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Contemporary Linear Algebra



Contemporary Linear Algebra

Howard Anton, Robert C. Busby

ISBN: 978-0-471-16362-6 September 2002 656 Pages

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From one of the premier authors in higher education comes a new linear algebra textbook that fosters mathematical thinking, problem-solving abilities, and exposure to real-world applications. Without sacrificing mathematical precision, Anton and Busby focus on the aspects of linear algebra that are most likely to have practical value to the student while not compromising the intrinsic mathematical form of the subject. Throughout Contemporary Linear Algebra, students are encouraged to look at ideas and problems from multiple points of view.

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CHAPTER 1 Vectors 1

1.1 Vectors and Matrices in Engineering and Mathematics; n-Space 1

1.2 Dot Product and Orthogonality 15

1.3 Vector Equations of Lines and Planes 29

CHAPTER 2 Systems of Linear Equations 39

2.1 Introduction to Systems of Linear Equations 39

2.2 Solving Linear Systems by Row Reduction 48

2.3 Applications of Linear Systems 63

CHAPTER 3 Matrices and Matrix Algebra 79

3.1 Operations on Matrices 79

3.2 Inverses; Algebraic Properties of Matrices 94

3.3 Elementary Matrices; A Method for Finding A−1 109

3.4 Subspaces and Linear Independence 123

3.5 The Geometry of Linear Systems 135

3.6 Matrices with Special Forms 143

3.7 Matrix Factorizations; LU-Decomposition 154

3.8 Partitioned Matrices and Parallel Processing 166

CHAPTER 4 Determinants 175

4.1 Determinants; Cofactor Expansion 175

4.2 Properties of Determinants 184

4.3 Cramer’s Rule; Formula for A −1; Applications of Determinants 196

4.4 A First Look at Eigenvalues and Eigenvectors 210

CHAPTER 5 Matrix Models 225

5.1 Dynamical Systems and Markov Chains 225

5.2 Leontief Input-Output Models 235

5.3 Gauss–Seidel and Jacobi Iteration; Sparse Linear Systems 241

5.4 The Power Method; Application to Internet Search Engines 249

CHAPTER 6 Linear Transformations 265

6.1 Matrices as Transformations 265

6.2 Geometry of Linear Operators 280

6.3 Kernel and Range 296

6.4 Composition and Invertibility of Linear Transformations 305

6.5 Computer Graphics 318

CHAPTER 7 Dimension and Structure 329

7.1 Basis and Dimension 329

7.2 Properties of Bases 335

7.3 The Fundamental Spaces of a Matrix 342

7.4 The Dimension Theorem and Its Implications 352

7.5 The Rank Theorem and Its Implications 360

7.6 The Pivot Theorem and Its Implications 370

7.7 The Projection Theorem and Its Implications 379

7.8 Best Approximation and Least Squares 393

7.9 Orthonormal Bases and the Gram–Schmidt Process 406

7.10 QR-Decomposition; Householder Transformations 417

7.11 Coordinates with Respect to a Basis 428

CHAPTER 8 Diagonalization 443

8.1 Matrix Representations of Linear Transformations 443

8.2 Similarity and Diagonalizability 456

8.3 Orthogonal Diagonalizability; Functions of a Matrix 468

8.4 Quadratic Forms 481

8.5 Application of Quadratic Forms to Optimization 495

8.6 Singular Value Decomposition 502

8.7 The Pseudoinverse 518

8.8 Complex Eigenvalues and Eigenvectors 525

8.9 Hermitian, Unitary, and Normal Matrices 535

8.10 Systems of Differential Equations 542

CHAPTER 9 General Vector Spaces 555

9.1 Vector Space Axioms 555

9.2 Inner Product Spaces; Fourier Series 569

9.3 General Linear Transformations; Isomorphism 582

APPENDIX A How to Read Theorems A1

APPENDIX B Complex Numbers A3




"Enthusiasts will find the many historical remarks of interest." (Mathematika, No.50, 2005)

"...It deserves to become a popular textbook with instructor and student alike". (Zentralblatt MATH, Vol.1008, No.8, 2003)
  • Contemporary Linear Algebra meets the guidelines of the Linear Algebra Curriculum Study Group (LACSG).
  • The authors believe that a working knowledge of vectors in Rn and some experience with viewing functions as vectors is the right focus for this course. Material on Axiomatic vector spaces appears toward the end so as to avoid the wall of abstraction so many students encounter.
  • All major concepts are introduced early and revisited in more depth later on. This spiral approach to concept development ensures that all key topics can be covered in the course.
  • The text provides students with a strong geometric foundation upon which to build. In keeping with this goal, the text covers vectors first then proceeds to linear systems, which allows the authors to interpret parametric solutions of linear systems as geometric objects.
  • Looking Ahead features provide students with insight into the future role of the material currently being studied.
  • A wide range of applications throughout gives students a sense of the broad applicability of linear algebra. The applications include very modern topics such as global positioning and internet search procedures.
Each exercise set is broken into four categories:
  • Basic Exercises progressing in difficulty from drill to challenging.
  • Discussion and Discovery exercises that are more open-ended.
  • Working with Proofs exercises which ask students for precise proofs.
  • Technology Exercises that teach students how to use such tools as MatLab, Mathematica, Maple and Derive.
  • Theorems and proofs are presented with precision, but in a style appropriate for beginning students.