代数
Douban
（英文版·第2版）
Algebra，Second Edition
（美） Michael Artin
Sinossi
本书由著名代数学家与代数几何学家Michael Artin所著，是作者在代数领域数十年的智慧和经验的结晶。书中既介绍了矩阵运算、群、向量空间、线性算子、对称等较为基本的内容，又介绍了环、模型、域、伽罗瓦理论等较为高深的内容。本书对于提高数学理解能力，增强对代数的兴趣是非常有益处的。此外，本书的可阅读性强，书中的习题也很有针对性，能让读者很快地掌握分析和思考的方法。
作者结合这20年来的教学经历及读者的反馈，对本版进行了全面更新，更强调对称性、线性群、二次数域和格等具体主题。本版的具体更新情况如下：
新增球面、乘积环和因式分解的计算方法等内容，并补充给出一些结论的证明，如交错群是简单的、柯西定理、分裂定理等。
修订了对对应定理、SU2 表示、正交关系等内容的讨论，并把线性变换和因子分解都拆分为两章来介绍。
新增大量习题，并用星号标注出具有挑战性的习题。
本书在麻省理工学院、普林斯顿大学、哥伦比亚大学等著名学府得到了广泛采用，是代数学的经典教材之一。
contents
Preface
1 Matrices
1.1 The Basic Operations
1.2 Row Reduction
1.3 The Matrix Transpose
1.4 Deternunants
1.5 Permutations
1.6 Other Formulas for the Determinant
Exercises
2 Groups
2.1 Laws ofComposition
2.2 Groups and Subgroups
2.3 Subgroups of the Additive Group of Intege
2.4 Cyclic Groups
2.5 Homomorphisms
2.6 Isomorphisms
2.7 Equivalence Relations and Partitions
2.8 Cosets
2.9 Modular Arithmetic
2.10 The Correspondence Theorem
2.11 Ptoduct Groups
2.12 Quotient Groups
Exercises
3 VectorSpaces
3.1 SubspacesoflRn
3.2 Fields
3.3 Vector Spaces
3.4 Bases and Dimension
3.5 Computing with Bases
3.6 DirectSums
3.7 Infinite-DimensionalSpaces
Exercises
4 LinearOperators
4.1 The Dimension Formula
4.2 The Matrix of a Linear Transformation
4.3 Linear Operators
4.4 Eigenvectors
4.5 The Characteristic Polynomial
4.6 Triangular and DiagonaIForms
4.7 JordanForm
Exercises
5 Applications ofLinear Operators
5.1 OrthogonaIMatrices and Rotations
5.2 Using Continuity
5.3 Systems ofDifferentialEquations
5.4 The Matrix Exponential
Exercises
6 Symmetry
6.1 Symmetry ofPlane Figures
6.2 Isometries
6.3 Isometries ofthe Plane
6.4 Finite Groups of Orthogonal Operators on the Pl
6.5 Discrete Groups oflsometries
6.6 Plane Crystallographic Groups
6.7 Abstract Symmetry: Group Operations
6.8 The Operation on Cosets
6.9 The Counting Formula
6.10 Operations on Subsets
6.11 Permutation Representations
6.12 Finite Subgroups ofthe Rotation Group
Exercises
7 More Group Theory
7.1 Cayley's Theorem
7.2 The Class Equation
7.3 Groups
7.4 The Class Equation of the IcosahedraIGroup
7.5 Conjugationin the Symmetric Group
7.6 Normalizers
7.7 The Sylow Theorems
7.8 Groups ofOrder12
7.9 TheFreeGroup
7.10 Generators and Relations
7.11 The Todd-Coxeter Algorithm
Exercises
8 BilinearForms
8.1 BilinearForms
8.2 SymmetricForms
……
9 Linear Groups
10 Group Representations
11 Rings
12 Factoring
13 Quadratic Number Fields
14 Linear Algebra in a Ring
15 Fields
16 Galois theory
