  # Spectral Methods Using Multivariate Polynomials On The Unit Ball

## 1st Edition

Chapman and Hall/CRC

272 pages

Hardback: 9780367345471
pub: 2019-11-05
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### Description

Spectral Methods Using Multivariate Polynomials on the Unit Ball is a research level text on a numerical method for the solution of partial differential equations. The authors introduce, illustrate with examples, and analyze 'spectral methods' that are based on multivariate polynomial approximations. The method presented is an alternative to finite element and difference methods for regions that are diffeomorphic to the unit disk, in two dimensions, and the unit ball, in three dimensions. The speed of convergence of spectral methods is usually much higher than that of finite element or finite difference methods.

Features

• Introduces the use of multivariate polynomials for the construction and analysis of spectral methods for linear and nonlinear boundary value problems
• Suitable for researchers and students in numerical analysis of PDEs, along with anyone interested in applying this method to a particular physical problem
• One of the few texts to address this area using multivariate orthogonal polynomials, rather than tensor products of univariate polynomials.

1. Introduction. 1.1 An illustrative example. 1.2 Transformation of problem. 1.3 Function spaces. 1.4 Variational reformulation. 1.5 A spectral method. 1.6 Numerical example. 1.7 Exterior problems. 2 Multivariate Polynomials. 2.1 Multivariate polynomials. 2.2 Triple recursion relation. 2.3 Rapid evaluation of orthonormal polynomials. 2.4 A Clenshaw algorithm. 2.5 Best approximation. 2.6 Quadrature over the unit disk, unit ball, and unit sphere. 2.7 Least squares approximation. 2.8 Matlab programs and numerical examples. 3 Creating Transformations of Regions. 3.1 Constructions of □ ф. 3.2 An integration-based mapping formula. 3.3 Iteration methods. 3.4 Mapping in three dimensions. 4 Galerkin's method for the Dirichlet and Neumann Problems. 4.1 Implementation. 4.2 Convergence analysis. 4.3 The Neumann problem. 4.4 Convergence analysis for the Neumann problem. 4.5 The Neumann problem with = 0. 4.6 De ning surface normals and Jacobian for a general surface. 5 Eigenvalue Problems. 5.1 Numerical solution - Dirichlet problem. 5.2 Numerical examples - Dirichlet problem. 5.3 Convergence analysis - Dirichlet problem. 5.4 Numerical solution - Neumann problem. 6 Parabolic problems. 6.1 Reformulation and numerical approximation. 6.2 Numerical examples. 6.3 Convergence analysis. 7 Nonlinear Equations. 7.2 Numerical examples. 7.3 Convergence analysis. 7.4 Neumann boundary value problem. 8 Nonlinear Neumann Boundary Value Problem. 8.1 The numerical method. 8.2 Numerical examples. 8.3 Error analysis. 8.4 An existence theorem for the three dimensional Stefan--Boltzmann problem. 9 The biharmonic equation. 9.1 The weak reformulation. 9.2 The numerical method. 9.3 Numerical Examples. 9.4 The eigenvalue problem. 10 Integral Equations. 10.1 Galerkin's numerical method. 10.2 Error analysis. 10.3 An integral equation of the rst kind

Kendall Atkinson is Professor Emeritus at University of Iowa as well as Fellow of the Society for Industrial & Applied Mathematics (SIAM). He received his PhD from University of Wisconsin – Madison and has had Faculty appointments at Indiana University, University of Iowa as well as Visiting appointments at Colorado State University, Australian National University, University of New South Wales, University of Queensland. His research interests include numerical analysis, integral equations, multivariate approximation, spectral methods

David Chien, PHD, is Professor in the Department of Mathematics at California State University San Marcos. He has authored journal articles in his areas of research interest, which include the numerical solution of integral equations and boundary integral equation methods.

Olaf Hansen is Professor of Mathematics, California State University San Marcos. He received his PhD from Johannes Gutenberg University, Mainz, Germany in 1994 and his research interests include Analysis and Numerical Approximation of Boundary and Initial Value Problems and Integral Equations.

### Subject Categories

MAT000000
MATHEMATICS / General
MAT004000
MATHEMATICS / Arithmetic
MAT007020
MATHEMATICS / Differential Equations / Partial
MAT021000
MATHEMATICS / Number Systems
MAT029020
MATHEMATICS / Probability & Statistics / Multivariate Analysis
MAT037000
MATHEMATICS / Functional Analysis
MAT041000
MATHEMATICS / Numerical Analysis