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Proceedings of the International Congress of Mathematicians: August 3–11, 1994 Zürich, Switzerland PDF

898 Pages·1995·24.42 MB·English
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Preview Proceedings of the International Congress of Mathematicians: August 3–11, 1994 Zürich, Switzerland

_ _ _ i Proceedings of the Intern-a-t-i-o-n-a--l ~--------- Congress of Mathema-t-ic~i-a-n--s- ---------- August 3-11,1994 Zurich, Switzerland BirkhCiuser Verlag Basel· Boston· Berlin Editor: S. D. Chatterji EPFL Departement de Mathematiques 1015 Lausanne Switzerland The logo for ICM 94 was designed by Georg Staehelin, Bachweg 6,8913 Ottenbach, Switzerland. A CIP catalogue record for this book is available from the Library of Congress, Washington D.C., USA Deutsche Bibliothek Cataloging-in-Publication Data International Congress of Mathematicians <1994, Ziirich>: Proceedings of the International Congress of Mathematicians 1994: August 3 - II, 1994, ZUrich, Switzerland / [Ed.: S. D. ChatterjiJ. -Basel; Boston; Berlin: Birkhiiuser. ISBN-13: 978-3-0348-9897-3 e-ISBN-13: 978-3-0348-9078-6 DOl: 10.1007/978-3-0348-9078-6 NE: S. D. Chatterji [Hrsg.J Vol. 2 (1995) This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, re-use of illustrations, broadcasting, reproduction on microfilms or in other ways, and storage in data banks. For any kind of use whatsoever, permission from the copyright owner must be obtained. © 1995 Birkhiiuser Verlag Softcover reprint of the hardcover I st edition 1995 P.O. Box 133 CH-4010 Basel Switzerland Printed on acid-free paper produced from chlorine-free pulp. TCF oc Layout, typesetting by mathScreen online, Allschwil 987654321 Table of Contents Volume I Preface Vll Past Congresses viii Past Fields Medalists and Rolf Nevanlinna Prize Winners ix Organization of the Congress. . . . . . . . . Xl The Organizing Committee of the Congress . Xlll List of Donors . . . . xv Opening Ceremonies XVll Closing Ceremonies XXXI Scientific Program XXXVll Invited One-Hour Addresses at the Plenary Sessions Invited Forty-Five Minute Addresses at the Section Meetings List of Participants (Ordinary Members) xlv Membership by Country . . . . . . . . . lxx The Work of the Fields Medalists and the Rolf Nevanlinna Prize Winner. 1 Invited One-Hour Plenary Addresses 29 Invited Forty-Five Minute Addrf)sses at the Section Meetings 267 Section 1. Logic. 269 Section 2. Algebra 298 Section 3. Number theory 363 Section 4. Geometry 443 Section 5. Topology. 548 Section 6. Algebraic geometry 648 Author Index . . . . . . . . . . . . 716 vi Table of Contents Volume II Table of Contents . v Scientific Program Vll Invited Forty-Five Minute Addresses at the Section Meetings (cont.) 719 Section 7. Lie groups and representations 721 Section 8. Real and complex analysis. . . 817 Section 9. Operator algebras and functional analysis 922 Section 10. Probability and statistics . . 980 Section 11. Partial differential equations 1055 Section 12. Ordinary differential equations and dynamical systems . . 1159 Section 13. Mathematical physics 1238 Section 14. Combinatorics . . . . 1333 Section 15. Mathematical aspects of computer science 1395 Section 16. Numerical analysis and scientific computing 1420 Section 17. Applications of mathematics in the sciences 1473 Section 18. Teaching and popularization of mathematics 1546 Section 19. History of mathematics 1568 Author Index . 1604 Scientific Program The Work of the Fields Medalists and the Rolf Nevanlinna Prize Winner Luis Caffarelli: The work of Jean Bourgain ....... . 3 s. R. S. Varadhan: The work of Pierre-Louis Lions ... . 6 Adrien Douady: Presentation de Jean-Christophe Yoecoz 11 Walter Feit: On the work of Efim Zelmanov ..... . 17 Yuri Matiyasevich: On some works of A vi Wigderson 25 Invited One-Hour Addresses at the Plenary Sessions Lasz16 Babai: Transparent proofs and limits to approximation ( Manuscript not submitted) * Jean Bourgain: Harmonic analysis and nonlinear partial differential equations ............................ . 31 John H. Conway: Sphere packings, lattices, codes, and greed 45 Ingrid Daubechies: Wavelets and other phase space localization methods 57 Jurg Frohlich: The fractional quantum Hall effect, Chern-Simons theory, and integral lattices . . . . . . . . . . . . . . . . . . . . 75 Joseph B. Keller: Wave propagation . . . . . . . . . . . . . . . . 106 Maxim Kontsevich: Homological algebra of mirror symmetry . . 120 Pierre-Louis Lions: On some recent methods for nonlinear partial differential equations . . . . . . . . . . . . . . . . . . . . . 140 Marina Ratner: Interactions between ergodic theory, Lie groups and number theory. . . . . . . . . . . . . . . . . . . . . . . . . . . 157 Paul Seymour: Progress on the four-colour theorem . . . . . . . . . 183 Clifford H. Taubes: Anti-self dual geometry (Manuscript not submitted) S. R. S. Varadhan: Entropy methods in hydrodynamic scaling ..... 196 Victor A. Vassiliev: Topology of discriminants and their complements 209 Dan Voiculescu: Free probability theory: Random matrices and von Neumann algebras ................ . 227 Andrew Wiles: Modular forms, elliptic curves and Fermat's Last Theorem . . . . . . . . . . . . . . . . . . . . . . 243 Jean-Christophe Yoccoz: Recent developments in dynamics 246 *) The material presented is largely covered by a recent survey under this title by L. Babai in: First European Congress of Mathematics, Paris 1992 (A. Joseph et aI., eds.), Vol. I, Progress in Math. 119, Birkhiiuser Verlag, Basel und Boston 1994, pp. 31-91. viii Scientific Program Invited Forty-Five Minute Addresses at the Section Meetings Section 1. Logic James E. Baumgartner: New trends in partition calculus (Manuscript not submitted) Alain Louveau: On the size of quotients by definable equivalence relations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269 Anand Pillay: Model theory, differential algebra, and number theory 277 Pavel Pudlak: Logic and complexity: Independence results and the complexity of propositional calculus . . . . . . . . . . . . . . 288 Section 2. Algebra Peter Littelmann: The path model for representations of symmetrizable Kac-Moodyalgebras ........................ 298 Alexander Lubotzky: Subgroup growth . . . . . . . . . . . . . . . . . 309 Jean-Fran<;ois Mestre: Constructions polynomiales et tMorie de Galois 318 Raman Parimala: Study of quadratic forms - Some connections with geometry . . . . . . . . . . . . . . . . . . . . . . . . . 324 Gerald W. Schwarz: Invariant differential operators 333 Andrei Suslin: Algebraic K-theory and motivic cohomology 342 Michel Van den Bergh: Modules of covariants. . . . . . . . 352 Section 3. Number theory Noam Elkies: Linearized algebra (Manuscript not submitted) John B. Friedlander: Bounds for L-functions ........ . 363 Alexander B. Goncharov: Polylogarithms in arithmetic and geometry . 374 Andrew Granville: Unexpected irregularities in the distribution of prime numbers ......................... 388 Bernadette Perrin-Riou: Fonctions L p-adiques . . . . . . . . . . . 400 Carl Pomerance: The role of smooth numbers in number theoretic algorithms . . . . . . . . . . . . . . . . . . . . . . . . . . 411 Michael Rapoport: Non-archimedean period domains. . . . . . 423 Richard Taylor: Representations of Galois groups associated to modular forms. . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 435 Section 4. Geometry Michael T. Anderson: Einstein metrics and metrics with bounds on Ricci curvature .. . . . . . . . . . . . . . . . . . . . 443 Victor Bangert: Minimal foliations and laminations 453 Kevin Corlette: Harmonic maps, rigidity and Hodge theory 465 Alexander B. Givental: Homological geometry and mirror symmetry 472 Nikolaos Kapouleas: Constant mean curvature surfaces in Euclidean spaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 481 Frances Kirwan: Intersection pairings on quotients and moduli spaces, and Witten's nonabelian localisation. . . . . . . . . . . . . . . . 491 Scientific Program ix Claude LeBrun: Anti-self-dual metrics and Kahler geometry . . 498 Jun Li: The geometry of moduli spaces of vector bundles over algebraic surfaces ..................... . 508 Tomasz S. Mrowka: Embedded surfaces and the structure of Donaldson's polynomial invariants (Manuscript not submitted) G. Perelman: Spaces with curvature bounded below ..... 517 Dietmar Salamon: Lagrangian intersections, 3-manifolds with boundary, and the Atiyah-Floer conjecture ...... . 526 Claude Viterbo: Generating functions, symplectic geometry and applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 537 Section 5. Topology Robert E. Gompf: Smooth 4-manifolds and symplectic topology. 548 Michael J. Hopkins: Topological modular forms, the Witten genus, and the theorem of the cube . . . . . . . . . . . . . . . . . . 554 Jean Lannes: Applications dont la source est un classifiant. . . . . 566 H. Blaine Lawson, Jr.: Spaces of algebraic cycles: Levels of holomorphic approximation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 574 John Luecke: Dehn surgery on knots in the 3-sphere . . . . . . . . . . . 585 E. Rips: Cyclic splittings of finitely presented groups and the canonical JSJ-decomposition ..................... 595 Joachim H. Rubinstein: An algorithm to recognize the 3-sphere . . . . . 601 Julius L. Shaneson: Characteristic classes, lattice points, and Euler-MacLaurin formulae . . . . . . . . . . . . . . . .. ..... 612 Stephan Stolz: Positive scalar curvature metrics - Existence and classification questions . . . . . . . . . . . . . . . . . . . 625 Shmuel Weinberger: Nonlocally linear manifolds and orbifolds . 637 Section 6. Algebraic geometry Gerd Faltings: Mumford-Stabilitat in der algebraischen Geometrie 648 David Harbater: Fundamental groups of curves in characteristic p . 656 Uwe Jannsen: Mixed motives, motivic cohomology, and Ext-groups 667 Yoichi Miyaoka: Rational curves on algebraic varieties . . . . . . . 680 Madhav V. Nori: Some Eisenstein cohomology classes for the integral unimodular group . . . . . . . . . . . . . . . . . . . . . . . . . . 690 Alexei N. Rudakov: Rigid and exceptional vector bundles and sheaves on a Fano variety . . . . . . . . . . . . . . . . . . . . . . . . . 697 Claire Voisin: Variations of Hodge structure and algebraic cycles 706 Section 7. Lie groups and representations Jeffrey Adams: Genuine representations of the metaplectic group and epsilon factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 721 Henning Haahr Anderson: The irreducible characters for semi-simple algebraic groups and for quantum groups .................... 732 x Scientific Program Richard E. Borcherds: Automorphic forms on Os+2,2(lR)+ and generalized Kac-Moodyalgebras 744 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Michel Brion: Spherical varieties 753 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Marc Burger: Rigidity properties of group actions on CAT(O)-spaces 761 0 0 Colin Jo Bushnell: Smooth representations of p-adic groups: The role of compact open subgroups 770 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 So Go Dani: Flows on homogeneous spaces and diophantine approximation 780 Jian-Shu Li: Singular automorphic forms 790 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Wolfgang Soergcl: Gradings on representation categories 800 0 0 0 0 0 0 0 Jean-Loup Waldspurger: Comparaison d'integrales orbit ales pour des groupes p-adiques 807 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Section 8. Real and complex analysis Jean-Pierre Demailly: L2-methods and effective results in algebraic geometry 817 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 David Drasin: Meromorphic functions: Progress and problems 828 0 Howard Masur: Teichmuller space, dynamics, probability 836 0 0 0 Ngaiming Mok: Fibering compact Kahler manifolds over projective algebraic varieties of general type 850 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Duong Ho Phong: Regularity of Fourier integral operators 862 0 0 0 0 0 Stephen Wo Semmes: Finding structure in sets with little smoothness 875 0 Mitsuhiro Shishikura: Topological, geometric, and complex analytic properties of Julia sets 886 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Christopher Do Sogge: Smoothing estimates for the wave equation and applications 896 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Pekka Tukia: A survey of Mobius groups 907 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Sidney Mo Webster: Geometric and dynamical aspects of real submanifolds of complex space 917 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Section 9. Operator algebras and functional analysis George Ao Elliott: The classification problem for amenable C*-algebras 922 Wo To Gowers: Recent results in the theory of infinite-dimensional Banach spaces 933 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Eberhard Kirchberg: Exact C*-algebras, tensor products, and the classification of purely infinite algebras 943 0 0 0 0 0 0 0 0 0 E. Odell (with Tho Schlumprecht): Distortion and stabilized structure in Banach spaces; New geometric phenomena for Banach and Hilbert spaces 955 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Antony Jo Wassermann: Operator algebras and conformal field theory 966 Mariusz Wodzicki: The algebra of functional analysis (Manuscript not submitted) Section 10. Probability and statistics Richard Fo Bass: Brownian motion, heat kernels, and harmonic functions 980 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Scientific Program xi Donald Dawson: Interaction and hierarchy in measure-valued processes. 986 David L. Donoho: Abstract statistical estimation and modern harmonic analysis ................................ 997 Hans Follmer: Probabilistic methods in finance (Manuscript not submitted) Jurgen Gartner: Parabolic systems in random media and aspects of intermittency ( Manuscript not submitted) Zhi-Ming Ma: Quasi-regular Dirichlet forms and applications . . 1006 Charles M. Newman: A surface view of first-passage percolation 1017 K. R. Parthasarathy: Quantum stochastic calculus . . . . . . . . 1024 Edwin A. Perkins: Measure-valued branching diffusions and interactions 1036 Hiroshi Tanaka: Diffusion processes in random environments ...... 1047 Section 11. Partial differential equations J. Thomas Beale: Analytical and numerical aspects of fluid interfaces. 1055 Kung-ching Chang: Morse theory in differential equations ..... . 1065 Jean-Yves Chemin: Analyse microlocale et mecanique des flu ides en dimension deux . . . . . . . . . . . . . . . . . . . . . . . . . 1077 Peter Constantin: Some mathematical problems of fluid mechanics . 1086 Constantine M. Dafermos: Hyperbolic systems of conservation laws . 1096 David Jerison: Eigenfunctions and harmonic functions in convex and concave domains. . . . . . . . . . . . . . . . . . . . . . . . . . 1108 Hiroshi Matano: Singularities of solutions of nonlinear parabolic and elliptic equations (Manuscript not submitted) Benoit Perthame: Kinetic equations and hyperbolic systems of conservation laws . . . . . . . . . . . . . . . . . . . 1118 Jalal Shatah: The Cauchy problem for harmonic maps on Minkowski space. . . . . . . . . . . . . . . . . . . . 1126 Panagiotis E. Souganidis: Interface dynamics in phase transitions 1133 Joel Spruck: Fully nonlinear elliptic equations and applications to geometry . . . . . . . . . . . . . . . . . . . . . . . . . . 1145 Vladimir Sverak: Lower-semicontinuity of variational integrals and compensated compactness .................. . 1153 Section 12. Ordinary differential equations and dynamical systems A. A. Bolibruch: The Riemann-Hilbert problem and Fuchsian differential equations on the Riemann sphere .................. 1159 Sergey V. Bolotin: Invariant sets of hamiltonian systems and variational methods . . . . . . . . . . . . . . . . . . . . . . . . . . 1169 John Franks: Rotation vectors for surface diffeomorphisms. . 1179 Manoussos G. Grillakis: A priori estimates and regularity of nonlinear waves . . . . . . . . . . . . . . . . . . . . . . . . . . .. 1187 Fran<;ois Ledrappier: Applications of dynamics to compact manifolds of negative curvature. . . . . . . . . . . . . . . . . . . . . . . . 1195 Mikhail Lyubich: On the borderline of real and complex dynamics . .. 1203

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Since the first ICM was held in Zürich in 1897, it has become the pinnacle of mathematical gatherings. It aims at giving an overview of the current state of different branches of mathematics and its applications as well as an insight into the treatment of special problems of exceptional importance.
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