| Preface | |
| Linear Partial Differential Equations | p. 1 |
| Linear problems | p. 1 |
| Classification | p. 5 |
| Well-posed problems | p. 9 |
| Method of general solutions | p. 12 |
| Method of separation of variables | p. 14 |
| The Wave Equation | p. 21 |
| The vibrating string | p. 21 |
| The initial value problem | p. 24 |
| The nonhomogeneous wave equation | p. 29 |
| Uniqueness of the initial value problem | p. 31 |
| Initial-boundary value problems | p. 33 |
| Initial-boundary value problems for semi-infinite string | p. 39 |
| Green's Function and Sturm-Liouville Problems | p. 45 |
| Solutions of second order linear equations | p. 45 |
| Boundary value problems and Green's function | p. 50 |
| Sturm-Liouville problems | p. 58 |
| Convergence in the mean | p. 62 |
| Integral operator with continuous, symmetric kernel | p. 66 |
| Completeness of eigenfunctions of Sturm-Liouville problems | p. 75 |
| Nonhomogeneous integral equation | p. 78 |
| Further properties of eigenvalues and eigenfunctions | p. 81 |
| Fourier Series and Fourier Transforms | p. 95 |
| Trigonometric Fourier series | p. 95 |
| Uniform convergence and completeness | p. 99 |
| Other types of Fourier series | p. 102 |
| Application to the wave equation | p. 105 |
| Fourier integrals | p. 109 |
| Fourier transforms | p. 113 |
| Contour integration | p. 117 |
| The Heat Equation | p. 127 |
| Derivation of the heat equation | p. 127 |
| Maximum principle | p. 130 |
| The initial-boundary value problem | p. 133 |
| Nonhomogeneous problems and finite Fourier transform | p. 135 |
| The initial value problem | p. 138 |
| The initial value problem for the nonhomogeneous equation | p. 142 |
| Nonhomogeneous boundary conditions for initial-boundary value problems | p. 145 |
| Laplace's Equation and Poisson's Equation | p. 151 |
| Boundary value problems | p. 151 |
| Green's identities and uniqueness theorems | p. 152 |
| Maximum principle | p. 154 |
| Laplace's equation in a rectangle | p. 155 |
| Laplace's equation in disc | p. 158 |
| Poisson's integral formula | p. 162 |
| Green's function for Laplace's equation | p. 166 |
| Poisson's equation in a disc | p. 173 |
| Finite Fourier transform for Poisson's equation | p. 177 |
| Dirichlet problem in the upper-half plane | p. 181 |
| Problems in Higher Dimensions | p. 191 |
| Classification | p. 191 |
| Double Fourier series | p. 194 |
| Laplace's equation in a cube | p. 200 |
| The two-dimensional wave equation in a rectangular domain | p. 202 |
| Bessel functions | p. 205 |
| Singular Sturm-Liouville problem for Bessel's equation | p. 209 |
| The two-dimensional wave equation in a circular domain | p. 212 |
| Initial-boundary value problems for the heat equation | p. 217 |
| Legendre's equation | p. 221 |
| Properties of Legendre polynomials | p. 224 |
| Legendre series and boundary value problems | p. 229 |
| Laplace's equation in a sphere | p. 232 |
| Poisson's integral formula in space | p. 235 |
| Ascoli's Theorem | p. 243 |
| App. B: Answers for Selected Problems | p. 245 |
| Bibliography | p. 255 |
| Index | p. 256 |
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