INDEX TO VOLUME 26 January-April 1992 RESEARCH-EXPOSITORY PAPERS Hirsch, Morris W. and Palais, Richard §. Editors’ remarks, | Lenstra, H. W., Jr. Algorithms in Algebraic Number Theory, 211 Morgan, John W. A-Trees and their applications, 87 Palais, Richard §. See Hirsch, Morris W. Parlett, Beresford N. Some basic information on information-based complexity theory, 3 Shelah, Saharon. Cardinal arithmetic for skeptics, 197 Struwe, Michael. Semilinear wave equations, 53 Traub, J. F. and Wozniakowski, H. Perspectives on information-based complexity, 29 Wozniakowski, H. See Traub, J. F. RESEARCH ANNOUNCEMENTS Albeverio, Sergio and Ma, Zhi-Ming. A general correspondence between Dirichlet forms and right processes, 245 Arapura, Donu. Higgs line bundles, Green-Lazarsfeld sets, and maps of Kahler manifolds to curves, 310 Boyer, C. P., Hurtubise, J. C., Mann, B. M., and Milgram, R. J. The Atiyah-Jones conjecture, 317 Brylinski, Ranee and Kostant, Bertram. Nilpotent orbits, normality, and Hamiltonian group actions, 269 Bunce, L. J. and Wright, J. D. Maitland. The Mackey-Gleason problem, 288 Burger, M., Li, J. S., and Sarnak, P. Ramanujan duals and automorphic spectrum, 253 Christ, Michael. Some non-analytic-hypoelliptic sums of squares of vector fields, 137 Deift, P. and Zhou, X. A steepest descent method for oscillatory Riemann-Hilbert problems, 119 Friedlander, Eric M. and Lawson, H. Blaine, Jr. A theory of algebraic cocycles, 264 Gelfand, I. M. and MacPherson, R. D. A combinatorial formula for the Pontrjagin classes, 304 Hauser, Herwig and Miiller, Gerd. Analytic varieties versus integral varieties of Lie algebras of vector fields, 276 Hurtubise, J.C. See Boyer, C. P. Kalai, Gil and Kleitman, Daniel J. A quasi-polynomial bound for the diameter of graphs of polyhe- dra, 315 Keen, Linda and Series, Caroline. Pleating coordinates for the Teichmiiller space of a punctured torus, 141 Kleitman, Daniel J. See Kalai, Gil Kostant, Bertram. See Brylinski, Ranee Lawson, H. Blaine, Jr. See Friedlander, Eric M. Levy-Bruhl, P., Mohamed, A., and Nourrigat, J. Spectral theory and representations of nilpotent groups, 299 Li, J.S. See Burger, M. Lilly, Glenn M. See Milne, Stephen C. Ma, Zhi-Ming. See Albeverio, Sergio MacPherson, R. D. See Gelfand, I. M. Mann, B. M. See Boyer, C. P. Mihalik, Michael L. and Tschantz, Steven T. Semistability ofa malgamated products, HNN-extensions, and all one-relator groups, 131 Milgram, R. J. See Boyer, C. P. Milne, Stephen C. and Lilly, Glenn M. The A, and C, Bailey transform and lemma, 258 Mohamed, A. See Levy-Bruhl, P. Miiller, Gerd. See Hauser, Herwig Nag, Subhashis. A period mapping in universal Teichmiiller space, 280 Nourrigat, J. See Levy-Bruhl, P. Ran, Ziv. Lifting of cohomology and unobstructedness of certain holomorphic maps, 113 Sarnak, P. See Burger, M. Seip, Kristian. Density theorems for sampling and interpolation in the Bargmann-Fock space, 322 Series, Caroline. See Keen, Linda Tschantz, Steven T. See Mihalik, Michael L. INDEX TO VOLUME 26 White, Brian. Nonunique tangent maps at isolated singularities of harmonic maps, 125 Wright, J. D. Maitland. See Bunce, L. J. Xie, Wenzheng. A sharp pointwise bound for functions with L?-Laplacians on arbitrary domains and its applications, 294 Zhou, X. See Deift, P. BOOK REVIEWS Atiyah, Michael. The geometry and physics of knots, reviewed by Raoul Bott, 182 Aubin, Jean-Pierre and Frankowska, Helene. Set-valued analysis, reviewed by Jonathan Borwein, 157 Bejancu, Aurel. Finsler geometry and applications, reviewed by Hanno Rund, 148 Biichi, J. Richard. Finite automata, their algebras and grammars: Towards a theory of formal expressions, reviewed by Howard Straubing, 340 Bucklew, James A. Large deviation techniques in decision, simulation, and estimation, reviewed by Richard S. Ellis, 160 Cherry, William. See Lang, Serge Cioranescu, Ioana. Geometry of Banach spaces, duality mappings and nonlinear problems, reviewed by Simeon Reich, 367 Efimov. See Golubov Evans, Lawrence C. Weak convergence methods for nonlinear partial differential equations, re- viewed by Michel Chipot and David Kinderlehrer, 147 Fomenko, AnatoliiT. Variational principles of topology. Multidimensional minimal surface theory, reviewed by Fred Almgren, 188 Frankowska, Helene. See Aubin, Jean-Pierre Fujita, Takao. Classsification theories of polarized varieties, reviewed by Andrew J. Sommese, 179 Golubov, Efimov, and Skvortsov. Walsh series and transforms, reviewed by W. R. Wade, 348 Karpilovsky, Gregory. Induced modules over group algebras, reviewed by Gerald Cliff, 193 Lakshmikantham, V., Matrosov, V. M., and Sivasundaram, S. Vector Lyapunov functions and stability analysis of nonlinear systems, reviewed by T. A. Burton, 344 Lang, Serge and Cherry, William. Topics in Nevanlinna theory, reviewed by Paul Vojta, 153 Matrosov, V.M. See Lakshmikantham, V. Mawhin, Jean and Willem, Michel. Critical point theory and Hamiltonian systems, reviewed by M. S. Berger, 329 Palais, Richard S. and Terng, Chuulian. Critical point theory and submanifold geometry, reviewed by M. S. Berger, 329 Rumely, Robert S. Capacity theory on algebraic curves, reviewed by Ted Chinburg, 332 Schmiidgen, Konrad. Unbounded operator algebras and representation theory, reviewed by Palle Jorgensen, 152 Sivasundaram, S. See Lakshmikantham, V. Skvortsov. See Golubov Stépan,G. Retarded dynamical systems: stability and characteristic functions, reviewed by Kenneth L. Cooke, 175 Strauss, Walter A. Nonlinear wave equations, reviewed by Cathleen S. Morawetz, 360 Strooker, Jan R. Homological questions in local algebra, reviewed by Craig Huneke, 361 Terng, Chuulian. See Palais, Richard M. Willem, Michel. See Mawhin, Jean Zenisek, A. Nonlinear elliptic and evolution problems and their finite element approximations, re- viewed by M. Dobrowolski, 336 Zwillinger, Daniel. Handbook of differential equaitons, reviewed by Ray Redheffer, 171