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)

The 2024 MCQ for Proceedings of the American Mathematical Society is 0.85.

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Contents of Volume 137, Number 11
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Almost universal ternary sums of triangular numbers: Wai Kiu Chan and Byeong-Kweon Oh; Proc. Amer. Math. Soc. 137 (2009), 3553-3562; DOI: https://doi.org/10.1090/S0002-9939-09-09990-0; Published electronically: June 25, 2009; PDF

Signs of Fourier coefficients of two cusp forms of different weights: Winfried Kohnen and Jyoti Sengupta; Proc. Amer. Math. Soc. 137 (2009), 3563-3567; DOI: https://doi.org/10.1090/S0002-9939-09-09982-1; Published electronically: June 18, 2009; PDF

Lower bounds for moments of automorphic $L$-functions over short intervals: Guanghua Ji; Proc. Amer. Math. Soc. 137 (2009), 3569-3574; DOI: https://doi.org/10.1090/S0002-9939-09-10012-6; Published electronically: June 15, 2009; PDF

On the “Galois closure” for torsors: Marco A. Garuti; Proc. Amer. Math. Soc. 137 (2009), 3575-3583; DOI: https://doi.org/10.1090/S0002-9939-09-09997-3; Published electronically: June 25, 2009; PDF

On the irreducible representations of a finite semigroup: Olexandr Ganyushkin, Volodymyr Mazorchuk and Benjamin Steinberg; Proc. Amer. Math. Soc. 137 (2009), 3585-3592; DOI: https://doi.org/10.1090/S0002-9939-09-09857-8; Published electronically: July 1, 2009; PDF

On singularities of primitive cohomology classes: Mark Andrea A. de Cataldo and Luca Migliorini; Proc. Amer. Math. Soc. 137 (2009), 3593-3600; DOI: https://doi.org/10.1090/S0002-9939-09-10014-X; Published electronically: June 18, 2009; PDF

A $2\times 2$ lattice space-time code of the highest rank: Shichun Yang, Bo He and Alain Togbé; Proc. Amer. Math. Soc. 137 (2009), 3601-3607; DOI: https://doi.org/10.1090/S0002-9939-09-10004-7; Published electronically: June 5, 2009; PDF

Bosonic realization of toroidal Lie algebras of classical types: Naihuan Jing, Kailash C. Misra and Chongbin Xu; Proc. Amer. Math. Soc. 137 (2009), 3609-3618; DOI: https://doi.org/10.1090/S0002-9939-09-09942-0; Published electronically: June 10, 2009; PDF

Geometric properties derived from generic initial spaces: Gunnar Fløystad and Mike Stillman; Proc. Amer. Math. Soc. 137 (2009), 3619-3625; DOI: https://doi.org/10.1090/S0002-9939-09-09946-8; Published electronically: May 29, 2009; PDF

Lyubeznik resolutions and the arithmetical rank of monomial ideals: Kyouko Kimura; Proc. Amer. Math. Soc. 137 (2009), 3627-3635; DOI: https://doi.org/10.1090/S0002-9939-09-09950-X; Published electronically: June 9, 2009; PDF

A stably elementary homotopy: Ravi A. Rao; Proc. Amer. Math. Soc. 137 (2009), 3637-3645; DOI: https://doi.org/10.1090/S0002-9939-09-09949-3; Published electronically: June 16, 2009; PDF

Tropicalization and irreducibility of generalized Vandermonde determinants: Carlos D’Andrea and Luis Felipe Tabera; Proc. Amer. Math. Soc. 137 (2009), 3647-3656; DOI: https://doi.org/10.1090/S0002-9939-09-09951-1; Published electronically: June 12, 2009; PDF

On endomorphism rings of $B_1$-groups that are not $B_2$-groups: Lutz Strüngmann; Proc. Amer. Math. Soc. 137 (2009), 3657-3668; DOI: https://doi.org/10.1090/S0002-9939-09-09954-7; Published electronically: June 15, 2009; PDF

Toeplitz and Hankel operators and Dixmier traces on the unit ball of $\mathbb C^n$: Miroslav Engliš, Kunyu Guo and Genkai Zhang; Proc. Amer. Math. Soc. 137 (2009), 3669-3678; DOI: https://doi.org/10.1090/S0002-9939-09-09331-9; Published electronically: June 16, 2009; PDF

Towards the carpenter’s theorem: Martín Argerami and Pedro Massey; Proc. Amer. Math. Soc. 137 (2009), 3679-3687; DOI: https://doi.org/10.1090/S0002-9939-09-09999-7; Published electronically: June 22, 2009; PDF

On the amenability of partial and enveloping actions: Fernando Abadie and Laura Martí Pérez; Proc. Amer. Math. Soc. 137 (2009), 3689-3693; DOI: https://doi.org/10.1090/S0002-9939-09-09998-5; Published electronically: June 11, 2009; PDF

Symmetry of integral equations on bounded domains: Dongsheng Li, Gerhard Ströhmer and Lihe Wang; Proc. Amer. Math. Soc. 137 (2009), 3695-3702; DOI: https://doi.org/10.1090/S0002-9939-09-09987-0; Published electronically: June 12, 2009; PDF

Harnack’s inequality for viscosity solutions to degenerate elliptic equations in two variables: G. Gripenberg; Proc. Amer. Math. Soc. 137 (2009), 3703-3708; DOI: https://doi.org/10.1090/S0002-9939-09-10030-8; Published electronically: June 25, 2009; PDF

Bicommutants of reduced unbounded operator algebras: Fabio Bagarello, Atsushi Inoue and Camillo Trapani; Proc. Amer. Math. Soc. 137 (2009), 3709-3716; DOI: https://doi.org/10.1090/S0002-9939-09-10023-0; Published electronically: June 29, 2009; PDF

A note on a result of M. Grossi: Florin Catrina; Proc. Amer. Math. Soc. 137 (2009), 3717-3724; DOI: https://doi.org/10.1090/S0002-9939-09-10031-X; Published electronically: June 12, 2009; PDF

A residual radial limit zero set: Michael C. Fulkerson; Proc. Amer. Math. Soc. 137 (2009), 3725-3731; DOI: https://doi.org/10.1090/S0002-9939-09-10034-5; Published electronically: June 15, 2009; PDF

Geometric rigidity for class $\mathcal {S}$ of transcendental meromorphic functions whose Julia sets are Jordan curves: Mariusz Urbański; Proc. Amer. Math. Soc. 137 (2009), 3733-3739; DOI: https://doi.org/10.1090/S0002-9939-09-09918-3; Published electronically: May 28, 2009; PDF

An operator algebraic proof of Agler’s factorization theorem: Sneh Lata, Meghna Mittal and Vern I. Paulsen; Proc. Amer. Math. Soc. 137 (2009), 3741-3748; DOI: https://doi.org/10.1090/S0002-9939-09-09928-6; Published electronically: May 27, 2009; PDF

Free Araki-Woods factors and Connes’ bicentralizer problem: Cyril Houdayer; Proc. Amer. Math. Soc. 137 (2009), 3749-3755; DOI: https://doi.org/10.1090/S0002-9939-09-09923-7; Published electronically: May 21, 2009; PDF

Substrictly cyclic operators: Ben Mathes; Proc. Amer. Math. Soc. 137 (2009), 3757-3762; DOI: https://doi.org/10.1090/S0002-9939-09-09938-9; Published electronically: May 28, 2009; PDF

A Katznelson-Tzafriri type theorem in Hilbert spaces: Zoltán Léka; Proc. Amer. Math. Soc. 137 (2009), 3763-3768; DOI: https://doi.org/10.1090/S0002-9939-09-09939-0; Published electronically: May 27, 2009; PDF

The uniform separation property and Banach-Stone theorems for lattice-valued Lipschitz functions: A. Jiménez-Vargas, A. Morales Campoy and Moisés Villegas-Vallecillos; Proc. Amer. Math. Soc. 137 (2009), 3769-3777; DOI: https://doi.org/10.1090/S0002-9939-09-09941-9; Published electronically: June 1, 2009; PDF

An index theorem for Toeplitz operators on the quarter-plane: Adel B. Badi; Proc. Amer. Math. Soc. 137 (2009), 3779-3786; DOI: https://doi.org/10.1090/S0002-9939-09-10007-2; Published electronically: June 9, 2009; PDF

Common hypercyclic functions for multiples of convolution and non-convolution operators: Luis Bernal-González; Proc. Amer. Math. Soc. 137 (2009), 3787-3795; DOI: https://doi.org/10.1090/S0002-9939-09-09943-2; Published electronically: June 5, 2009; PDF

Non-real eigenvalues of singular indefinite Sturm-Liouville operators: Jussi Behrndt, Qutaibeh Katatbeh and Carsten Trunk; Proc. Amer. Math. Soc. 137 (2009), 3797-3806; DOI: https://doi.org/10.1090/S0002-9939-09-09964-X; Published electronically: July 10, 2009; PDF

On the weaker forms of the specification property and their applications: Kenichiro Yamamoto; Proc. Amer. Math. Soc. 137 (2009), 3807-3814; DOI: https://doi.org/10.1090/S0002-9939-09-09937-7; Published electronically: June 10, 2009; PDF

Generalized dimension distortion under planar Sobolev homeomorphisms: Pekka Koskela, Aleksandra Zapadinskaya and Thomas Zürcher; Proc. Amer. Math. Soc. 137 (2009), 3815-3821; DOI: https://doi.org/10.1090/S0002-9939-09-09948-1; Published electronically: June 9, 2009; PDF

Reiter nets for semidirect products of amenable groups and semigroups: Benjamin Willson; Proc. Amer. Math. Soc. 137 (2009), 3823-3832; DOI: https://doi.org/10.1090/S0002-9939-09-09957-2; Published electronically: July 14, 2009; PDF

Hypercyclic $C_0$-semigroups and evolution families generated by first order differential operators: T. Kalmes; Proc. Amer. Math. Soc. 137 (2009), 3833-3848; DOI: https://doi.org/10.1090/S0002-9939-09-09955-9; Published electronically: June 18, 2009; PDF

Thompson isometries of the space of invertible positive operators: Lajos Molnár; Proc. Amer. Math. Soc. 137 (2009), 3849-3859; DOI: https://doi.org/10.1090/S0002-9939-09-09963-8; Published electronically: June 15, 2009; PDF

Compact composition operators on BMOA and the Bloch space: Hasi Wulan, Dechao Zheng and Kehe Zhu; Proc. Amer. Math. Soc. 137 (2009), 3861-3868; DOI: https://doi.org/10.1090/S0002-9939-09-09961-4; Published electronically: June 15, 2009; PDF

Estimates for unimodular Fourier multipliers on modulation spaces: Akihiko Miyachi, Fabio Nicola, Silvia Rivetti, Anita Tabacco and Naohito Tomita; Proc. Amer. Math. Soc. 137 (2009), 3869-3883; DOI: https://doi.org/10.1090/S0002-9939-09-09968-7; Published electronically: June 22, 2009; PDF

Rational approximation schemes for solutions of the first and second order Cauchy problem: Patricio Jara; Proc. Amer. Math. Soc. 137 (2009), 3885-3898; DOI: https://doi.org/10.1090/S0002-9939-09-09891-8; Published electronically: July 10, 2009; PDF

Verification of polytopes by brightness functions: Rolf Schneider; Proc. Amer. Math. Soc. 137 (2009), 3899-3903; DOI: https://doi.org/10.1090/S0002-9939-09-10041-2; Published electronically: June 25, 2009; PDF

Complete real hypersurfaces in compact rank one symmetric spaces: Tatsuyoshi Hamada and Katsuhiro Shiohama; Proc. Amer. Math. Soc. 137 (2009), 3905-3910; DOI: https://doi.org/10.1090/S0002-9939-09-09959-6; Published electronically: June 9, 2009; PDF

On genericity and weight in the free group: Anand Pillay; Proc. Amer. Math. Soc. 137 (2009), 3911-3917; DOI: https://doi.org/10.1090/S0002-9939-09-09956-0; Published electronically: June 18, 2009; PDF

Betti numbers and injectivity radii: Marc Culler and Peter B. Shalen; Proc. Amer. Math. Soc. 137 (2009), 3919-3922; DOI: https://doi.org/10.1090/S0002-9939-09-09966-3; Published electronically: June 18, 2009; PDF

Vanishing of extensions of twisted Verma modules: Noriyuki Abe; Proc. Amer. Math. Soc. 137 (2009), 3923-3926; DOI: https://doi.org/10.1090/S0002-9939-09-09958-4; Published electronically: June 12, 2009; PDF

A fundamental dichotomy for Julia sets of a family of elliptic functions: L. Koss; Proc. Amer. Math. Soc. 137 (2009), 3927-3938; DOI: https://doi.org/10.1090/S0002-9939-09-09967-5; Published electronically: June 29, 2009; PDF

A parametrized fixed point theorem: Vesta Coufal; Proc. Amer. Math. Soc. 137 (2009), 3939-3942; DOI: https://doi.org/10.1090/S0002-9939-09-09978-X; Published electronically: July 13, 2009; PDF

Constructing non-congruence subgroups of flexible hyperbolic 3-manifold groups: D. Cooper, D. D. Long and M. Thistlethwaite; Proc. Amer. Math. Soc. 137 (2009), 3943-3949; DOI: https://doi.org/10.1090/S0002-9939-09-09986-9; Published electronically: June 25, 2009; PDF

Corrigendum to: “Focal loci of families and the genus of curves on surfaces”: Luca Chiantini and Angelo Felice Lopez; Proc. Amer. Math. Soc. 137 (2009), 3951-3951; DOI: https://doi.org/10.1090/S0002-9939-09-10027-8; Published electronically: July 1, 2009; PDF