INDEX 411 Double integral, 165 Dual space, 108, 112, 127, 130 Eberlein, W. F., 58 Edwards, R. E., 398 Egoroff's theorem, 73 Elementary factor, 301 Elementary set, 161 Ellipse, 287 Ellis, H. W., 399 Empty set, 6 End point, 200 Entire function, 198 Equicontinuous family, 245 Equivalence classes, 67 Equivalent paths, 201 Essential range, 74 Essential singularity, 211, 267 Essential supremum, 66 Euclidean space, 34, 49 Euclid's inequality, 77 Euler's identity, 2 Exponential function, 1, 198 Exponential type, 372, 382, 383 Extended real line, 7, 9 Extension, 105 Extensiop theorem, 105 Extremal function, 255 Extreme point, 251 Fa-set, 12 Factorization, 303, 338, 344 Family, 6 Fatou, P., 400 Fatou's lemma, 23, 68, 309, 344 Fatou's theorem, 249 Fejer kernel, 252 Fejer's theorem, 91 Field,394 Finite additivity, 17 First category, 98 Fixed point, 151,229,247,293,297,314,318,395 Ford, L. R., 401 Fourier coefficients, 82, 91 of measure, 133 Fourier series, 83,91 Fourier transform, 178 Fubini's theorem, 164, 168 Function, 7 absolutely continuous, 145 analytic, 197 Borel,13 bounded,66 of bounded variation, 148 complex, 8 continuous, 8 convex, 61 entire, 198 essentially bounded, 66 exponential, 1 of exponential type, 372, 383 harmonic, 232 holomorphic, 197 Lebesgue integrable, 24 left-continuous, 157 locally integrable, 194 lower semicontinuous, 37 measurable, 8, 29 meromorphic, 224 modular, 328 nowhere differentiable, 114 rational, 267 real,8 simple, 15 subharmonic, 335 summable, 24 upper semicontinuous, 37 Function element, 323 Functional: bounded,96 on Co, 130 complex-linear, 105 continuous, 96 on Hilbert space, 81 on n, 127 linear, 33 multiplicative, 191, 364 positive, 34 real-linear, 105 Functional analysis, 108 Fundamental domain, 329 Fundamental theorem of calculus, 144, 148 G,-set, 12 Gap series, 276, 321, 334, 354, 385 Gelf<strong>and</strong>, I., 402 Gelf<strong>and</strong>-Mazur theorem, 359 Gelf<strong>and</strong> transform, 370 Geometric mean, 63 Goursat, E., 400 Graph, 114, 174 Greatest lower bound, 7 Green's theorem, 389 Hadamard, J., 264, 321 Hahn-Banach theorem, 104, 107,270,313,359 Hahn decomposition, 126 Hall, D., 398
412 INDEX Halmos, P. R., 398,403 Hardy, G. H., 173, 335, 399 Hardy's inequality, 72, 177 Harmonic conjugate, 350 Harmonic function, 232 Harmonic majorant, 352 Harnack's theorem, 236, 250 Hausdorff, F., 12, 400 Hausdorffmaximality theorem, 87,107,195,362, 396 Hausdorff separation axiom, 36 Hausdorff space, 36 Hausdorff-Young theorem, 261 Heine-Borel theorem, 36 Helson, H., 348 Herglotz, G., 400 Hilbert cube, 92 Hilbert space, 77 isomorphism, 86 Hoffman, K., 402 HOlder's inequality, 63, 66 Holomorphic function, 197 Homomorphism, 179, 191,364,402 Homotopy, 222 Hunt, R. A., 398 Ideal, 175, 305, 362 Image, 7 Independent set, 82 Index: ofcurve,223,230 of cycle, 218 of path, 203 Infimum, 7 Infinite product, 298 Initial point, 200 Inner factor, 344 Inner function, 342 Inner product, 76, 89 Inner regular set, 47 Integral, 19, 24 Integration, 19 over cycle, 218 of derivative, 146, 148, 149 over measurable set, 20 by parts, 157 over path, 200 with respect to complex measure, 129 Interior, 267 Interpolation, 173, 260, 304 Intersection, 6 Interval,7 Invariant subspace, 188,346 Inverse image, 7 Inverse mapping, 7, 215 Inversion, 280 Inversion formula, 181 Inversion theorem, 185, 186 Invertible element, 357 Isolated singularity, 210, 266 Isometry, 84 Isomorphism, 86 Iterated integral, 165 Jacobian, 150,250 Jensen's formula, 307 Jensen's inequality, 62 Jordan, C., 5 Jordan curve, 291 Jordan decomposition, 119 Kahane, J. P., 401 Kaufman, R. P., 399,437 Kirk, R. 8., 398 Koebe function, 285, 401 Laplace equation, 232 Laplacian, 195 Laurent series, 230 Least upper bound, 7 Lebesgue, H. J., 5, 21, 397, 399 Lebesgue decomposition, 121 Lebesgue integrable function, 24 Lebesgue integral, 19 Lebesgue measurable set, 51 Lebesgue measure, 51 Lebesgue point, 138, 159,241 Left-continuous function, 157 Left-h<strong>and</strong> limit, 157 Length, 159,202 Limit, pointwise, 14 in mean, 67 of measurable functions, 14 in measure, 74 Lindelof's theorem, 259 Linear combination, 82 Linear fractional transformation, 279, 296 Linear independence, 82 Linear transformation, 33 Linearly ordered set, 87 Liouville's theorem, 212, 220, 359 Lipschitz condition, 113 Littlewood, J. E., 173, 399 Locally compact space, 36 Locally integrable function, 194 Logarithm, 227,274 Lowdenslager, D., 348 Lower half plane, 237
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