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MATH41950

Academic Year 2026/2027

Random Matrix Theory (MATH41950)

Subject:
Mathematics
College:
Science
School:
Mathematics & Statistics
Level:
4 (Masters)
Credits:
5
Module Coordinator:
Dr Harriet Walsh
Trimester:
Autumn
Mode of Delivery:
On Campus
Internship Module:
No
How will I be graded?
Letter grades

Curricular information is subject to change.

This is an introductory course in random matrix theory (RMT), which is an active field of research with applications to theoretical physics, combinatorics, number theory and the theory of machine learning.

Random matrices provide natural models of large systems with complex interactions; some of their earliest applications were to species population dynamics in ecosystems and the energy levels of nuclei. They are also fascinating objects in their own right. This module focuses on a core theme of RMT: the phenomena one observes in the eigenvalues of an N x N random matrix, as N grows large. In many cases, these phenomena are universal; that is, the same limiting phenomena arise in rather different models.

Students will learn how key models in RMT are constructed, and how to apply various tools to describe and analyse eigenvalue distributions in these models. Connections with combinatorics and theoretical physics will be explored.

About this Module

Learning Outcomes:

At the end of this module, successful students will:
-- Be familiar with central models in RMT, such as Wigner and Wishart random matrices, and Gaussian ensembles and circular ensembles, and some of their real-life applications
-- Know how to define probability densities on matrices, and how to define and compute a Haar measure
-- Understand how to characterise eigenvalues of random matrices in terms of joint distributions and empirical measures
-- Understand Girko’s circular law
-- Understand Wigner’s semi-circle law, and how it relates to the combinatorics of non-crossing partitions
-- Understand how matrix integrals are computed, and how their asymptotic expansion relates to enumeration of certain graphs by genus.
-- Know how determinantal point processes are defined, and understand how they arise in certain random matrix models
-- Know how to describe local and scaling limits of joint distributions of eigenvalues of certain random matrix models, and be familiar with universal phenomena arising in these contexts.

The United Nations identified seventeen Sustainable Development Goals (SDGs) as core to the 2030 Agenda for Sustainable Development, and UCD contributes in general to SDG 4 Quality Education. Further SDGs explored within this module if relevant are listed below. A scale of 1 - 5 indicates the extent to which the SDG is covered.


 

Student Effort Hours:
Student Effort Type Hours
Specified Learning Activities

24

Autonomous Student Learning

50

Lectures

36

Total

110


Approaches to Teaching and Learning:
Lectures, tutorials, enquiry and problem-based learning.

Requirements, Exclusions and Recommendations

Not applicable to this module.


Module Requisites and Incompatibles
Not applicable to this module.
 

Assessment Strategy
Description Timing Component Scale Must Pass Component % of Final Grade Component repeat (in-module) Offered
Quizzes/Short Exercises: Exercises completed in tutorials. Week 2, Week 4, Week 6, Week 9, Week 11 Standard conversion grade scale 40% No
20
No
Exam (In-person): Mid-term exam. Week 8 Standard conversion grade scale 40% No
20
No
Exam (In-person): End of term exam. End of trimester
Duration:
2 hr(s)
Standard conversion grade scale 40% No
60
No

As part of UCD's student support, under the Additional Consideration policy, extensions may be available for the following assessments in the module: Assignment (including essay/poster), Portfolio, Reflective Assignment, Report(s), and Individual Project.


Carry forward of passed components
No
 

Resit In Terminal Exam
Spring Yes - 2 Hour
Please see Student Jargon Buster for more information about remediation types and timing. 

Feedback Strategy/Strategies

• Feedback individually to students, post-assessment
• Group/class feedback, post-assessment
• Self-assessment activities

How will my Feedback be Delivered?

Not yet recorded.

Timetabling information is displayed only for guidance purposes, relates to the current Academic Year only and is subject to change.
Autumn Lecture Offering 1 Week(s) - 1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12 Mon 14:00 - 15:50
Autumn Lecture Offering 1 Week(s) - 1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12 Thurs 11:00 - 11:50