PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY CONTENTS Vol. 119, No. 1 Whole No. 411 September 1993 A. ALGEBRA, NUMBER THEORY, AND COMBINATORICS Injective morphisms of affine varieties. By MING-CHANG KANG On infinite disjoint covering systems. By AviEzRI S. FRAENKEL and R. JAMIE SIMPSON . Vanishing theorems for singular varieties. By KyUNGHO OH A numerical characterization of hypersurface singularities. By JUAN ELIAS Local isogeny theorem for Drinfeld modules with nonintegral invariants. By SUNGHAN BAE and PyUNG-LYUN KANG The length of elements in free solvable groups. By CARL Droms, JAcQuEs LEwIN, and HERMAN SERVATIUS Special values of the Lerch zeta function and the evaluation of certain integrals. By KENNETH S. WILLIAMS and ZHANG NAN-YUE The special values at negative integers of Dirichlet series associated with polynomials of several variables. By MINKI"IG EIE “Complete-simple” distributive lattices. By G. GRATZER and E. T. SCHMIDT Some studies on I]-coherent rings. By MinGy! WANG On groups related to the Hecke groups. By MARVIN I. KNopp and Morris NEWMAN . Linear transformations preserving potent matrices. By MATEJ BRESAR and PETER SEMRL Symmetric nilpotent matrices with maximal rank and a conjecture of Grothendieck-Koblitz. By CHING-LI CHAI; Appendix by MICHAEL LARSEN B. ANALYSIS Finite moments perturbations of y” = 0 in Banach algebras. By RENATO SPIGLER and MARCO VIANELLO The Hausdorff dimension of the nondifferentiability set of the Cantor function is {In(2)/in(3)}?._ By RicHARD Darst Univalent harmonic mappings on A= {z:|z| >1}. By Sook HEu! Jun On sets nonmeasurable with respect to invariant measures. By StAWOMIR SOLECKI .... Integrability of reciprocals of the Green’s function for elliptic operators: counterexamples. By M. CRIisTINA CERUTTI Automatic continuity of homomorphisms in topological algebras. Subspaces and graphs. By KIN YAN CHUNG Weakly continuous functions on Banach spaces not containing /;. By Joaquin M. GUTIERREZ The Hankel transformation of Banach-space-valued generalized functions. By E. L. Kou and C. K. Li Locally finite-dimensional sets of operators. By LEONYA LIVSHITS Invariant subspaces cf Toeplitz operators with piecewise continuous symbols. By VLADIMIR V. PELLER Existence of a nontrivial solution to a strongly indefinite semilinear equation. B. BUFFONI, L. JEANJEAN, and C. A. STUART On subadditive functions. |B y JANUsz MATKOwsKI and TADEUSZ SWIATKOWSKI Some estimates for harmonic measures. III. By JAMeEs A. JENKINS On some cubic modular identities. | By LI-CHIEN SHEN Almost isometric copies of /.. in some Banach spaces. By H. Hupzik and M. MAstTyto The stable neighborhood theorem and lengths of closed geodesics. By ARA BASMAJIAN. . Potential space estimates for Green potentials in convex domains. By STEPHEN J. FROMM Discreteness of some continuous spectrum eigenfunction expansions. By Don B. HINTON and ROBERT M. KAUFFMAN D. GEOMETRY Minimal surfaces and H-surfaces in nonpositively curved space forms. By BENNETT PALMER Some deformations of the Hopf foliation are also Kahler. Projectively flat surfaces in A>. By FaBio PopEsTA Complete minimal surfaces and the puncture number problem. By KICHOON YANG.... E. LOGIC AND FOUNDATIONS Adding dominating reals with the random algebra. By HAIM JUDAH and SAHARON SHELAH Certain games, category, and measure. By StAwOmIR SOLECKI G. TOPOLOGY On weakly chainable inverse limits with simplicial bonding maps. Closures of weakened analytic groups. By T. CHRISTINE STEVENS Finite loop spaces with maximal tori have finite Weyl groups. By LARRY SMITH .... A cyclic monotonically normal space which is not Kp. By MARY ELLEN RUDIN Lyapunov characteristic exponents are nonnegative. By FELIKs PRZYTYCKI An equivariant construction. By PEepRo L. Q. PERGHER Every attractor of a flow on a manifold has the shape of a finite polyhedron. By BERND I Fe ts oo iat Bae dads en esd tae eee esions On g-extensions of developable spaces. By T. MIZOKAMI SHORTER NOTES The Hayman-Wu constant. By KNUT OYMA Approximate continuity and linear approximate continuity. Vol. 119, No. 2 Whole No. 412 October 1993 A. ALGEBRA, NUMBER THEORY, AND COMBINATORICS The Sylow p-subgroups of semicomplete nilpotent groups. By MARTYN R. Drxon and E. MyRON RIGSBY Universal filtration of Schur complexes. By GIANDOMENICO BoFFi A generalization of the Aramata-Brauer theorem. By SANDRA L. RHOADES Estimates for character sums. By J. FRIEDLANDER and H. IWANIEC A double Stirling formula. By J. R. Quine and RiIcHARD R. SONG Ratios of regulators in extensions of number fields. By ANTONE CosTA and EDUARDO FRIEDMAN Every normal band with (REP) and (REP)°? is an amalgamation base. By KUNITAKA Rings with annihilator chain conditions and right distributive rings. By MIGUEL FERRERO and GUNTER TORNER On quantum spaces of Lie algebras. By LiEVEN LE BRUYN and MICHEL VAN DEN BERGH Reduction numbers and Rees algebras of powers of an ideal. By LE TUAN Hoa A note on medial division groupoids. By J. JezEK and T. KEPKA B. ANALYSIS Fourier decompositions with positive coefficients in compact Gelfand pairs. By BRIAN E. Asymptotic behavior of solutions of Poincaré difference equations. By WILLIAM F. TRENCH On the existence of periodic solutions for scalar second order differential equations when only the asymptotic behaviour of the potential is known. By ALESSANDRO FONDA Boundary behavior of holomorphic functions of Ms. By Hu ZHANGJIAN Block spaces on the unit sphere in R”. By MASAHIRO KEITOKU and ENy1 SATO A fixed point property of /;-product spaces. By TADEUSZ KuCZUMOw, SIMEON REICH, and MALGORZATA SCHMIDT Composition operators on analytic Lipschitz spaces. By KEviIn M. MADIGAN Differentiability of the norm in von Neumann algebras. By KEITH F. TAYLOR and WEND WERNER Asymptotics of the negative discrete spectrum of a class of Schrédinger operators with large coupling constant. By ARI LAPTEV A representation lattice isomorphism for the peripherical spectrum. By JosEP MARTINEZ Multiplicative perturbations of linear Volterra equations. By ABDELAZIZ RHANDI An example of Kac algebra actions on von Neumann algebras. By TAKEHIKO YAMANOUCHI The integration operator in two variables. By A. ATZMON and H. MANos Oscillation criteria for Hamiltonian matrix difference systems. By L. H. ErsBe and PENGXIANG YAN An asymptotic stability and a uniform asymptotic stability for functional differential equa- tions. By YOUNHEE Ko Multiplication operators and dynamical systems on weighted spaces of cross-sections. R. K. SINGH and J. S. MANHAS Stabilization of solutions of weakly singular quenching problems. By MAREK FILA, Howarp A. LEVINE, and JUAN L. VAZQUEZ Amenability and superharmonic functions. By S. NORTHSHIELD Growth conditions for thin sets in Vilenkin groups of bounded order. By D. J. Gruss . A general Hopf lemma and proper holomorphic mappings between convex domains in C”. By PETER R. MERCER On the abstract characterization of operator spaces. By EDWARD G. EFFros and ZHONG- JIN RUAN A note on boundary value problems for the heat equation in Lipschitz cylinders. By RussELL M. BROWN and ZHONGWEI SHEN Arens regularity and the Ap(G) algebras. By BRIAN FORREST Decomposition of Peano derivatives. By HAsRUDIN FEJziIC D. GEOMETRY On the Riemannian geometry of the nilpotent groups H(p,r). By PAOLA Piu and MICHEL A bridge between complex geometry and riemannian geometry. By ANTONIO CASSA F. STATISTICS AND PROBABILITY Moment conditions for almost sure convergence of weakly correlated random variables. By W. Bryc and W. SMOLENSKI G. TOPOLOGY Countable productivity of a class of pseudoradial spaces. By ANGELO BELLA Shadowing property of continuous maps with zero topological entropy. By MILAN KUCHTA Diagonalization in compact Lie algebras and a new proof of a theorem of Kostant. N. J. WILDBERGER Conjugation and excess in the Steenrod algebra. On the spectrum of the Neumann Laplacian of long range horns: a note on the Davies-Simon theorem. By V. JAkSi¢ The faithfulness question for the Burau representation. Vol. 119, No. 3 Whole No. 413 November 1993 A. ALGEBRA, NUMBER THEORY, AND COMBINATORICS Constructing bases for radicals and nilradicals of Lie algebras. By STEPHEN MERRIN ... Kmax and stable rank of enveloping algebras. By GEORGE TINTERA Nilpotent groups acting on abelian groups. By CHARLES CassiDy and Guy LABERGE... Operators with nilpotent p-curvature. By HANS SCHMITT Value sets of yulynomials over finite fields. _By DAQING WAN, PETER JAU-SHYONG SHIUE, and C. S. CHEN Characterizations of linear congruences on a free monoid. By ALESSANDRA CHERUBINI and MARIO PETRICH Quasi-heredity of algebras and their factor algebras. By CHANGCHANG XI A structure theorem for a pair of quadratic forms. By J. S. Hsia, M. JOCHNER, and B. ANALYSIS Univalent logharmonic ring mappings. By ZAYID ABDULHADI, WALTER HENGARTNER, and JAN SZYNAL Pages from the computer files of R. William Gosper. By Mourap E. H. IsMaiL, Yu TAKEUCHI, and RUIMING ZHANG Topological orbifolds. By CARLA Farsi A dichotomy theorem for the adjoint of a semigroup of operators. By J. M. A. M. VAN NEERVEN The unicellularity of contractions of class Cp. By Zou CHENGZU The evolution operator approach to functional differential equations with delay. By WOLFGANG M. RUEsS Taylor exactness and Kato’s jump. By Rosin HARTE Taylor theorem for planar curves. By ABEDALLAH RABABAH A characterization of harmonic Arakelyan sets. By M. GOLDSTEIN and W. H. Ow An extension of norm inequalities for integral operators on cones when 0 < p < 1. M. V. SIADAT and K. ZHou Averages along uniformly distributed directions on a curve. By JosE BARRIONUEVO.... Rado’s theorem for locally solvable vector fields. |B y JonGE HOUNIE and JOAQUIM TAVARES On the minimal invariant subspaces of the hyperbolic composition operator. By VALENTIN MATACHE A note on compact ideal perturbations in semifinite von Neumann algebras. By FLORIN On deterministic and random fixed points. By KoK-KEONG TAN and XIAN-ZHI YUAN .. On Poincaré type integral inequalities. By Winc-SuM CHEUNG Towers are universally measure zero and always of first category. By SZYMON PLEWIK .. A finite capacity analogue of the Koebe one-quarter theorem. By RoBIN CUNNINGHAM . On the solution of the Dirichlet problem for the two-dimensional Laplace equation. CHRISTIAN CONSTANDA Strong Boehmians. By ELLEN R. Dit and Piotr MIKUsINsKI A class of Riesz sets. By DaANteL Li : Double points on hyperbolic surfaces. By TROELS JORGENSEN and HANNA SANDLER ... Measurability properties of sets of Vitali’s type. By Stawomir SOLECKI The Cantor tree, the y-property, and Baire function spaces. Symmetric behavior in functions. By UDAYAN B. DarRsi D. GEOMETRY Singer groups, an approach from a group of multipliers of even order. By CHAT YIN Ho 925 Generalized Hadwiger numbers for symmetric ovals. By VALENTIN Bosu and Louis FUNAR E. LOGIC AND FOUNDATIONS On the minimality of tame models in the isols. By JosEPH BARBACK G. TOPOLOGY Duality for representations of a Hecke algebra. By SHIN-ICHI KATO Cardinal invariants in remainders and variations of tightness. By A. V. ARHANGEL’SKII and A. BELLA On mapping cones of suspension elements of finite order in the homotopy groups of a wedge of spheres. By IMRE BoKoR An example of /)-equivalent spaces which are not [>-equivalent. By JAN Baars, Joost DE GROOT, JAN VAN MILL, and JAN PELANT Entropy of random walks on groups and the Macaev norm. Primeness of twisted knots. By KIMIHIKO MOTEGI Zero entropy factors of topological flows. By F. BLANCHARD and Y. LACROIx On closed subspaces of w*. By A. Dow, R. FRANKIEWICZ, and P. ZBIERSKI Normality of o-products. By KEIKO CHIBA Involutions fixing products of circles. By R. E. STONG On diffeomorphisms over T2-knots. By SusUMU HIROSE SHORTER NOTES Some infinite series identities. By KEVIN B. ForpD Vol. 119, No. 4 Whole No. 414 December A. ALGEBRA, NUMBER THEORY, AND COMBINATORICS The 2-character table does not determine agroup. By KENNETH W. JOHNSON and SURINDER K. SEHGAL On the semigroups of fully invariant ideals of the free group algebra and the free associative algebra. By SAMUEL M. Vovsli On generators of L/R? Lie algebras. By VLADIMIR SHPILRAIN Endomorphism near-rings of p-groups generated by the automorphism and inner automor- phism groups. By Gary L. PETERSON On the exponents of ideal class groups of cyclotomic fields. By KUNIAK! HORIE A lower bound for sectional genera of ample and spanned vector bundles on algebraic sur- faces. By ANTONIO LANTERI and FRANCESCO Russo Mapping Galois extensions into division algebras. By NIKOLAUS VONESSEN Extendibility criterion for a projective module of rank one over R[T] and R[T, T~']. S. M. BHATWADEKAR and P. L. N. VARMA Derivations with invertible values on a multilinear polynomial. By TstU-KWEN LEE.... Linear operators that preserve column rank of Boolean matrices. By SEOK-ZUN SONG .. On a combinatorial problem associated with the odd order theorem. By GEORGE GLAUBERMAN and SIMON P. NoRTON On algebras with Gelfand-Kirillov dimension one. By SHIGERU KOBAYASHI and YUJI KOBAYASHI Quadratic and quasi-quadratic functionals. By PETER SEMRL For right-angled Coxeter groups z!8! is a coefficient of a uniformly bounded representation. By TADEUSZ JANUSZKIEWICZ B. ANALYSIS A remark on weighted inequalities for general maximal operators. By C. PEREZ Unitary Z4-actions with continuous spectrum. By VITALY BERGELSON, ISAAC KORNFELD, and Boris MITYAGIN A note on a transplantation theorem of Kanjin and multiple Laguerre expansions. S. THANGAVELU Continuous proper holomorphic maps into bounded domains. By AVNER Dor On isomorphisms between certain non-CSL algebras. By MANOs PAPADAKIS Additive derivations of nest algebras. By HAN DEGUANG Some inequalities for submarkovian generators and their applications to the perturbation theory. By V. A. LisKEvicH and Yu. A. SEMENOV Sobolev and quasiconformal extension domains. By MANOUCHEHR GHAMSARI On compact perturbations and compact resolvents of nonlinear m-accretive operators in Banach spaces. By ATHANASSIOS G. KARTSATOS On approximate antigradients. By X1AO-XIONG GAN and KARL R. STROMBERG Schatten class Hankel operators on the Bergman spaces of strongly pseudoconvex domains. By HulPinc Li Unbounded commuting operators and multivariate orthogonal polynomials. By YUAN Xu Some characterizations of semi-Bloch functions. By RAUNO AULASKARI and PETER LAPPAN Rough isometries and Dirichlet finite harmonic functions on graphs. By PAOLO M. SoaArRDI Weakly compact homomorphisms from group algebras. By B. E. JOHNSON Jacobson radicals of nest algebras in factors. By XINGDE Dal Regularity for operator algebras on a Hilbert space. By JOHN FROELICH D. GEOMETRY Complete minimal surfaces in R? of genus one and four planar embedded ends. By CELso E. LOGIC AND FOUNDATIONS On homogeneous nilpotent groups and rings. By GREGORY CHERLIN, DAN SARACINO, and CaROL Woop F. STATISTICS AND PROBABILITY Lower bound on the error probability for families with bounded likelihood ratios. By ANDREW L. RUKHIN G. TOPOLOGY Lifting Gottlieb sets and duality. By YEON Soo YOON Canonical system on elliptic curves. By Luis A. PlovAN Weak amenability of right-angled Coxeter groups. By ALAIN VALETTE Ortho-bases and monotonic properties. By HEIKKI J. K. JUNNILA and HANS-PETER A. KUNZI