UnitLevel 3Undergraduate

MTH3150 Algebra 2: Rings and fields

Faculty of Science

MTH3150 Algebra 2: Rings and fields is a level 3, 6-credit-point, undergraduate unit from the Faculty of Science, offered in 2026 in Semester 2 at Clayton. It has no prerequisites.

Credit points
6
Offered in 2026
Semester 2
Clayton
Assessment
Exam 50%
and 1 other task

This is the 2026 handbook entry. See the 2027 entry.

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Requisites

Before MTH3150

No prerequisites or corequisites besides the enrolment rules below.

After MTH3150

No unit lists MTH3150 as a prerequisite in the 2026 handbook.

Enrolment rules

PREREQUISITE: You must have passed one unit from MTH2121 or MTH3121 or MTH2141 or MTH3141 or be enrolled in the Master of Mathematics.

Overview

Rings, fields, ideals, number fields and algebraic extension fields. Coding theory applications of finite fields. Gaussian integers, Hamilton's quaternions. Euclidean Algorithm in rings.

Offerings in 2026

Teaching periodCampusMode
Second semesterClaytonOn campus

Assessment

  • Continuous assessmentDemonstration
    50%
  • Final assessment - Exam (3 hours and 10 minutes)Examination
    50%

Assessment details may change. Please refer to the assessment information in Moodle closer to the start of the teaching period.

Learning outcomes

When you finish this unit, you should be able to:

  1. 1

    Formulate abstract concepts in algebra;

  2. 2

    Use a variety of proof-techniques to prove mathematical results;

  3. 3

    Work with the most commonly occurring rings and fields: integers, integers modulo n, matrix rings, rationals, real and complex numbers, more general structures such as number fields and algebraic extension fields, splitting fields, algebraic integers and finite fields;

  4. 4

    Demonstrate understanding of different types of rings, such as integral domains, principal ideal domains, unique factorisation domains, Euclidean domains, fields, skew-fields; amongst these are the Gaussian integers and the quaternions - the best-known skew field;

  5. 5

    Demonstrate understanding of the classification of finite fields;

  6. 6

    Generalise known concepts over the integers to other domains, for example, use the Euclidean algorithm or factorisation algorithms in the algebra of polynomials;

  7. 7

    Construct larger fields from smaller fields (field extensions and splitting fields);

  8. 8

    Apply field theory to coding theory and understand the classification of cyclic codes.

Workload and teaching

  • Applied sessions22 hours
  • Seminars36 hours
  • Teaching approachActive learning
  • Three 1-hour seminars;
  • One 2-hour applied class (in weeks 2-12) and
  • 7 hours of independent study per week.

Active learning will occur in lectures and applied classes: regular written assignments will assist you in your  revision and learning process; it will teach you to apply the theory discussed in the lectures to explicit problems in algebra. The applied classes will foster group work and discussions: you will collaborate in small groups to work on selected problems. This will foster team-working skills, problem solving skills, and mathematical communication skills (written and oral).

Learning resources

Required resources

Typed skeleton notes

This is a typed version of the lectures notes, but without proofs and significant examples.

Handwritten lecture notes

These are lecture notes that will be prepared live during the lectures; the pdf will be uploaded immediately after each lecture.

Lecture recordings

Echo360 recordings will be provided.

Additional material

The lecturer will upload supplementary material (non-examinable) to cater for students who are interested in further studies.

Recommended resources

The lecturer will recommend a couple of algebra text books; these books are not required, but interested students are encouraged to look up topics in various text books.

Where it fits

MTH3150 is part of 6 areas of study in the 2026 handbook.

Contacts

Chief Examiners
Dr Melissa Lee
Unit Coordinators
Dr Melissa Lee

Common questions

What are the prerequisites for MTH3150?

MTH3150 has no prerequisites, but enrolment rules apply.

When is MTH3150 offered?

In 2026, MTH3150 runs in Semester 2 at Clayton.

Does MTH3150 have an exam?

Yes. The exam is worth 50% of the final mark, alongside 1 other task.

Which majors and minors include MTH3150?

MTH3150 is part of Applied mathematics, Mathematical statistics, Mathematics and Pure mathematics.

More details

Credit points
6
Level
3
Study level
Undergraduate
Faculty
Faculty of Science
Organisational unit
School of Mathematics
Type
Coursework
EFTSL
0.125
Student contribution
SCA Band 1
Study abroad
Available