A group representation on a vector space is a group homomorphism from a group to the group of invertible linear transformations on a vector space.
In this course, we explain the definition and basic properties of group representations, and then explain the definition and basic properties of group characters.
The aim of this course is to explain fundamental facts in the representation theory of finite groups.
The goal of this course is to be able to write down explicitly character tables of some groups of small order, such as symmetric groups and dihedral groups.
finite group, symmetric group, representation, character, character table
✔ Specialist skills | Intercultural skills | Communication skills | Critical thinking skills | Practical and/or problem-solving skills |
Standard lecture course
Course schedule | Required learning | |
---|---|---|
Class 1 | Definition and examples of groups | Details will be provided during each class session |
Class 2 | Definition and examples of group representations | Details will be provided during each class session |
Class 3 | Complete reducibility of group representations | Details will be provided during each class session |
Class 4 | Schur's lemma on group representations | Details will be provided during each class session |
Class 5 | Commutants of group representations | Details will be provided during each class session |
Class 6 | Definition and examples of group characters | Details will be provided during each class session |
Class 7 | Basic properties of group characters | Details will be provided during each class session |
To enhance effective learning, students are encouraged to spend approximately 30 minutes preparing for class and another 30 minutes reviewing class content afterwards (including assignments) for each class.
They should do so by referring to textbooks and other course material.
None required
Bruce E. Sagan, The Symmetric Group, GTM, No. 203, Springer
Course scores are evaluated by homework assignments. Details will be announced during the course.
linear algebra and basic undergraduate algebra