| Introduction | p. 1 |
| From local to global approximation | p. 5 |
| Comparisons of finite difference schemes | p. 9 |
| The Fourier spectral method: first glance | p. 16 |
| Trigonometric polynomial approximation | p. 19 |
| Trigonometric polynomial expansions | p. 19 |
| Discrete trigonometric polynomials | p. 24 |
| Approximation theory for smooth functions | p. 34 |
| Fourier spectral methods | p. 43 |
| Fourier-Galerkin methods | p. 43 |
| Fourier-collocation methods | p. 48 |
| Stability of the Fourier-Galerkin method | p. 52 |
| Stability of the Fourier-collocation method for hyperbolic problems I | p. 54 |
| Stability of the Fourier-collocation method for hyperbolic problems II | p. 58 |
| Stability for parabolic equations | p. 62 |
| Stability for nonlinear equations | p. 64 |
| Further reading | p. 65 |
| Orthogonal polynomials | p. 66 |
| The general Sturm-Liouville problem | p. 67 |
| Jacobi polynomials | p. 69 |
| Polynomial expansions | p. 79 |
| The continuous expansion | p. 79 |
| Gauss quadrature for ultraspherical polynomials | p. 83 |
| Discrete inner products and norms | p. 88 |
| The discrete expansion | p. 89 |
| Polynomial approximation theory for smooth functions | p. 109 |
| The continuous expansion | p. 109 |
| The discrete expansion | p. 114 |
| Polynomial spectral methods | p. 117 |
| Galerkin methods | p. 117 |
| Tau methods | p. 123 |
| Collocation methods | p. 129 |
| Penalty method boundary conditions | p. 133 |
| Stability of polynomial spectral methods | p. 135 |
| The Galerkin approach | p. 135 |
| The collocation approach | p. 142 |
| Stability of penalty methods | p. 145 |
| Stability theory for nonlinear equations | p. 150 |
| Further reading | p. 152 |
| Spectral methods for nonsmooth problems | p. 153 |
| The Gibbs phenomenon | p. 154 |
| Filters | p. 160 |
| The resolution of the Gibbs phenomenon | p. 174 |
| Linear equations with discontinuous solutions | p. 182 |
| Further reading | p. 186 |
| Discrete stability and time integration | p. 187 |
| Stability of linear operators | p. 188 |
| Standard time integration schemes | p. 192 |
| Strong stability preserving methods | p. 197 |
| Further reading | p. 202 |
| Computational aspects | p. 204 |
| Fast computation of interpolation and differentiation | p. 204 |
| Computation of Gaussian quadrature points and weights | p. 210 |
| Finite precision effects | p. 214 |
| On the use of mappings | p. 225 |
| Spectral methods on general grids | p. 235 |
| Representing solutions and operators on general grids | p. 236 |
| Penalty methods | p. 238 |
| Discontinuous Galerkin methods | p. 246 |
| References and further reading | p. 248 |
| Elements of convergence theory | p. 249 |
| A zoo of polynomials | p. 252 |
| Legendre polynomials | p. 252 |
| Chebyshev polynomials | p. 255 |
| Bibliography | p. 260 |
| Index | p. 272 |
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