A Course on Abstract Algebra 2/e [Eie] 9789813229624

🔸書名:A Course on Abstract Algebra 2/e
商品編號: MA0435H



This textbook provides an introduction to abstract algebra for advanced undergraduate students. Based on the authors' notes at the Department of Mathematics, National Chung Cheng University, it contains material sufficient for three semesters of study. It begins with a description of the algebraic structures of the ring of integers and the field of rational numbers. Abstract groups are then introduced. Technical results such as Lagrange's theorem and Sylow's theorems follow as applications of group theory. The theory of rings and ideals forms the second part of this textbook, with the ring of integers, the polynomial rings and matrix rings as basic examples. Emphasis will be on factorization in a factorial domain. The final part of the book focuses on field extensions and Galois theory to illustrate the correspondence between Galois groups and splitting fields of separable polynomials.

Three whole new chapters are added to this second edition. Group action is introduced to give a more in-depth discussion on Sylow's theorems. We also provide a formula in solving combinatorial problems as an application. We devote two chapters to module theory, which is a natural generalization of the theory of the vector spaces. Readers will see the similarity and subtle differences between the two. In particular, determinant is formally defined and its properties rigorously proved.

The textbook is more accessible and less ambitious than most existing books covering the same subject. Readers will also find the pedagogical material very useful in enhancing the teaching and learning of abstract algebra.




1 Preliminaries
2 Algebraic Structure of Numbers
3 Basic Notions of Groups
4 Cyclic Groups
5 Permutation Groups
6 Counting Theorems
7 Group Homomorphisms
8 The Quotient Group
9 Finite Abelian Groups
10 Group Actions
11 Sylow Theorems and Applications
12 Introduction to Group Presentations
13 Types of Rings
14 Ideals and Quotient Rings
15 Ring Homomorphisms
16 Polynomial Rings
17 Factorization
18 Introduction to Modules
19 Free Modules
20 Vector Spaces over Arbitrary Fields
21 Field Extensions
22 All About Roots
23 Galois Pairing
24 Applications of the Galois Pairing