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 ISBN: 9780130084514  0130084514
 Cover: Hardcover
 Copyright: 11/11/2002
This topselling, theoremproof book presents a careful treatment of the principle topics of linear algebra, and illustrates the power of the subject through a variety of applications. It emphasizes the symbiotic relationship between linear transformations and matrices, but states theorems in the more general infinitedimensional case where appropriate.Chapter topics cover vector spaces, linear transformations and matrices, elementary matrix operations and systems of linear equations, determinants, diagonalization, inner product spaces, and canonical forms.For statisticians and engineers.
Preface  ix  

1  (63)  

1  (5)  

6  (10)  

16  (8)  

24  (11)  

35  (7)  

42  (16)  

58  (6)  

62  (2)  

64  (83)  

64  (15)  

79  (7)  

86  (13)  

99  (11)  

110  (9)  

119  (8)  

127  (20)  

145  (2)  

147  (52)  

147  (5)  

152  (16)  

168  (14)  

182  (17)  

198  (1)  

199  (46)  

199  (10)  

209  (13)  

222  (10)  

232  (6)  

238  (7)  

244  (1)  

245  (84)  

245  (16)  

261  (22)  

283  (30)  

313  (16)  

328  (1)  

329  (153)  

329  (12)  

341  (16)  

357  (12)  

369  (10)  

379  (19)  

398  (7)  

405  (17)  

422  (29)  

451  (13)  

464  (8)  

472  (10)  

480  (2)  

482  (66)  

482  (15)  

497  (19)  

516  (8)  

524  (24)  
Index of Definitions  548  (1)  
Appendices  549  (22)  

549  (2)  

551  (1)  

552  (3)  

555  (6)  

561  (10)  
Answers to Selected Exercises  571  (18)  
Index  589 
The language and concepts of matrix theory and, more generally, of linear algebra have come into widespread usage in the social and natural sciences, computer science, and statistics. In addition, linear algebra continues to be of great importance in modern treatments of geometry and analysis. The primary purpose of this fourth edition ofLinear Algebrais to present a careful treatment of the principal topics of linear algebra and to illustrate the power of the subject through a variety of applications. Our major thrust emphasizes the symbiotic relationship between linear transformations and matrices. However, where appropriate, theorems are stated in the more general infinitedimensional case. For example, this theory is applied to finding solutions to a homogeneous linear differential equation and the best approximation by a trigonometric polynomial to a continuous function. Although the only formal prerequisite for this book is a oneyear course in calculus, it requires the mathematical sophistication of typical junior and senior mathematics majors. This book is especially suited for a second course in linear algebra that emphasizes abstract vector spaces, although it can be used in a first course with a strong theoretical emphasis. The book is organized to permit a number of different courses (ranging from three to eight semester hours in length) to be taught from it. The core material (vector spaces, linear transformations and matrices, systems of linear equations, determinants, diagonalization, and inner product spaces) is found in Chapters 1 through 5 and Sections 6.1 through 6.5. Chapters 6 and 7, on inner product spaces and canonical forms, are completely independent and may be studied in either order. In addition, throughout the book are applications to such areas as differential equations, economics, geometry, and physics. These applications are not central to the mathematical development, however, and may be excluded at the discretion of the instructor. We have attempted to make it possible for many of the important topics of linear algebra to be covered in a onesemester course. This goal has led us to develop the major topics with fewer preliminaries than in a traditional approach. (Our treatment of the Jordan canonical form, for instance, does not require any theory of polynomials.) The resulting economy permits us to cover the core material of the book (omitting many of the optional sections and a detailed discussion of determinants) in a onesemester fourhour course for students who have had some prior exposure to linear algebra. Chapter 1 of the book presents the basic theory of vector spaces: subspaces, linear combinations, linear dependence and independence, bases, and dimension. The chapter concludes with an optional section in which eve prove that every infinitedimensional vector space has a basis. Linear transformations and their relationship to matrices are the subject of Chapter 2. We discuss the null space and range of a linear transformation, matrix representations of a linear transformation, isomorphisms, and change of coordinates. Optional sections on dual spaces and homogeneous linear differential equations end the chapter. The application of vector space theory and linear transformations to systems of linear equations is found in Chapter 3. We have chosen to defer this important subject so that it can be presented as a consequence of the preceding material. This approach allows the familiar topic of linear systems to illuminate the abstract theory and permits us to avoid messy matrix computations in the presentation of Chapters 1 and 2. There are occasional examples in these chapters, however, where we solve systems of linear equations. (Of course, these examples are not a part of the theoretical development.) The necessary background is contained in Section 1.4. Determinants, the subject of Chapter 4, are of much less importance than they
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