EAN: 9783319427027

Bilder-Quelle: discount24.de - Sport-Freizeit

This monograph presents fundamental aspects of modern spectral and other computational methods which are not generally taught in traditional courses. It emphasizes concepts as errors convergence stability order and efficiency applied to the solution of physical problems. The spectral methods consist in expanding the function to be calculated into a set of appropriate basis functions (generally orthogonal polynomials) and the respective expansion coefficients are obtained via collocation equations. The main advantage of these methods is that they simultaneously take into account all available information rather only the information available at a limited number of mesh points. They require more complicated matrix equations than those obtained in finite difference methods. However the elegance speed and accuracy of the spectral methods more than compensates for any such drawbacks. During the course of the monograph the authors examine the usually rapid convergence of the spectral expansions and the improved accuracy that results when nonequispaced support points are used in contrast to the equispaced points used in finite difference methods. In particular they demonstrate the enhanced accuracy obtained in the solutionof integral equations. The monograph includes an informative introduction to old and new computational methods with numerous practical examples while at the same time pointing out the errors that each of the available algorithms introduces into the specific solution. It is a valuable resource for undergraduate students as an introduction to the field and for graduate students wishing to compare the available computational methods. In addition the work develops the criteria required for students to select the most suitable method to solve the particular scientific problem that they are confronting.

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28.03.2025 um 05:35 Uhr

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