### 2022　Introduction to Algebra III

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Instructor(s)
Yatagawa Yuri  Minagawa Tatsuhiro
Class Format
Lecture / Exercise    (Face-to-face)
Media-enhanced courses
Day/Period(Room No.)
Fri3-8(H112)
Group
-
Course number
MTH.A203
Credits
2
2022
Offered quarter
3Q
Syllabus updated
2022/4/20
Lecture notes updated
-
Language used
Japanese
Access Index

### Course description and aims

Algebra is a discipline of mathematics that deals with abstract notions which generalize algebraic operations on various mathematical objects. The main subjects of of this course include basic notions and properties of groups, which are a mathematical object having just one operation. To help deeper understanding of the newly learnt concepts, each even-numbered class is devoted to a discussion session, where excercises are given related to the contents of the preceding lecture. This course will be succeeded by ``Introduction to Algebra IV'' in the fourth quarter.

The theory of groups is a basic language in mathematics and related sciences, and has an extremely wide variety of applications. To exploit groups effectively, however, one needs to be familiar with many concrete examples, not just having a grasp of them as an abstract notion. In this course, typical examples of groups will be provided as well as an abstract treatment of groups based on the notions of sets and maps.

### Student learning outcomes

To become familiar with important notions such as the axiom of groups, subgroups, residue classes, order, cyclic groups,　symmetric groups, homomorphisms of groups, normal subgroups, and the fundamental theorem on group homomorphisms.

To become able to prove by him/herself basic properties of these objects.

### Keywords

groups, subgroups, residue classes, orders, cyclic groups, symmetric groups, homomorphisms of groups, normal subgroups, the fundamental theorem on group homomorphisms

### Competencies that will be developed

 ✔ Specialist skills Intercultural skills Communication skills Critical thinking skills Practical and/or problem-solving skills

### Class flow

Standard lecture course accompanied by discussion sesssions.

### Course schedule/Required learning

Course schedule Required learning
Class 1 Definition of a group and examples Details will be provided during each class session.
Class 2 Discussion session Details will be provided during each class session.
Class 3 Subgroups Details will be provided during each class session.
Class 4 Discussion session Details will be provided during each class session.
Class 5 Order of an element of a group, cyclic groups Details will be provided during each class session.
Class 6 Discussion session Details will be provided during each class session.
Class 7 Symmetric groups Details will be provided during each class session.
Class 8 Discussion session Details will be provided during each class session.
Class 9 Right- and left-cosets by a subgroup Details will be provided during each class session.
Class 10 Discussion session Details will be provided during each class session.
Class 11 Normal subgroups, residue groups Details will be provided during each class session.
Class 12 Discussion session Details will be provided during each class session.
Class 13 Homomorphisms of groups, the fundamental theorem on group homomorphisms Details will be provided during each class session.
Class 14 Discussion session Details will be provided during each class session.

### Out-of-Class Study Time (Preparation and Review)

To enhance effective learning, students are encouraged to spend approximately 100 minutes preparing for class and another 100 minutes reviewing class content afterwards (including assignments) for each class.
They should do so by referring to textbooks and other course material.

### Textbook(s)

Shoichi Nakajima : Basics of Algebra and Arithmetic, Kyoritsu Shuppan Co., Ltd., 2000.

### Reference books, course materials, etc.

P.J. Cameron : Introduction to Algebra (second ed.), Oxford Univ. Press, 2008.
N. Jacobson : Basic Algebra I (second ed.), Dover，1985.
M. Artin : Algebra (second ed.), Addison-Wesley, 2011.
N. Herstein: Topics in algebra, John Wiley & Sons, 1975.
A. Weil: Number Theory for Beginners, Springer-Verlag, 1979.

### Assessment criteria and methods

Based on evaluation of the results for discussion session and final examination. Details will be announced during a lecture.

### Related courses

• MTH.A201 ： Introduction to Algebra I
• MTH.A202 ： Introduction to Algebra II
• MTH.A204 ： Introduction to Algebra IV

### Prerequisites (i.e., required knowledge, skills, courses, etc.)

Students are supposed to have completed [Linear Algebra I / Recitation], [Linear Algebra II], [Linear Algebra Recitation II], [Introduction to Algebra I] and [Introduction to Algebra II].

### Other

None in particular.