Introduction |
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xi | |
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1 | (6) |
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1.1 Mathematical motivation: Series of functions |
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1 | (2) |
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1.2 Physical motivation: Acoustics |
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3 | (4) |
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Part 1 Complex functions of a real variable |
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7 | (106) |
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2 Real and complex numbers |
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9 | (22) |
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2.1 Axioms for the real numbers |
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9 | (4) |
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13 | (1) |
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2.3 Metrics and metric spaces |
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14 | (3) |
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2.4 Sequences in C and other metric spaces |
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17 | (6) |
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2.5 Completeness in metric spaces |
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23 | (2) |
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2.6 The topology of metric spaces |
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25 | (6) |
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3 Complex-valued calculus |
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31 | (42) |
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3.1 Continuity and limits |
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32 | (8) |
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40 | (5) |
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3.3 The Riemann integral: Definition |
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45 | (7) |
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3.4 The Riemann integral: Properties |
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52 | (6) |
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3.5 The Fundamental Theorem of Calculus |
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58 | (4) |
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3.6 Other results from calculus |
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62 | (11) |
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73 | (40) |
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74 | (6) |
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4.2 Sequences and series of functions |
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80 | (4) |
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84 | (11) |
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95 | (1) |
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4.5 Exponential and trigonometric functions |
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96 | (5) |
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4.6 More about exponential functions |
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101 | (3) |
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104 | (1) |
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105 | (8) |
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Part 2 Fourier series and Hilbert spaces |
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113 | (88) |
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5 The idea of a function space |
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115 | (10) |
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5.1 Which clock keeps better time? |
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115 | (2) |
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5.2 Function spaces and metrics |
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117 | (4) |
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121 | (4) |
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125 | (14) |
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125 | (2) |
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127 | (5) |
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132 | (4) |
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6.4 Convergence of Fourier series of differentiable functions |
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136 | (3) |
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139 | (38) |
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139 | (5) |
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144 | (6) |
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7.3 Orthogonal sets and bases |
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150 | (6) |
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7.4 The Lebesgue integral: Measure zero |
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156 | (6) |
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7.5 The Lebesgue integral: Axioms |
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162 | (9) |
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171 | (6) |
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8 Convergence of Fourier series |
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177 | (24) |
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8.1 Fourier series in L2(S1) |
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177 | (2) |
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179 | (1) |
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180 | (5) |
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8.4 Proof of the Inversion Theorem |
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185 | (4) |
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8.5 Applications of Fourier series |
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189 | (12) |
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Part 3 Operators and differential equations |
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201 | (60) |
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9 PDEs and diagonalization |
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203 | (10) |
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9.1 Some PDEs from classical physics |
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203 | (5) |
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9.2 Schrodinger's equation |
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208 | (2) |
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210 | (3) |
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10 Operators on Hilbert spaces |
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213 | (16) |
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10.1 Operators on Hilbert spaces |
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213 | (5) |
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10.2 Hermitian and positive operators |
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218 | (4) |
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10.3 Eigenvectors and eigenvalues |
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222 | (3) |
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225 | (4) |
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11 Eigenbases and differential equations |
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229 | (32) |
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11.1 The heat equation on the circle |
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230 | (5) |
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11.2 The eigenbasis method |
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235 | (2) |
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11.3 The wave equation on the circle |
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237 | (7) |
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11.4 Boundary value problems |
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244 | (6) |
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11.5 Legendre polynomials |
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250 | (4) |
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254 | (3) |
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11.7 The quantum harmonic oscillator |
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257 | (2) |
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11.8 Sturm-Liouville theory |
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259 | (2) |
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Part 4 The Fourier transform and beyond |
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261 | (58) |
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263 | (18) |
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263 | (3) |
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12.2 Convolutions, Dirac kernels, and calculus on R |
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266 | (5) |
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12.3 The Fourier transform on S(R) |
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271 | (2) |
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12.4 Inversion and the Plancherel theorem |
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273 | (3) |
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12.5 The L2 Fourier transform |
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276 | (5) |
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13 Applications of the Fourier transform |
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281 | (24) |
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13.1 A table of Fourier transforms |
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281 | (2) |
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13.2 Linear differential equations with constant coefficients |
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283 | (2) |
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13.3 The heat and wave equations on R |
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285 | (4) |
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13.4 An eigenbasis for the Fourier transform |
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289 | (2) |
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13.5 Continuous-valued quantum observables |
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291 | (5) |
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13.6 Poisson summation and theta functions |
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296 | (5) |
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13.7 Miscellaneous applications of the Fourier transform |
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301 | (4) |
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305 | (14) |
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14.1 What's next: More analysis |
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306 | (1) |
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14.2 What's next: Signal processing and distributions |
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306 | (2) |
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14.3 What's next: Wavelets |
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308 | (2) |
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14.4 What's next: Quantum mechanics |
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310 | (4) |
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14.5 What's next: Spectra and number theory |
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314 | (2) |
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14.6 What's next: Harmonic analysis on groups |
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316 | (3) |
Appendices |
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319 | (24) |
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A Rearrangements of series |
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319 | (4) |
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323 | (4) |
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327 | (4) |
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D Suggestions for problems |
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331 | (12) |
Bibliography |
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343 | (4) |
Index of Selected Notation |
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347 | (2) |
Index |
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349 | |