fun. Feel free to send me anything interesting you run across.