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Constructive Approximation : Grundlehren der mathematischen Wissenschaften - Ronald A. DeVore

Constructive Approximation

Grundlehren der mathematischen Wissenschaften


Published: October 1993
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The purpose of this book and its sequel is to give a connected, unified exposition of Approximation Theory for functions of one real variable. Great care has been taken to provide reliable and good proofs, and to establish a logical selection of material, with emphasis on principal results. The history of the subject is not neglected. Methods of functional analysis are used when necessary, as are complex variable methods for real problems. Practical algorithms of approximation are included. Important old results are not missing, but at least half of the material has never yet appeared in books. The first book describes spaces of functions: Sobolev, Lipschitz, Besov rearrangement-invariant function spaces, interpolation of operators. Then we have Weierstrass and best approximation theorems, properties of polynomials and of splines: inequalities, interpolation (also Birkhoff), zero properties. Approximation by operators treats positive operators, projections, also those of minimal norm, saturation phenomena, a modern theory of Bernstein polynomials. Chapters on splines deal with the selection of knots, splines with equidistant, dyadic, fixed and free knots, with identification of approximation spaces, further with orthogonal projections onto splines, cardinal splines, shape preserving algorithms. With no equally comprehensive and up-to-date competitor in the available literature, these two volumes will be a welcome reference for a wide audience of mathematicians and engineers. They can be used as the basis for courses, or as a means to enter research in the subject.

"This is a stimulating book and a mine of useful techniques and results..." Bulletin of the LMS

1. Theorems of Weierstrass.- 2. Spaces of Functions.- 3. Best Approximation.- 4. Properties of Polynomials.- 5. Splines.- 6. K-Functionals and Interpolation Spaces.- 7. Central Theorems of Approximation.- 8. Influence of Endpoints in Polynomial Approximation.- 9. Approximation by Operators.- 10. Bernstein Polynomials.- 11. Approximation of Classes of Functions, Muntz Theorems.- 12. Spline Approximation.- 13. Spline Interpolation and Projections onto Spline Spaces.

ISBN: 9783540506270
ISBN-10: 3540506276
Series: Grundlehren der mathematischen Wissenschaften
Audience: Professional
Format: Hardcover
Language: English
Number Of Pages: 452
Published: October 1993
Publisher: Springer-Verlag Berlin and Heidelberg Gmbh & Co. Kg
Country of Publication: DE
Dimensions (cm): 23.4 x 15.6  x 3.18
Weight (kg): 1.83