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A First Course in Abstract Algebra: Rings, Groups, and Fields 3/e

A First Course in Abstract Algebra: Rings, Groups, and Fields 3/e

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Description
Like its popular predecessors, A First Course in Abstract Algebra: Rings, Groups, and Fields, Third Edition develops ring theory first by drawing on students’ familiarity with integers and polynomials. This unique approach motivates students in the study of abstract algebra and helps them understand the power of abstraction. The authors introduce groups later on using examples of symmetries of figures in the plane and space as well as permutations.

The text includes straightforward exercises within each chapter for students to quickly verify facts, warm-up exercises following the chapter that test fundamental comprehension, and regular exercises concluding the chapter that consist of computational and supply-the-proof problems. Historical remarks discuss the history of algebra to underscore certain pedagogical points. Each section also provides a synopsis that presents important definitions and theorems, allowing students to verify the major topics from the section.

Features
  • Offers options for using the text in a one- or two-semester undergraduate course
  • Uses integers and polynomials as the motivating examples for studying rings first
  • Introduces the important proof technique of induction
  • Presents many examples that illustrate the power of abstract algebra
  • Covers the fundamental isomorphism theorem and Sylow theorems
  • Demonstrates the impossibility of solving the quintic equation with radicals
  • Contains a variety of exercises, including computational problems, with some hints and solutions at the back of the book

New To This Edition
  • Makes it easier to teach unique factorization as an optional topic
  • Reorganizes the core material on rings, integral domains, and fields
  • Includes a more detailed treatment of permutations
  • Introduces more topics in group theory, including new chapters on Sylow theorems
  • Provides many new exercises on Galois theory
Table of Contents
I. Numbers, Polynomials, and Factoring 
1. The Natural Numbers 
2. The Integers 
3. Modular Arithmetic 
4. Polynomials with Rational Coefficients
5. Factorization of Polynomials

II. Rings, Domains, and Fields 
6. Rings 
7. Subrings and Unity 
8. Integral Domains and Fields 
9. Ideals 
10. Polynomials over a Field 

III. Ring Homomorphisms and Ideals 
11. Ring Homomorphisms
12. The Kernel 
13. Rings of Cosets 
14. The Isomorphism Theorem for Rings 
15. Maximal and Prime Ideals 
16. The Chinese Remainder Theorem 

IV. Groups 
17. Symmetries of Geometric Figures 
18. Permutations
19. Abstract Groups 
20. Subgroups 
21. Cyclic Groups 

V. Group Homomorphisms 
22. Group Homomorphisms 
23. Structure and Representation 
24. Cosets and Lagrange's Theorem 
25. Groups of Cosets
26. The Isomorphism Theorem for Groups 

VI. Topics from Group Theory 
27. The Alternating Groups 
28. Sylow Theory: The Preliminaries 
29. Sylow Theory: The Theorems 
30. Solvable Groups 

VII. Unique Factorization 
31. Quadratic Extensions of the Integers 
32. Factorization
33. Unique Factorization 
34. Polynomials with Integer Coefficients 
35. Euclidean Domains 

VIII. Constructibility Problems 
36. Constructions with Compass and Straightedge 
37. Constructibility and Quadratic Field Extensions 
38. The Impossibility of Certain Constructions 

IX. Vector Spaces and Field Extensions 
39. Vector Spaces I
40. Vector Spaces II 
41. Field Extensions and Kronecker's Theorem 
42. Algebraic Field Extensions 
43. Finite Extensions and Constructibility Revisited 

X. Galois Theory 
44. The Splitting Field 
45. Finite Fields 
46. Galois Groups 
47. The Fundamental Theorem of Galois Theory
48. Solving Polynomials by Radicals 

Section X in a Nutshell
Hints and Solutions
Guide to Notation
Index
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