Partial Differential Equations of Mathematical Physics - 1st Edition - ISBN: 9780080137209, 9781483181363

Partial Differential Equations of Mathematical Physics

1st Edition

International Series of Monographs in Pure and Applied Mathematics

Authors: S. L. Sobolev
Editors: I. N. Sneddon S. Ulam M. Stark
eBook ISBN: 9781483181363
Imprint: Pergamon
Published Date: 1st January 1964
Page Count: 440
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Description

Pure and Applied Mathematics, Volume 56: Partial Differential Equations of Mathematical Physics provides a collection of lectures related to the partial differentiation of mathematical physics. This book covers a variety of topics, including waves, heat conduction, hydrodynamics, and other physical problems.

Comprised of 30 lectures, this book begins with an overview of the theory of the equations of mathematical physics that has its object the study of the integral, differential, and functional equations describing various natural phenomena. This text then examines the linear equations of the second order with real coefficients. Other lectures consider the Lebesgue–Fubini theorem on the possibility of changing the order of integration in a multiple integral. This book discusses as well the Dirichlet problem and the Neumann problem for domains other than a sphere or half-space. The final lecture deals with the properties of spherical functions.

This book is a valuable resource for mathematicians.

Table of Contents


Translation Editor's Preface

Author's Prefaces to the First and Third Editions

Lecture 1. Derivation Of The Fundamental Equations

§ 1. Ostrogradski's Formula

§ 2. Equation for Vibrations of a String

§ 3. Equation for Vibrations of a Membrane

§ 4. Equation of Continuity for Motion of a Fluid. Laplace's Equation

§ 5. Equation of Heat Conduction

§ 6. Sound Waves

Lecture 2. The Formulation of Problems of Mathematical Physics. Hadamard's Example

§ 1. Initial Conditions and Boundary Conditions

§ 2. The Dependence of the Solution on the Boundary Conditions. Hadamard's Example

Lecture 3. The Classification of Linear Equations of the Second Order

§ 1. Linear Equations and Quadratic Forms. Canonical Form of an Equation

§ 2. Canonical Form of Equations in Two Independent Variables

§ 3. Second Canonical Form of Hyperbolic Equations in Two Independent Variables

§ 4. Characteristics

Lecture 4. The Equation for a Vibrating String And Its Solution By D'Alembert's Method

§ 1. D'Alembert's Formula. Infinite String

§ 2. String with Two Fixed Ends

§ 3. Solution of the Problem for a Non-Homogeneous Equation and for More General Boundary Conditions

Lecture 5. Riemann's Method

§ 1. The Boundary-Value Problem of the First Kind for Hyperbolic Equations

§ 2. Adjoint Differential Operators

§ 3. Riemann's Method

§ 4. Riemann's Function for the Adjoint Equations

§ 5. Some Qualitative Consequences of Riemann's Formula

Lecture 6. Multiple Integrals: Lebesgue Integration

§ 1. Closed and Open Sets of Points

§ 2. Integrals of Continuous Functions on Open Sets

§ 3. Integrals of Continuous Functions on Bounded Closed Sets

§ 4. Summable Functions

§ 5. The Indefinite Integral of a Function of One Variable. Examples

§ 6. Measurable Sets. Egorov's Theorem

§ 7. Convergence in the Mean of Summable Functions

§ 8. The Lebesgue-Fubini Theorem

Lecture 7. Integrals Dependent on a Parameter

§ 1. Integrals which are Uniformly Convergent for a Given Value of Parameter

§ 2. The Derivative of an Improper Integral with respect to a Parameter

Lecture 8. The Equation of Heat Conduction

§ 1. Principal Solution

§ 2. The Solution of Cauchy's Problem

Lecture 9. Laplace's Equation and Poisson's Equation

§ 1. The Theorem of the Maximum

§ 2. The Principal Solution. Green's Formula

§ 3. The Potential due to a Volume, to a Single Layer, and to a Double Layer

Lecture 10. Some General Consequences of Green's Formula

§ 1. The Mean-Value Theorem for a Harmonic Function

§ 2. Behaviour of a Harmonic Function near a Singular Point

§ 3. Behaviour of a Harmonic Function at Infinity. Inverse Points

Lecture 11. Poisson's Equation in an Unbounded Medium. Newtonian Potential

Lecture 12. The Solution of the Dirichlet Problem for a Sphere

Lecture 13. The Dirichlet Problem and the Neumann Problem for a Half-Space

Lecture 14. The Wave Equation and the Retarded Potential

§ 1. The Characteristics of the Wave Equation

§ 2. Kirchhoif's Method of Solution of Cauchy's Problem

Lecture 15. Properties of the Potentials Of Single and Double Layers

§ 1. General Remarks

§ 2. Properties of the Potential of a Double Layer

§ 3. Properties of the Potential of a Single Layer

§ 4. Regular Normal Derivative

§ 5. Normal Derivative of the Potential of a Double Layer

§ 6. Behavior of the Potentials at Infinity

Lecture 16. Reduction of the Dirichlet Problem and the Neumann Problem to Integral Equations

§ 1. Formulation of the Problems and the Uniqueness of their Solutions

§ 2. The Integral Equations for the Formulated Problems

Lecture 17. Laplace's Equation and Poisson's Equation in a Plane

§ 1. The Principal Solution

§ 2. The Basic Problems

§ 3. The Logarithmic Potential

Lecture 18. The Theory of Integral Equations

§ 1. General Remarks

§ 2. The Method of Successive Approximations

§ 3. Volterra Equations

§ 4. Equations with Degenerate Kernel

§ 5. A Kernel of Special Type. Fredhohn's Theorems

§ 6. Generalization of the Results

§ 7. Equations with Unbounded Kernels of a Special Form

Lecture 19. Application of the Theory of Fredholm Equations to the Solution of the Dirichlet and Neumann Problems

§ 1. Derivation of the Properties of Integral Equations

§ 2. Investigation of the Equations

Lecture 20. Green's Function

§ 1. The Difíerential Operator with One Independent Variable

§ 2. Adjoint Operators and Adjoint Families

§ 3. The Fundamental Lemma on the Integrals of Adjoint Equations

§ 4. The Influence Function

§ 5. Definition and Construction of Green's Function

§ 6. The Generalized Green's Function for a Linear Second-Order Equation

§ 7. Examples

Lecture 21. Green's Function for the Laplace Operator

§ 1. Green's Function for the Dirichlet Problem

§ 2. The Concept of Green's Function for the Neumann Problem

Lecture 22. Correctness of Formulation of the Boundary-Value Problems of Mathematical Physics

§ 1. The Equation of Heat Conduction

§ 2. The Concept of the Generalized Solution

§ 3. The Wave Equation

§ 4. The Generalized Solution of the Wave Equation

§ 5. A Property of Generalized Solutions of Homogeneous Equations

§ 6. Bunyakovski's Inequality and Minkovski's Inequality

§ 7. The Riesz-Fischer Theorem

Lecture 23. Fourier's Method

§ 1. Separation of the Variables

§ 2. The Analogy between the Problems of Vibrations of a Continuous Medium and Vibrations of Mechanical Systems with a Finite Number of Degrees of Freedom

§ 3. The Inhomogeneous Equation

§ 4. Longitudinal Vibrations of a Bar

Lecture 24. Integral Equations With Real, Symmetric Kernels

§ 1. Elementary Properties. Completely Continuous Operators

§ 2. Proof of the Existence of an Eigenvalue

Lecture 25. The Bilinear Formula and the Hilbert-Schmidt Theorem

§ 1. The Bilinear Formula

§ 2. The Hilbert-Schmidt Theorem

§ 3. Proof of the Fourier Method for the Solution of the Boundary-Value Problems of Mathematical Physics

§ 4. An Application of the Theory of Integral Equations with Symmetric Kernel

Lecture 26. The Inhomogeneous Integral Equation with a Symmetric Kernel

§ 1. Expansion of the Resolvent

§ 2. Representation of the Solution by means of Analytical Functions

Lecture 27. Vibrations of a Rectangular Parallelepiped

Lecture 28. Laplace's Equation In Curvilinear Coordinates. Examples of the Use of Fourier's Method

§ 1. Laplace's Equation in Curvilinear Coordinates

§ 2. Bessel Functions

§ 3. Complete Separation of the Variables in the Equation V2u=0 in Polar Coordinates

Lecture 29. Harmonic Polynomials and Spherical Functions

§ 1. Definition of Spherical Functions

§ 2. Approximation by means of Spherical Harmonics

§ 3. The Dirichlet Problem for a Sphere

§ 4. The Differential Equations for Spherical Functions

Lecture 30. Some Elementary Properties of Spherical Functions

§ 1. Legendre Polynomials

§ 2. The Generating Function

§ 3. Laplace's Formula

Index

Other Volumes in this Series

Details

No. of pages:
440
Language:
English
Copyright:
© Pergamon 1964
Published:
Imprint:
Pergamon
eBook ISBN:
9781483181363

About the Author

S. L. Sobolev

About the Editor

I. N. Sneddon

S. Ulam

M. Stark