Contents of Volume 23, Number 2

All articles in this issue are freely accessible.

Miscellaneous front pages, Bull. Amer. Math. Soc. (N.S.), Volume 23, Number 2 (1990)

Bull. Amer. Math. Soc. 23 (1990)
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MathSciNet review: 1567876

Miscellaneous back pages, Bull. Amer. Math. Soc. (N.S.), Volume 23, Number 2 (1990)

Bull. Amer. Math. Soc. 23 (1990)
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MathSciNet review: 1567898

Multiplication of distributions

J. F. Colombeau.
Bull. Amer. Math. Soc. 23 (1990), 251-268
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MathSciNet review: 1028141

Exponential sums over finite fields and differential equations over the complex numbers: Some interactions

Nicholas M. Katz.
Bull. Amer. Math. Soc. 23 (1990), 269-309
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MathSciNet review: 1032857

Elliptic methods in symplectic geometry

Dusa McDuff.
Bull. Amer. Math. Soc. 23 (1990), 311-358
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MathSciNet review: 1039425

Hurwitz groups: A brief survey

Marston Conder.
Bull. Amer. Math. Soc. 23 (1990), 359-370
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MathSciNet review: 1041434

Torsion points on elliptic curves

S. Kamienny.
Bull. Amer. Math. Soc. 23 (1990), 371-373
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MathSciNet review: 1058689

The behavior of the Mordell-Weil group of elliptic curves

Armand Brumer and Oisín McGuinness.
Bull. Amer. Math. Soc. 23 (1990), 375-382
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MathSciNet review: 1044170

A new upper bound for the minimum of an integral lattice of determinant 1

J. H. Conway and N. J. A. Sloane.
Bull. Amer. Math. Soc. 23 (1990), 383-387
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MathSciNet review: 1046123

$L$ functions for the group $G_2$

I. Piatetski-Shapiro, S. Rallis and G. Schiffmann.
Bull. Amer. Math. Soc. 23 (1990), 389-399
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MathSciNet review: 1031583

Subgroups of polynomial automorphisms

Edwin Connell and John Zweibel.
Bull. Amer. Math. Soc. 23 (1990), 401-406
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MathSciNet review: 1039423

Circle packings in the approximation of conformal mappings

Kenneth Stephenson.
Bull. Amer. Math. Soc. 23 (1990), 407-415
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MathSciNet review: 1049434

The topology of complete one-ended minimal surfaces and Heegaard surfaces in ${\text {R}}^3$

Charles Frohman and William H. Meeks III.
Bull. Amer. Math. Soc. 23 (1990), 417-421
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MathSciNet review: 1033085

A finiteness theorem for Ricci curvature in dimension three

Shun-Hui Zhu.
Bull. Amer. Math. Soc. 23 (1990), 423-426
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MathSciNet review: 1027905

Simply connected manifolds of positive scalar curvature

Stephan Stolz.
Bull. Amer. Math. Soc. 23 (1990), 427-432
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MathSciNet review: 1056561

Isospectral families of conformally equivalent Riemannian metrics

Robert Brooks and Carolyn Gordon.
Bull. Amer. Math. Soc. 23 (1990), 433-436
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MathSciNet review: 1033084

Complete noncompact Kähler manifolds with positive holomorphic bisectional curvature

Wan-Xiong Shi.
Bull. Amer. Math. Soc. 23 (1990), 437-440
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MathSciNet review: 1044171

Some new results on the topology of nonsingular real algebraic sets

Selman Akbulut and Henry King.
Bull. Amer. Math. Soc. 23 (1990), 441-446
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MathSciNet review: 1053986

Exotic cohomology and index theory

John Roe.
Bull. Amer. Math. Soc. 23 (1990), 447-453
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MathSciNet review: 1049433

The tensor product problem for reflexive algebras

Jon Kraus.
Bull. Amer. Math. Soc. 23 (1990), 455-460
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MathSciNet review: 1027903

Triangular algebras and ideals of nest algebras

John Lindsay Orr.
Bull. Amer. Math. Soc. 23 (1990), 461-467
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MathSciNet review: 1053988

Antimonotonicity: Concurrent creation and annihilation of periodic orbits

I. Kan and J. A. Yorke.
Bull. Amer. Math. Soc. 23 (1990), 469-476
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MathSciNet review: 1031582

A new formulation of the generalized Toda lattice equations and their fixed point analysis via the momentum map

Anthony M. Bloch, Roger W. Brockett and Tudor S. Ratiu.
Bull. Amer. Math. Soc. 23 (1990), 477-485
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MathSciNet review: 1027895

On the complete integrability of some Lax systems on ${\text {GL}}\left ( {n,R} \right ) \times {\text {GL}}\left ( {n,R} \right )$

Luen-Chau Li.
Bull. Amer. Math. Soc. 23 (1990), 487-493
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MathSciNet review: 1028140

A simplified version of the abstract Cauchy-Kowalewski theorem with weak singularities

Russel E. Caflisch.
Bull. Amer. Math. Soc. 23 (1990), 495-500
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MathSciNet review: 1027897

Zero-order perturbations of the subelliptic Laplacian on the Heisenberg group and their uniqueness properties

Nicola Garofalo and Ermanno Lanconelli.
Bull. Amer. Math. Soc. 23 (1990), 501-511
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MathSciNet review: 1039424

Subcriticality, positivity, and gaugeability of the Schrödinger operator

Z. Zhao.
Bull. Amer. Math. Soc. 23 (1990), 513-517
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MathSciNet review: 1043084

$L^p \to L^\{p’\}$ estimates for time-dependent Schrödinger operators

J. L. Journé, A. Soffer and C. D. Sogge.
Bull. Amer. Math. Soc. 23 (1990), 519-524
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MathSciNet review: 1035837

On the energy of a large atom

Charles L. Fefferman and Luis A. Seco.
Bull. Amer. Math. Soc. 23 (1990), 525-530
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MathSciNet review: 1056556

Shape optimization for Dirichlet problems: Relaxed solutions and optimality conditions

Giuseppe Buttazzo and Gianni Dal Maso.
Bull. Amer. Math. Soc. 23 (1990), 531-535
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MathSciNet review: 1027896

Discrete analogues of singular Radon transforms

E. M. Stein and S. Wainger.
Bull. Amer. Math. Soc. 23 (1990), 537-544
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MathSciNet review: 1056560

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Book Reviews

Book reviews do not contain an abstract. You may download each review in this issue using the links below.

The linearization method in hydrodynamical stability theory, by V. I. Yudovich.

Reviewer: D. H. Sattinger
Bull. Amer. Math. Soc. 23 (1990), 545-547
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$J$ Contractive matrix functions, reproducing kernel Hilbert spaces and interpolation, by Harry Dym.

Reviewer: Joseph A. Ball
Bull. Amer. Math. Soc. 23 (1990), 547-551
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Operators and representation theory: Canonical models for algebras of operators arising in quantum mechanics, by P. E. T. Jorgensen.

Reviewer: Roe Goodman
Bull. Amer. Math. Soc. 23 (1990), 551-554
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Initial-boundary value problems and the Navier-Stokes equations, by Heinz-Otto Kreiss and Jens Lorenz.

Reviewer: Peter Constantin
Bull. Amer. Math. Soc. 23 (1990), 555-559
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Mathematical problems from combustion theory, by Jerrold Bebernes and David Eberly.

Reviewer: A. K. Kapila
Bull. Amer. Math. Soc. 23 (1990), 559-562
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The asymptotic solution of linear differential systems, applications of the Levinson theorem, by M. S. P. Eastham.

Reviewer: Allen Devinatz
Bull. Amer. Math. Soc. 23 (1990), 563-566
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Conformal geometry, by Ravi S. Kulkarni and Ulrich Pinkall.

Reviewer: William M. Goldman
Bull. Amer. Math. Soc. 23 (1990), 566-575
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Real analysis and probability, by R. M. Dudley.

Reviewer: Mark A. Pinsky
Bull. Amer. Math. Soc. 23 (1990), 575-579
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Noncommutative Noetherian rings, by J. C. McConnell and J. C. Robson.

Reviewer: Edward Formanek
Bull. Amer. Math. Soc. 23 (1990), 579-582
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Foliations on Riemannian manifolds, by Philippe Tondeur.

Riemannian foliations, by Pierre Molino.

Reviewer: L. Conlon
Bull. Amer. Math. Soc. 23 (1990), 583-588
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Elementary geometry in hyperbolic space, by Werner Fenchel.

Reviewer: J. B. Wilker
Bull. Amer. Math. Soc. 23 (1990), 589-594
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The classical groups and $K$-theory, by A. J. Hahn and O. T. O'Meara.

Reviewer: Robert Steinberg
Bull. Amer. Math. Soc. 23 (1990), 594-598
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Harmonic analysis of spherical functions on real reductive groups, by R. Gangolli and V. S. Varadarajan.

Reviewer: D. Barbasch
Bull. Amer. Math. Soc. 23 (1990), 598-604
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Binary quadratic forms, classical theory and applications, by D. A. Buell.

Reviewer: D. H. Lehmer
Bull. Amer. Math. Soc. 23 (1990), 604-605
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The emperor's new mind, by Roger Penrose.

Reviewer: John McCarthy
Bull. Amer. Math. Soc. 23 (1990), 606-616
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Cosmology in $\left( {2 + 1} \right)$-dimensions, cyclic models, and deformations of $M_{2,1}$, by Victor Guillemin.

Reviewer: John K. Beem
Bull. Amer. Math. Soc. 23 (1990), 616-617
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The averaged moduli of smoothness with applications in numerical methods and approximation, by Blagovest Sendov and Vasil A. Popov.

Reviewer: R. J. Nessel
Bull. Amer. Math. Soc. 23 (1990), 618-620
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Matrix norms and their applications, by G. R. Belitskii and Yu. I. Lyubich.

Reviewer: Peter A. Fillmore
Bull. Amer. Math. Soc. 23 (1990), 620-623
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Vibration and coupling of continuous systems: asymptotic methods, by Jacqueline Sanchez Hubert and Enrique Sanchez Palencia.

Reviewer: M. Slemrod
Bull. Amer. Math. Soc. 23 (1990), 623-626
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An introduction to the numerical analysis of spectral methods, by Bertrand Mercier.

Reviewer: Levi Lustman
Bull. Amer. Math. Soc. 23 (1990), 626-629
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The theory of fixed point classes, by Kiang Tsai-Han.

Reviewer: D. R. Smart
Bull. Amer. Math. Soc. 23 (1990), 630-633
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