代数 pdf epub mobi txt 电子书 下载 2025

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
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