A Course on Abstract Algebra

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.
Contents: PreliminariesAlgebraic Structure of NumbersBasic Notions of GroupsCyclic GroupsPermutation GroupsCounting TheoremsGroup HomomorphismsThe Quotient GroupFinite Abelian GroupsGroup ActionsSylow Theorems and ApplicationsIntroduction to Group PresentationsTypes of RingsIdeals and Quotient RingsRing HomomorphismsPolynomial RingsFactorizationIntroduction to ModulesFree ModulesVector Spaces over Arbitrary FieldsField ExtensionsAll About RootsGalois PairingApplications of the Galois Pairing
Readership: Advanced undergraduates and academics in pure mathematics.
Keywords:Set;Group;Group Action;Group Presentation;Ring;Ideal;PID;UFD;Euclidean Domain;Module;Field;Galois PairingReview:
Review of the First Edition:

“The text is greatly enriched by many varied and wonderful examples, all carefully worked out, and revealing some of the more subtle points of the theories. This is the text's greatest asset … the authors have succeeded in writing a solid and complete text with many rich and varied examples that introduces the basics of modern algebra to the undergraduate audience.”
Mathematical Reviews
Key Features:This book uses straightforward and simple English and is especially useful for students who are non-native speakers of EnglishThe amount of exercises in this book is reasonable unlike most of the textbooks in the marketThis textbook is theoretically oriented. It does not emphasize on tedious computation which tends to become boring after a whileWell-designed curriculum