Analysis of Spherical Symmetries in Euclidean Spaces

Claus Müller

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English

Springer-Verlag New York Inc.
20 November 1997

Algebra; Functional analysis & transforms; Euclidean geometry; Maths for scientists; Maths for engineers

Series: Applied Mathematical Sciences

This book gives a new and direct approach into the theories of special functions with emphasis on spherical symmetry in Euclidean spaces of ar bitrary dimensions. Essential parts may even be called elementary because of the chosen techniques. The central topic is the presentation of spherical harmonics in a theory of invariants of the orthogonal group. H. Weyl was one of the first to point out that spherical harmonics must be more than a fortunate guess to simplify numerical computations in mathematical physics. His opinion arose from his occupation with quan tum mechanics and was supported by many physicists. These ideas are the leading theme throughout this treatise. When R. Richberg and I started this project we were surprised, how easy and elegant the general theory could be. One of the highlights of this book is the extension of the classical results of spherical harmonics into the complex. This is particularly important for the complexification of the Funk-Hecke formula, which is successfully used to introduce orthogonally invariant solutions of the reduced wave equation. The radial parts of these solutions are either Bessel or Hankel functions, which play an important role in the mathematical theory of acoustical and optical waves. These theories often require a detailed analysis of the asymptotic behavior of the solutions. The presented introduction of Bessel and Hankel functions yields directly the leading terms of the asymptotics. Approximations of higher order can be deduced.

By: Claus Müller
Imprint: Springer-Verlag New York Inc.
Country of Publication: United States
Edition: 1998 ed.
Volume: 129
Dimensions: Height: 235mm, Width: 155mm, Spine: 14mm
Weight: 1.140kg
ISBN: 9780387949499
ISBN 10: 0387949496
Series: Applied Mathematical Sciences
Pages: 226
Publication Date: 20 November 1997
Audience: College/higher education , Professional and scholarly , Further / Higher Education , Undergraduate
Format: Hardback
Publisher's Status: Active

1 Notations and Basic Theorems>.- 1 The General Theory 9.- §2 Primitive Spaces.- §3 The Completeness.- §4 The Funk-Hecke Formula.- §5 Representations and Interpolations.- §6 Homogeneous Harmonics.- 2 The Specific Theories.- §7 The Legendre Polynomials.- §8 The Laplace Integrals.- §9 The Gegenbauer Polynomials.- §10 The Associated Legendre Functions.- §1 The Associated Spaces yjn(q).- §12 Harmonic Differential Operators.- §13 Maxwell’s Theory of Multipoles.- 3 Spherical Harmonics and Differential Equations.- §14 The Laplace-Beltrami Operators.- §15 Spherical Harmonics as Eigenfunctions.- §16 The Legendre Differential Equation.- §17 The Legendre Functions as Hypergeometric Functions.- 4 Analysis on the Complex Unit Spheres.- §18 Homogeneous Harmonics in ?q.- §19 Invariant Integrals on S*q-1.- §20 Complexification of the Funk-Hecke Formula.- §21 An Alternative System of Legendre Functions.- 5 The Bessel Functions.- §22 Regular Bessel Functions.- §23 Regular Hankel Functions.- §24 Recursive and Asymptotic Relations.- §25 Addition Formulas for Hankel Functions of Order Zero.- §26 Exponential Integrals with Bessel Functions.- §27 The Traditional Notations.- 6 Integral Transforms.- §28 Fourier Integrals.- §29 The Fourier Representation Theorem.- §30 The Parseval Identity.- §31 Examples.- 7 The Radon Transform.- §32 Radon Transforms and Fourier Transforms.- §33 Radon Transforms and Spherical Symmetries.- §34 The Nicholson Formulas.- 8 Appendix.- §35 The ?-Function..- §36 The Hypergeometric Function.- §37 Elementary Asymptotics.- References.