Foreword | p. vii |
Introduction | p. xv |
Fourier series: completion | p. xvi |
Limits of continuous functions | p. xvi |
Length of curves | p. xvii |
Differentiation and integration | p. xviii |
The problem of measure | p. xviii |
Measure Theory 1 1 Preliminaries | |
The exterior measure | p. 10 |
Measurable sets and the Lebesgue measure | p. 16 |
Measurable functions | p. 7 |
Definition and basic properties | p. 27 |
Approximation by simple functions or step functions | p. 30 |
Littlewood's three principles | p. 33 |
The Brunn-Minkowski inequality | p. 34 |
Exercises | p. 37 |
Problems | p. 46 |
Integration Theory...d> | p. 49 |
The Lebesgue integral: basic properties and convergence theorems | p. 49 |
Thespace L 1 of integrable functions | p. 68 |
Fubini's theorem | p. 75 |
Statement and proof of the theorem | p. 75 |
Applications of Fubini's theorem | p. 80 |
A Fourier inversion formula | p. 86 |
Exercises | p. 89 |
Problems | p. 95 |
Differentiation and Integration | p. 98 |
Differentiation of the integral | p. 99 |
The Hardy-Littlewood maximal function | p. 100 |
The Lebesgue differentiation theorem | p. 104 |
Good kernels and approximations to the identity | p. 108 |
Differentiability of functions | p. 114 |
Functions of bounded variation | p. 115 |
Absolutely continuous functions | p. 127 |
Differentiability of jump functions | p. 131 |
Rectifiable curves and the isoperimetric inequality | p. 134 |
Minkowski content of a curve | p. 136 |
Isoperimetric inequality | p. 143 |
Exercises | p. 145 |
Problems | p. 152 |
Hilbert Spaces: An Introduction | p. 156 |
The Hilbert space L 2 | p. 156 |
Hilbert spaces | p. 161 |
Orthogonality | p. 164 |
Unitary mappings | p. 168 |
Pre-Hilbert spaces | p. 169 |
Fourier series and Fatou's theorem | p. 170 |
Fatou's theorem | p. 173 |
Closed subspaces and orthogonal projections | p. 174 |
Linear transformations | p. 180 |
Linear functionals and the Riesz representation theorem | p. 181 |
Adjoints | p. 183 |
Examples | p. 185 |
Compact operators | p. 188 |
Exercises | p. 193 |
Problems | p. 202 |
Hilbert Spaces: Several Examples | p. 207 |
The Fourier transform on L 2 | p. 207 |
The Hardy space of the upper half-plane | p. 13 |
Constant coefficient partial differential equations | p. 221 |
Weaksolutions | p. 222 |
The main theorem and key estimate | p. 224 |
The Dirichlet principle | p. 9 |
Harmonic functions | p. 234 |
The boundary value problem and Dirichlet's principle | p. 43 |
Exercises | p. 253 |
Problems | p. 259 |
Abstract Measure and Integration Theory | p. 262 |
Abstract measure spaces | p. 263 |
Exterior measures and Carathegrave;odory's theorem | p. 264 |
Metric exterior measures | p. 266 |
The extension theorem | p. 270 |
Integration on a measure space | p. 273 |
Examples | p. 276 |
Product measures and a general Fubini theorem | p. 76 |
Integration formula for polar coordinates | p. 279 |
Borel measures on R and the Lebesgue-Stieltjes integral | p. 281 |
Absolute continuity of measures | p. 285 |
Signed measures | p. 285 |
Absolute continuity | p. 288 |
Ergodic theorems | p. 292 |
Mean ergodic theorem | p. 294 |
Maximal ergodic theorem | p. 296 |
Pointwise ergodic theorem | p. 300 |
Ergodic measure-preserving transformations | p. 302 |
Appendix: the spectral theorem | p. 306 |
Statement of the theorem | p. 306 |
Positive operators | p. 307 |
Proof of the theorem | p. 309 |
Spectrum | p. 311 |
Exercises | p. 312 |
Problems | p. 319 |
Hausdorff Measure and Fractals | p. 323 |
Hausdorff measure | p. 324 |
Hausdorff dimension | p. 329 |
Examples | p. 330 |
Self-similarity | p. 341 |
Space-filling curves | p. 349 |
Quartic intervals and dyadic squares | p. 351 |
Dyadic correspondence | p. 353 |
Construction of the Peano mapping | p. 355 |
Besicovitch sets and regularity | p. 360 |
The Radon transform | p. 363 |
Regularity of sets whend3 | p. 370 |
Besicovitch sets have dimension | p. 371 |
Construction of a Besicovitch set | p. 374 |
Exercises | p. 380 |
Problems | p. 385 |
Notes and References | p. 389 |
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