# Fundamentals of Matrix Computations, 3rd Edition

ISBN: 978-0-470-52833-4
664 pages
July 2010

## Description

This new, modernized edition provides a clear and thorough introduction to matrix computations,a key component of scientific computing

Retaining the accessible and hands-on style of its predecessor, Fundamentals of Matrix Computations, Third Edition thoroughly details matrix computations and the accompanying theory alongside the author's useful insights. The book presents the most important algorithms of numerical linear algebra and helps readers to understand how the algorithms are developed and why they work.

Along with new and updated examples, the Third Edition features:

• A novel approach to Francis' QR algorithm that explains its properties without reference to the basic QR algorithm
• Application of classical Gram-Schmidt with reorthogonalization
• A revised approach to the derivation of the Golub-Reinsch SVD algorithm
• New coverage on solving product eigenvalue problems
• Expanded treatment of the Jacobi-Davidson method
• A new discussion on stopping criteria for iterative methods for solving linear equations

Throughout the book, numerous new and updated exercises—ranging from routine computations and verifications to challenging programming and proofs—are provided, allowing readers to immediately engage in applying the presented concepts. The new edition also incorporates MATLAB to solve real-world problems in electrical circuits, mass-spring systems, and simple partial differential equations, and an index of MATLAB terms assists readers with understanding the basic concepts related to the software.

Fundamentals of Matrix Computations, Third Edition is an excellent book for courses on matrix computations and applied numerical linear algebra at the upper-undergraduate and graduate level. The book is also a valuable resource for researchers and practitioners working in the fields of engineering and computer science who need to know how to solve problems involving matrix computations.

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Preface.

Acknowledgments.

1 Gaussian Elimination and Its Variants.

1.1 Matrix Multiplication.

1.2 Systems of Linear Equations.

1.3 Triangular Systems.

1.4 Positive Definite Systems; Cholesky Decomposition.

1.5 Banded Positive Definite Systems.

1.6 Sparse Positive Definite Systems.

1.7 Gaussian Elimination and the LU Decomposition.

1.8 Gaussain Elimination and Pivoting.

1.9 Sparse Gaussian Elimination.

2 Sensitivity of Linear Systems.

2.1 Vector and Matrix Norms.

2.2 Condition Numbers.

2.3 Perturbing the Coefficient Matrix.

2.4 A Posteriori Error Analysis Using the Residual.

2.5 Roundoff Errors; Backward Stability.

2.6 Propagation of Roundoff Errors.

2.7 Backward Error Analysis of Gaussian Elimination.

2.8 Scaling.

2.9 Componentwise Sensitivity Analysis.

3 The Least Squares Problem.

3.1 The Discrete Square Problem.

3.2 Orthogonal Matrices, Rotators and Reflectors.

3.3 Solution of the Least Squares Problem.

3.4 The Gram-Schmidt Process.

3.5 Geometric Approach.

3.6 Updating the QR Decomposition.

4 The Singular Value Decomposition.

4.1 Introduction.

4.2 Some Basic Applications of Singular Values.

4.3 The SVD and the Least Squares Problem.

4.4 Sensitivity of the Least Squares Problem.

5 Eigenvalues and Eigenvectors I.

5.1 Systems of Differential Equations.

5.2 Basic Facts.

5.3 The Power Method and Some Simple Extensions.

5.4 Similarity Transforms.

5.5 Reduction to Hessenberg and Tridiagonal Forms.

5.6 Francis's Algorithm.

5.7 Use of Francis's Algorithm to Calculate Eigenvectors.

5.8 The SVD Revisted.

6 Eigenvalues and Eigenvectors II.

6.1 Eigenspaces and Invariant Subspaces.

6.2 Subspace Iteration and Simultaneous Iteration.

6.3 Krylov Subspaces and Francis's Algorithm.

6.4 Large Sparse Eigenvalue Problems.

6.5 Implicit Restarts.

6.6 The Jacobi-Davidson and Related Algorithms.

7 Eigenvalues and Eigenvectors III.

7.1 Sensitivity of Eigenvalues and Eigenvectors.

7.2 Methods for the Symmetric Eigenvalue Problem.

7.3 Product Eigenvalue Problems.

7.4 The Generalized Eigenvalue Problem.

8 Iterative Methods for Linear Systems.

8.1 A Model Problem.

8.2 The Classical Iterative Methods.

8.3 Convergence of Iterative Methods.

8.4 Descent Methods; Steepest Descent.

8.5 On Stopping Criteria.

8.6 Preconditioners.

8.8 Derivation of the CG Algorithm.

8.9 Convergence of the CG Algorithm.

8.10 Indefinite and Nonsymmetric Problems.

References.

Index.

Index of MATLAB Terms.

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## Author Information

DAVID S. WATKINS, PhD, is Professor in the Department of Mathematics at Washington State University. He has published more than 100 articles in his areas of research interest, which include numerical linear algebra, numerical analysis, and scientific computing.
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