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Description
The Theory of Matrices in Numerical AnalysisThis text explores aspects of matrix theory that are most useful in developing and appraising computational methods for solving systems of linear equations and for finding characteristic roots. Suitable for advanced undergraduates and graduate students, it assumes an understanding of the general principles of matrix algebra, including the Cayley Hamilton theorem, characteristic roots and vectors, and linear dependence. An introductory chapter covers
This text explores aspects of matrix theory that are most useful in developing and appraising computational methods for solving systems of linear equations and for finding characteristic roots. Suitable for advanced undergraduates and graduate students, it assumes an understanding of the general principles of matrix algebra, including the Cayley-Hamilton theorem, characteristic roots and vectors, and linear dependence.An introductory chapter covers the Lanczos algorithm, orthogonal polynomials, and determinantal identities. Succeeding chapters examine norms, bounds, and convergence; localization theorems and other inequalities; and methods of solving systems of linear equations. The final chapters illustrate the mathematical principles underlying linear equations and their interrelationships. Topics include methods of successive approximation, direct methods of inversion, normalization and reduction of the matrix, and proper values and vectors. Each chapter concludes with a helpful set of references and problems.
Binding Type: Paperback
Publisher: Dover Publications
Published: 01/20/2006
ISBN: 9780486449722
Pages: 257
Weight: 0.65lbs
Size: 8.16h x 5.38w x 0.61d
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★★★★★ 5
Sturdy umbrella base
Sturdy umbrella base. Heavy duty and should not blow over in the wind. Will hold up for years.
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Reviewed in the United States on March 23, 2026
★★★★★ 5
Great
It is very sturdy, you can fill it with water or sand, easy to move around and the perfect base for any patio umbrella. I love it
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Reviewed in the United States on April 27, 2026
★★★★★ 5
Sturdy umbrella base
It’s really nice and sturdy umbrella base with wheels. The wheels make it easier to move wherever you want. Very easy to set up.
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Reviewed in the United States on April 22, 2026
★★★★★ 5
Exactly what I was looking for
These are exactly what I needed. I like the fact that you fill them with water so at the end of the season, I just emptied them and take them to my shed for storage. I also like that they have wheels on the bottom that rolls my umbrella around anywhere. They’re well with the money.
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Reviewed in the United States on February 11, 2026
★★★★★ 5
Makes moving your umbrella around a breeze.
Size: 100LBS
This is best idea in umbrella stands. Decent price. I love that the water intake/release is on the side. Many are on top of the stand. Doesn't leak. Easy to move around and easy to put together with the included tools. I have 2. One for a very heavy 10 x 6' umbrella, and the other for a very light 1/2 round umbrella. Works equally well for both. One tricky part the instructions don't include is that is parts F and J are 'in place' in the base and you need to remove them to re attach them to the cylinder, or what they refer to as the "stand pole". So, if you are looking for parts (and I did this twice), just remember you will find them on the underside of large plastic umbrella base. Both are black, and so not immediately apparent. Love that there are two locking wheels and they include an extra screw. IKEA could learn a few things here.
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Reviewed in the United States on August 6, 2025
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