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VOLUME X
PROCEEDINGS OF
SYMPOSIA IN PURE MATHEMATICS
Singular Integrals
AMERICAN MATHEMATICAL SOCIETY
PROVIDENCE, RHODE ISLAND
1967
http://dx.doi.org/10.1090/pspum/010
Proceedings of the Symposium in Pure Mathematics
of the American Mathematical Society
Held at the University of Chicago
Chicago, Illinois
April 20-22, 1966
Prepared by the American Mathematical Society
under National Science Foundation Grant GP-5500
ALBERTO P. CALDER6N
Editor
Library of Congress Catalog Card Number 67-16553
Copyright (6) 1967 by the American Mathematical Society
Printed in the United States of America
All Rights Reserved Except Those Granted to the United States Government
May not be reproduced in any form without permission of the publishers
This volume of the Proceedings of the Symposia on Pure
Mathematics is dedicated to Professor Antoni Zygmund in
celebration of his sixty-fifth anniversary and in recognition of
his decisive contribution to the field of Singular Integrals.
4-
Antoni Zygmund
Contents
On Singular Integrals 1 B. BAJSANSKI
R. COIFMAN
Algebras of Singular Integral Operators 18 A. P. CALDERON
On the Existence of Singular Integrals 56 A. P. CALDERON
MARY WEISS
A. ZYGMUND
Remarks about -^-Theory of Singular Integral Operators 74 H. O. CORDES
Boundary Value Problems for Second-order Parabolic Equations 82 E. B. FABES
M. JODEIT, JR.
Symbolic Calculus of Kernels with Mixed Homogeneity 106 E. B. FABES
N. M. RIVIERE
On Symmetnzable Differential Operators 128 K. O. FRIEDRICHS
P. D. LAX
Pseudo-differential Operators and Hypoelliptic Equations 138 LARS HORMANDER
Symbols of Parabolic Singular Integrals 184 M. JODEIT, JR.
Singular Integrals and a Boundary Value Problem for the Heat Equation 196 B. FRANK JONES, JR.
A Class of Singular Integrals. Pseudo-differential Operators on Non-quasi-analytic Functions Spaces 208
PAUL KREE
CONTENTS
A Sharp Inequality for Pseudo-differential and Difference Operators 213 P. D. LAX
L. NlRENBERG
Mixed Estimates for Singular Integrals and an Application to Initi'al Value Problems in Parabolic Differential Equations 218
J. E. LEWIS
Singular Integral Operators on Manifolds 232 UMBERTO NERI
Boundary Value Problems for Parabolic Systems of Partial Differential Equations 243
JOHN C. POLKING
On Quasi-homogeneous Bessel Potential Operators 275 CORA SADOSKY
MlSCHA COTLAR
Complex Powers of an Elliptic Operator 288 R. T. SEELEY
Elliptic Singular Integral Equations 308 R. T. SEELEY
Singular Integrals, Harmonic Functions, and Differentiability Properties of Functions of Several Variables 316
E. M. STEIN
Hypersingular Integrals and Summability of Fourier Integrals and Series 336 RICHARD L. WHEEDEN
Author Index 371
Subject Index 373
Author Index Roman numbers refer to pages on which
of an author. Italic numbers refer to pages on which a
is given. Boldface numbers indicate the first page c
Agmon, S., 289, 290, 299, 306, 312, 313 Agronovich, M. S., 308, 312, 313 Arima, R., 101,102,103,105 Arnese, G., 196, 204, 207 Aronson, D. G., 231, 231 Aronszajn, N. , 275, 276,287 Atkinson, F . V., 310,314 Atiyah, M., 143,183, 288, 293, 306, 310,
312,313,313
Bajsanski, B., 1,55 Baouendi,S. ,210 Benedek, A., 57, 73, 201,207, 218, 224,
225,231,287,320,335 Besicovitch, A., 318, 335 Bokobza, J ., 138,139,169,183 Borak, T., 288,307 Borelli, R . ,81 ,81 Bott, R., 78,143,183, 288, 312, 313,313 Boyarskif, B. V., 312,314 Breuer, M., 77, 78,81 Browder, F. E., 288, 291,307 Calderon, A. P., 1 ,2,6,8,10,13,14,17,18,18,
19, 22, 25, 26, 27, 32, 37, 38, 44, 55, 56, 57, 63, 64, 72, 79,106,108,114,116,119,120, 126,127,136,138,139,183, 201, 204,207, 209,210,212,218, 223, 224, 225,231,232, 233, 241, 243, 244, 245, 246, 274, 275,279, 280, 281, 284, 285, 286,287, 289, 310, 311, 312, 313,314, 316, 317, 318, 320, 322, 326, 327, 335,335, 337, 356,369
Coifman, R., 1,55 Cordes, H. O., 74, 77, 78, 79 ,81, 310, 313, 314
Cotlar, M., 2,17, 209, 212, 275
Douglis, A., 312,313 Dunford,N. , 274 Dynin, A. S., 308, 312, 313,313,314
Erdelyi, A., 344,345,346,347,348,349,369 Eskin .G. I., 313,315
a reference is made to an author or a work
complete reference to a work by the author
>f the articles in the book.
Fabes, E. B., 82, 83, 37, 88,104,105, 106, 107, 115,116,117, 118, 119, 120, 121,125, 126,127, 184,195, 196, 204, 207, 209, 212, 218, 219, 224, 226, 227, 228, 231, 231
Federer, H.,294, 307 Feldman, J . , 77 Friedman, A., 105, 229, 231 Friedrichs, K. O., 128,128, 242
Gel'fand, I. M., 312, 314 Giraud,G. , 311,313,314 Gohberg, I., 81, 255, 274, 310, 314 Golovokin, K. K., 287 Grisvard, P., 209, 212
Hardy, G. H., 287 Herman, E., 79,81 Herz ,C .S . , 331, 332, 335 Hilbert, D., 308, 312,314 Hirschmann, 1.1., 320, 323, 335 Hoffman, K., 189,195 Hormander, L., 37, 55, 57, 81 ,81, 138,
138, 139, 162, 164,168, 171, 179, 180,183, 196, 201, 204, 207, 210, 210, 211, 212, 216, 217, 218, 224, 231, 232, 237, 241, 274, 274, 288, 289, 290, 292, 307, 313,314, 316, 320, 335
Horvath, J ., 311, 314, 325, 335
Jessen, B., 199,207 Jodeit, M., Jr. , 82,84,104,105, 184,195 John, R., 321, 335 Jones, B. F. , Jr. , 138,183, 1%, 196, 203, 204, 207, 218, 219, 224, 226
Jones, F., 209, 212
Kahane, J . P., 72 Kato, T., 310,314 Kohn, J . J ., 18,55, 79,81,130,138,158,
183, 216,217, 274, 289, 290, 294, 297, 307, 311,313,314
Koppleman, W., 312, 313, 314
372
Kotake, T., 288, 292,307, 313 Kree, P., 196, 204,207, 208, 208, 209, 210, 211,212, 277, 280,287
Krein, M. G., 255,274, 310,314 Kreiss,H.O., 274,2i 7 Kumano-go,H., 138,183
Labrousse, J . P., 310,314 Lax, P. D., 128,128, 242 Lewis, J . E., 196, 204,207, 218 Littlewood, J . E., 287 Luft, E., 77,81 Luke, Y. I., 358,369 Luxemburg, W. A. J ., 23, 24,55
Magnus, W., 344, 345,346, 347,348, 349, 369
Malgrange, B., 210,212 Marcinkiewicz, J ., 199,207 McKean, H. P., 294, 307 Mihlin, S. G., 37,138,183, 308, 311, 312, 314
Minakshisundaram, S., 288, 292, 294, 306, 307
Muskhelishvili, N. T., 308, 313,314
Narasimhan, M., 288,307 Newberger, S., 80,81 Nirenberg, L., 18,55, 79,81,130,138,158,
164,183, 213, 215, 216,217,274, 288, 289, 290, 294, 297, 307, 312, 313,313, 314, 321,335
Noether, F., 292,307, 310,312,314
Oberhettinger, F., 344, 345, 346, 347, 348, 349,369
O'Neil, R., 213, 215, 216,217, 230, 231,231 Ostrow,E. H.,335
Palais, R. S., 86,105,138,183, 243, 269, 274, 289, 290, 293, 294, 297,307, 312,314
Panejah, B. P., 275,287 Panzone, R., 57, 201,207, 218, 224, 225, 231,320,335
Peetre, J . , 287 Pleijel, A., 288, 292, 294, 306,307 Plemelj, J. ,308, 310,324 Poincare, H., 308,314 Polking, J . C , 243 P61ya,G., 287 Privalof,J.,310,311,314
Richtmyer, R. D., 214,217
AUTHOR INDEX
Riesz, M., 310, 312,315 Riviere, N. M., 87,88,104,105,106,106,
107,115,116,117,118,119,120,121,125, 126,127,184,195,196,204,207,209,212t
224,231
Sadosky, C , 209, 211,212, 275,280,284, 285,287
Schwartz, J . , 274, 320,335 Seeley, R. T., 55,81,85,86,105,138,139,
158,183, 212, 243, 244, 248, 269,274, 288, 288, 289, 230, 293, 302,307,308, 312,313, 315
Shamir, E., 313,315 Shapiro, V. L., 338, 340, 342, 348, 353, 358,
362,365, 366,369 Singer, I. M., 293, 294,306,307, 310, 312, 313,313,315
Smith, K. T., 275,276,287 Stein, E. M., 16, 163, 183, 198, 205, 207,
246,274, 275, 281, 283, 287, 316, 320, 321, 323, 325, 326, 327, 328, 329, 333,335
Taibleson, M. H., 196,198, 201, 204, 207, 275,287,320,331,335
Titchmarsh, E. C , 318,335 Treves, F., 168 Tricomi, F. G., 310, 311,315, 344, 345, 346, 347, 348, 349,369
Unterberger, A., 138,139,169,183
Visik, M. I., 313,315 Volevie, L. R., 275, 287 Volpert, A. I., 312, 313,315
Wainger, S., 138,163,183, 323,335 Watson, G. N., 338, 348, 350, 354, 357, 369 Weiss, G., 325,335 Weiss, M., 56,57, 72, 313,315 Wendroff,B., 215,217 Weyl, H., 294,307 Wheeden, R. L., 325,335, 336 Wiener, N., 291, 307
Zygmund, A., 2, 6, 8,10,13,14,17,18,19, 25, 26, 37, 44, 55, 56, 57, 63, 64, 72, 79, 106, 108, 114,116, 119, 120,126,127,138, 139,183, 199, 201, 204, 207, 209, 210, 212, 218, 223, 224, 231, 233, 284, 285, 286,287, 289, 311, 312, 313, 314, 31$, 316, 317,318, 319, 322,325,326,327,328,329,335, 335, 337,340,356,367,369
Subject Index adjoint, 149 algebra with or-symbols, 77, 79 amplification matrix, 214 area
function, Lusin, 204 integral, 205
Besov spaces, 280 Bessel potentials, quasi-homogeneous, 276 Bochner-Riesz means of order 7, 338 Bott's unitary group, 78 boundary
operator, 101,102 problems, 312
on compact manifolds, 308 oblique, 81
bounded mean oscillation, 321 boundedness, 9
of maximal operator, 1, 2 bundles, vector, 78
C alderdn -Zy gmund kernel, 337 operators, 79, 289
elliptic, 301 Cauchy principal value singular
integral, 309 Cauchy-Riemann equations, 325 class (/, r), operator of, 250 compact
ideal, 77 manifolds, boundary problems on, 308
compactly supported, 148 cone, 201 conjugate function, 59 continuity
in metric L', moduli of, 58 modulus of, 57
convolution singular integral operators, 19 critical index, 340 cube, fundamental, 61
derivative ordinary, 326 at x in harmonic sense, 328 at x0 in LQ sense, 326
difference operator, 213 scheme (s), 213
stability for, 213 Dini condition, 57, 58
elliptic, 232 Calderon-Zygmund operator, 301 differential operators, Garding's
inequality for, 213 operator, 288
index of, 312 partial differential equations, 308
ellipticity condition, 309
fixed points, 142 Fourier transform R (x), principal-valued, 337
Fredholm concept, generalized, 75 equation, 309, 311
function spaces, 22 fundamental cube, 61
^-function, 319 Garding's inequality for elliptic differential
operators, 213 general singular integral equation, 309 generalized Fredholm concept, 75 Grassmann-manifolds, 77
harmonic sense, derivative at x in, 328 Hilbert transform, 2, 309 homogeneous kernel, 56 hypersingular integral, 337 hypoelliptic, 163
374
Ikehara's theorem, 291 index, 167
of elliptic operator, 312 formula, 292
initial value problem, 213 interpolation theorem of Marcinkiewicz, 318
*th differential in Lp, 338 kernel
homogeneous, 56 theorem, Schwartz, 302 truncated, 56
U-topology, 75 Lebesgue
condition, logarithmic, 72 space, 198
Lipschitz spaces, 197,198 Littlewood - Paley
function, 198 g-function, 318
logarithmic Lebesgue condition, 72 Lusin area function, 204
Marcinkiewicz, interpolation theorem of, 318
maximal operator(s), 2, 4,12
boundedne8s of, 1, 2 i?-set(s),75,76
moduli of continuity in metric L', 58 modulus of continuity, 57
^-index, 76 yf*- opera tor, 75 Noether's formula, 293 nonorientable manifolds, 312
oblique boundary problem, 81 operator (s)
of class (J, r), 250 of order zero, 305
ordinary derivative, 326 total differential, 326
oscillation, bounded mean, 321
parabolic, 269 evolution operators, 254 singular integral (s), 184
operator(s),82,86,93 parametrix, 164, 298 partial differential equations, elliptic, 308 Peetre's inequality, 294
SUBJECT INDEX
Poisson integral, 319, 338 potential, 197
of order a of if function, 319 principal value, 56 principal-valued Fourier transform ft(x)t
337 pseudo inverse, 84 pseudo-differential operators, 79, 216,
232 , 288 pseudo-product, 84 pseudo-spectrum, 249
quasi - homogeneous Bessel potentials, 276 functions, 276
#-set, 75 Riesz
operators, 79 transforms(s), 2,13,323
rotation method, 2, 7 rotational, 58
cr-symbol, 77 Schwartz kernel theorem, 302 semielliptic, 233 singular
integral(s), 337 Cauchy principal value, 309 equations, 308
general, 309 operator(s),39,232
convolution, 19 depending on a parameter, 249 parabolic, 82, 86,93 properties of, 243 with variable kernel, 25
parabolic, 184 strongly, 322 truncated, 337
operators with only bounded behaviour atx = oo,80
support, 140 spaces Hk,n 253 space-like, 135 splitting property, 328 stability for difference schemes, 213 subelliptic, 237
properly, 241 symbol, S3,149,185, 214 symmetnzable, 129
Taylor expansion, 297 total differential, ordinary, 326
SUBJECT INDEX 375 transform (s; unitary group, Bott's, 78
Hilbert, 2 Riesz, 2,13, 323 v e c t o r bundles, 78
transversal 142 von-Neumann condition, 214 truncated weak type, 16,17, 57
kernel, 56 weak-type result, 317 singular integral, 337 well-posed, 75
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