| I. The one-dimensional wave equation |
| 1. A physical problem and its mathematical models: the vibrating string |
| 2. The one-dimensional wave equation |
| 3. Discussion of the solution: characteristics |
| 4. Reflection and the free boundary problem |
| 5. The nonhomogeneous wave equation |
| II. Linear second-order partial differential equations in two variables |
| 6. Linearity and superposition |
| 7. Uniqueness for the vibrating string problem |
| 8. Classification of second-order equations with constant coefficients |
| 9. Classification of general second-order operators |
| III. Some properties of elliptic and parabolic equations |
| 10. Laplace's equation |
| 11. Green's theorem and uniqueness for the Laplace's equation |
| 12. The maximum principle |
| 13. The heat equation |
| IV. Separation of variables and Fourier series |
| 14. The method of separation of variables |
| 15. Orthogonality and least square approximation |
| 16. Completeness and the Parseval equation |
| 17. The Riemann-Lebesgue lemma |
| 18. Convergence of the trigonometric Fourier series |
| 19. "Uniform convergence, Schwarz's inequality, and completeness" |
| 20. Sine and cosine series |
| 21. Change of scale |
| 22. The heat equation |
| 23. Laplace's equation in a rectangle |
| 24. Laplace's equation in a circle |
| 25. An extension of the validity of these solutions |
| 26. The damped wave equation |
| V. Nonhomogeneous problems |
| 27. Initial value problems for ordinary differential equations |
| 28. Boundary value problems and Green's function for ordinary differential equations |
| 29. Nonhomogeneous problems and the finite Fourier transform |
| 30. Green's function |
| VI. Problems in higher dimensions and multiple Fourier series |
| 31. Multiple Fourier series |
| 32. Laplace's equation in a cube |
| 33. Laplace's equation in a cylinder |
| 34. The three-dimensional wave equation in a cube |
| 35. Poisson's equation in a cube |
| VII. Sturm-Liouville theory and general Fourier expansions |
| 36. Eigenfunction expansions for regular second-order ordinary differential equations |
| 37. Vibration of a variable string |
| 38. Some properties of eigenvalues and eigenfunctions |
| 39. Equations with singular endpoints |
| 40. Some properties of Bessel functions |
| 41. Vibration of a circular membrane |
| 42. Forced vibration of a circular membrane: natural frequencies and resonance |
| 43. The Legendre polynomials and associated Legendre functions |
| 44. Laplace's equation in the sphere |
| 45. Poisson's equation and Green's function for the sphere |
| VIII. Analytic functions of a complex variable |
| 46. Complex numbers |
| 47. Complex power series and harmonic func |
| 48. Analytic functions |
| 49. Contour integrals and Cauchy's theorem |
| 50. Composition of analytic functions |
| 51. Taylor series of composite functions |
| 52. Conformal mapping and Laplace's equation |
| 53. The bilinear transformation |
| 54. Laplace's equation on unbounded domains |
| 55. Some special conformal mappings |
| 56. The Cauchy integral representation and Liouville's theorem |
| IX. Evaluation of integrals by complex variable methods |
| 57. Singularities of analytic functions |
| 58. The calculus of residues |
| 59. Laurent series |
| 60. Infinite integrals |
| 61. Infinite series of residues |
| 62. Integrals along branch cuts |
| X. The Fourier transform |
| 63. The Fourier transform |
| 64. Jordan's lemma |
| 65. Schwarz's inequality and the triangle inequality for infinite integrals |
| 66. Fourier transforms of square integrable functions: the Parseval equation |
| 67. Fourier inversion theorems |
| 68. Sine and cosine transforms |
| 69. Some operational formulas |
| 70. The convolution product |
| 71. Multiple Fourier transforms: the heat equation in three dimensions |
| 72. The three-dimensional wave equation |
| 73. The Fourier transform with complex argument |
| XI. The Laplace transform |
| 74. The Laplace transform |
| 75. Initial value problems for ordinary differential equations |
| 76. Initial value problems for the one-dimensional heat equation |
| 77. A diffraction problem |
| 78. The Stokes rule and Duhamel's principle |
| XII. Approximation methods |
| 79. "Exact" and approximate solutions" |
| 80. The method of finite differences for initial-boundary value problems |
| 81. The finite difference method for Laplace's equation |
| 82. The method of successive approximations |
| 83. The Raleigh-Ritz method |
| SOLUTIONS TO THE EXERCISES |
| INDEX |