Proceedings of the American Mathematical Society

Published by the American Mathematical Society since 1950, Proceedings of the American Mathematical Society is devoted to shorter research articles in all areas of pure and applied mathematics.

ISSN 1088-6826 (online) ISSN 0002-9939 (print)

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Contents of Volume 129, Number 4
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Trace methods in twisted group algebras: D. S. Passman; Proc. Amer. Math. Soc. 129 (2001), 943-946; DOI: https://doi.org/10.1090/S0002-9939-00-05613-6; Published electronically: October 16, 2000; PDF

Every $\Sigma$-CS-module has an indecomposable decomposition: José L. Gómez Pardo and Pedro A. Guil Asensio; Proc. Amer. Math. Soc. 129 (2001), 947-954; DOI: https://doi.org/10.1090/S0002-9939-00-05654-9; Published electronically: October 10, 2000; PDF

Polynomial bounds for rings of invariants: Harm Derksen; Proc. Amer. Math. Soc. 129 (2001), 955-963; DOI: https://doi.org/10.1090/S0002-9939-00-05698-7; Published electronically: October 20, 2000; PDF

Descent algebras, hyperplane arrangements, and shuffling cards: Jason Fulman; Proc. Amer. Math. Soc. 129 (2001), 965-973; DOI: https://doi.org/10.1090/S0002-9939-00-05055-3; Published electronically: October 19, 2000; PDF

Global existence and blowup of solutions for a parabolic equation with a gradient term: Shaohua Chen; Proc. Amer. Math. Soc. 129 (2001), 975-981; DOI: https://doi.org/10.1090/S0002-9939-00-05666-5; Published electronically: December 12, 2000; PDF

An order characterization of commutativity for $C^{\ast }$-algebras: Wei Wu; Proc. Amer. Math. Soc. 129 (2001), 983-987; DOI: https://doi.org/10.1090/S0002-9939-00-05724-5; Published electronically: October 10, 2000; PDF

A functional equation arising from ranked additive and separable utility: János Aczél, Gyula Maksa, Che Tat Ng and Zsolt Páles; Proc. Amer. Math. Soc. 129 (2001), 989-998; DOI: https://doi.org/10.1090/S0002-9939-00-05686-0; Published electronically: October 4, 2000; PDF

FS-property for $C^*$-algebras: Kazunori Kodaka and Hiroyuki Osaka; Proc. Amer. Math. Soc. 129 (2001), 999-1003; DOI: https://doi.org/10.1090/S0002-9939-00-05712-9; Published electronically: October 10, 2000; PDF

Subsemivarieties of $Q$-algebras: M. H. Faroughi; Proc. Amer. Math. Soc. 129 (2001), 1005-1014; DOI: https://doi.org/10.1090/S0002-9939-00-05641-0; Published electronically: October 16, 2000; PDF

Essentiality for Mönch type maps: Ravi P. Agarwal and Donal O’Regan; Proc. Amer. Math. Soc. 129 (2001), 1015-1020; DOI: https://doi.org/10.1090/S0002-9939-00-05793-2; Published electronically: October 11, 2000; PDF

Single elements of finite CSL algebras: W. E. Longstaff and Oreste Panaia; Proc. Amer. Math. Soc. 129 (2001), 1021-1029; DOI: https://doi.org/10.1090/S0002-9939-00-05714-2; Published electronically: October 11, 2000; PDF

The Dirichlet-Jordan test and multidimensional extensions: Michael Taylor; Proc. Amer. Math. Soc. 129 (2001), 1031-1035; DOI: https://doi.org/10.1090/S0002-9939-00-05658-6; Published electronically: October 10, 2000; PDF

Existence and uniqueness of steady-state solutions for an electrochemistry model: Weifu Fang and Kazufumi Ito; Proc. Amer. Math. Soc. 129 (2001), 1037-1040; DOI: https://doi.org/10.1090/S0002-9939-00-05769-5; Published electronically: October 11, 2000; PDF

Morita equivalence and Pedersen ideals: Pere Ara; Proc. Amer. Math. Soc. 129 (2001), 1041-1049; DOI: https://doi.org/10.1090/S0002-9939-00-05688-4; Published electronically: October 4, 2000; PDF

Non-linearity of the pluricomplex Green function: Frank Wikström; Proc. Amer. Math. Soc. 129 (2001), 1051-1056; DOI: https://doi.org/10.1090/S0002-9939-00-05683-5; Published electronically: October 10, 2000; PDF

Elements in a commutative Banach algebra determining the norm topology: A. R. Villena; Proc. Amer. Math. Soc. 129 (2001), 1057-1064; DOI: https://doi.org/10.1090/S0002-9939-00-05659-8; Published electronically: November 8, 2000; PDF

A class of unitarily invariant norms on $B(H)$: Jor-Ting Chan, Chi-Kwong Li and Charlies C. N. Tu; Proc. Amer. Math. Soc. 129 (2001), 1065-1076; DOI: https://doi.org/10.1090/S0002-9939-00-05692-6; Published electronically: October 10, 2000; PDF

$C^{\ast }$-algebras associated with branched coverings: Valentin Deaconu and Paul S. Muhly; Proc. Amer. Math. Soc. 129 (2001), 1077-1086; DOI: https://doi.org/10.1090/S0002-9939-00-05697-5; Published electronically: October 4, 2000; PDF

Validity of nonlinear geometric optics with times growing logarithmically: David Lannes and Jeffrey Rauch; Proc. Amer. Math. Soc. 129 (2001), 1087-1096; DOI: https://doi.org/10.1090/S0002-9939-00-05845-7; Published electronically: October 4, 2000; PDF

A Helson-Lowdenslager-deBranges Theorem in $L^2$: Vern I. Paulsen and Dinesh Singh; Proc. Amer. Math. Soc. 129 (2001), 1097-1103; DOI: https://doi.org/10.1090/S0002-9939-00-05716-6; Published electronically: October 31, 2000; PDF

Global lower bound for the heat kernel of $-\Delta +\frac {c}{|x|^2}$: Qi S. Zhang; Proc. Amer. Math. Soc. 129 (2001), 1105-1112; DOI: https://doi.org/10.1090/S0002-9939-00-05757-9; Published electronically: October 11, 2000; PDF

Stability of wavelet frames and Riesz bases, with respect to dilations and translations: Jing Zhang; Proc. Amer. Math. Soc. 129 (2001), 1113-1121; DOI: https://doi.org/10.1090/S0002-9939-00-05660-4; Published electronically: December 7, 2000; PDF

Divergent Laguerre series: Krzysztof Stempak; Proc. Amer. Math. Soc. 129 (2001), 1123-1126; DOI: https://doi.org/10.1090/S0002-9939-00-05657-4; Published electronically: October 16, 2000; PDF

A criterion on weighted $L^{p}$ boundedness for rough multilinear oscillatory singular integrals: Yong Ding, Shanzhen Lu and Dachun Yang; Proc. Amer. Math. Soc. 129 (2001), 1127-1136; DOI: https://doi.org/10.1090/S0002-9939-00-05637-9; Published electronically: October 20, 2000; PDF

Complete orthogonal decomposition homomorphisms between matrix ordered Hilbert spaces: Yasuhide Miura and Kiminao Nishiyama; Proc. Amer. Math. Soc. 129 (2001), 1137-1141; DOI: https://doi.org/10.1090/S0002-9939-00-05745-2; Published electronically: October 19, 2000; PDF

Generalized frames and their redundancy: A. Askari-Hemmat, M. A. Dehghan and M. Radjabalipour; Proc. Amer. Math. Soc. 129 (2001), 1143-1147; DOI: https://doi.org/10.1090/S0002-9939-00-05689-6; Published electronically: October 20, 2000; PDF

Conformal metrics and Ricci tensors in the pseudo-Euclidean space: Romildo Pina and Keti Tenenblat; Proc. Amer. Math. Soc. 129 (2001), 1149-1160; DOI: https://doi.org/10.1090/S0002-9939-00-05817-2; Published electronically: October 4, 2000; PDF

Constructing the Kähler and the symplectic structures from certain spinors on 4-manifolds: Y. Byun, Y. Lee, J. Park and J. S. Ryu; Proc. Amer. Math. Soc. 129 (2001), 1161-1168; DOI: https://doi.org/10.1090/S0002-9939-00-05587-8; Published electronically: September 20, 2000; PDF

Torus actions on symplectic orbi-spaces: Tanya Schmah; Proc. Amer. Math. Soc. 129 (2001), 1169-1177; DOI: https://doi.org/10.1090/S0002-9939-00-05656-2; Published electronically: October 19, 2000; PDF

Martin’s Axiom does not imply perfectly normal non-archimedean spaces are metrizable: Yuan-Qing Qiao; Proc. Amer. Math. Soc. 129 (2001), 1179-1188; DOI: https://doi.org/10.1090/S0002-9939-00-04940-6; Published electronically: November 15, 2000; PDF

Adjoints and the image of the ball: Fred Richman; Proc. Amer. Math. Soc. 129 (2001), 1189-1193; DOI: https://doi.org/10.1090/S0002-9939-00-05618-5; Published electronically: September 20, 2000; PDF

A short proof of Ellentuck’s Theorem: Pierre Matet; Proc. Amer. Math. Soc. 129 (2001), 1195-1197; DOI: https://doi.org/10.1090/S0002-9939-00-05653-7; Published electronically: October 4, 2000; PDF

A bifurcation result for harmonic maps from an annulus to $S^2$ with not symmetric boundary data: C. Greco; Proc. Amer. Math. Soc. 129 (2001), 1199-1206; DOI: https://doi.org/10.1090/S0002-9939-00-05643-4; Published electronically: November 21, 2000; PDF

The Mitchell-Richter filtration of loops on Stiefel manifolds stably splits: Greg Arone; Proc. Amer. Math. Soc. 129 (2001), 1207-1211; DOI: https://doi.org/10.1090/S0002-9939-00-05794-4; Published electronically: October 4, 2000; PDF

Une preuve courte du principe de Selberg pour un groupe $p$-adique: J.-F. Dat; Proc. Amer. Math. Soc. 129 (2001), 1213-1217; DOI: https://doi.org/10.1090/S0002-9939-00-05834-2; Published electronically: October 4, 2000; PDF

A result about a selection problem of Michael: Francis Jordan and Sam B. Nadler Jr.; Proc. Amer. Math. Soc. 129 (2001), 1219-1228; DOI: https://doi.org/10.1090/S0002-9939-00-05598-2; Published electronically: September 25, 2000; PDF

On the simplicial volumes of fiber bundles: M. Hoster and D. Kotschick; Proc. Amer. Math. Soc. 129 (2001), 1229-1232; DOI: https://doi.org/10.1090/S0002-9939-00-05645-8; Published electronically: October 16, 2000; PDF

On the Grushin operator and hyperbolic symmetry: William Beckner; Proc. Amer. Math. Soc. 129 (2001), 1233-1246; DOI: https://doi.org/10.1090/S0002-9939-00-05630-6; Published electronically: October 10, 2000; PDF

On fiber-preserving isotopies of surface homeomorphisms: Terry Fuller; Proc. Amer. Math. Soc. 129 (2001), 1247-1254; DOI: https://doi.org/10.1090/S0002-9939-00-05642-2; Published electronically: October 11, 2000; PDF

Erratum to “Injective factorization of holomorphic mappings”: Manuel González and Joaquín M. Gutiérrez; Proc. Amer. Math. Soc. 129 (2001), 1255-1256; DOI: https://doi.org/10.1090/S0002-9939-00-06055-X; Published electronically: December 7, 2000; PDF