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 137, Number 7
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Regularity index of Hilbert functions of powers of ideals: Tran Nam Trung; Proc. Amer. Math. Soc. 137 (2009), 2169-2174; DOI: https://doi.org/10.1090/S0002-9939-09-09640-3; Published electronically: February 12, 2009; PDF

A remark on multivalued algebraic groups: Anand Pillay; Proc. Amer. Math. Soc. 137 (2009), 2175-2180; DOI: https://doi.org/10.1090/S0002-9939-08-09745-1; Published electronically: December 18, 2008; PDF

Constructing big indecomposable modules: Andrew Crabbe and Janet Striuli; Proc. Amer. Math. Soc. 137 (2009), 2181-2189; DOI: https://doi.org/10.1090/S0002-9939-09-09760-3; Published electronically: January 26, 2009; PDF

On the number of solutions of the linear equation in finite Carlitz modules: Chih-Nung Hsu and Ting-Ting Nan; Proc. Amer. Math. Soc. 137 (2009), 2191-2200; DOI: https://doi.org/10.1090/S0002-9939-09-09747-0; Published electronically: January 13, 2009; PDF

Finiteness of Gorenstein injective dimension of modules: Leila Khatami, Massoud Tousi and Siamak Yassemi; Proc. Amer. Math. Soc. 137 (2009), 2201-2207; DOI: https://doi.org/10.1090/S0002-9939-09-09784-6; Published electronically: January 26, 2009; PDF

On some permutation polynomials over $\mathbb {F}_q$ of the form $x^r h(x^{(q-1)/d})$: Michael E. Zieve; Proc. Amer. Math. Soc. 137 (2009), 2209-2216; DOI: https://doi.org/10.1090/S0002-9939-08-09767-0; Published electronically: December 22, 2008; PDF

Bilinear sums with exponential functions: Igor E. Shparlinski; Proc. Amer. Math. Soc. 137 (2009), 2217-2224; DOI: https://doi.org/10.1090/S0002-9939-09-09882-7; Published electronically: March 4, 2009; PDF

Gluing and Hilbert functions of monomial curves: Feza Arslan, Pinar Mete and Mesut Şahi̇n; Proc. Amer. Math. Soc. 137 (2009), 2225-2232; DOI: https://doi.org/10.1090/S0002-9939-08-09785-2; Published electronically: December 31, 2008; PDF

Tropical bases by regular projections: Kerstin Hept and Thorsten Theobald; Proc. Amer. Math. Soc. 137 (2009), 2233-2241; DOI: https://doi.org/10.1090/S0002-9939-09-09843-8; Published electronically: February 18, 2009; PDF

Lévy constants of transcendental numbers: Christoph Baxa; Proc. Amer. Math. Soc. 137 (2009), 2243-2249; DOI: https://doi.org/10.1090/S0002-9939-09-09787-1; Published electronically: January 28, 2009; PDF

Infinitely generated Lawson homology groups on some rational projective varieties: Wenchuan Hu; Proc. Amer. Math. Soc. 137 (2009), 2251-2264; DOI: https://doi.org/10.1090/S0002-9939-08-09798-0; Published electronically: December 23, 2008; PDF

Rings whose modules are direct sums of extending modules: Noyan Er; Proc. Amer. Math. Soc. 137 (2009), 2265-2271; DOI: https://doi.org/10.1090/S0002-9939-09-09807-4; Published electronically: January 30, 2009; PDF

Proper actions which are not saturated: Damián Marelli and Iain Raeburn; Proc. Amer. Math. Soc. 137 (2009), 2273-2283; DOI: https://doi.org/10.1090/S0002-9939-09-09867-0; Published electronically: March 11, 2009; PDF

Subanalytic blow-$\mathcal {C}^m$ functions: Andreas Fischer and Krzysztof Kurdyka; Proc. Amer. Math. Soc. 137 (2009), 2285-2291; DOI: https://doi.org/10.1090/S0002-9939-09-09643-9; Published electronically: February 12, 2009; PDF

Perturbative solutions to the extended constant scalar curvature equations on asymptotically hyperbolic manifolds: Erwann Delay; Proc. Amer. Math. Soc. 137 (2009), 2293-2298; DOI: https://doi.org/10.1090/S0002-9939-09-09703-2; Published electronically: February 20, 2009; PDF

A Payne-Weinberger eigenvalue estimate for wedge domains on spheres: Jesse Ratzkin and Andrejs Treibergs; Proc. Amer. Math. Soc. 137 (2009), 2299-2309; DOI: https://doi.org/10.1090/S0002-9939-09-09790-1; Published electronically: March 3, 2009; PDF

Off-diagonal matrix coefficients are tangents to state space: Orientation and C*-algebras: Martin E. Walter; Proc. Amer. Math. Soc. 137 (2009), 2311-2315; DOI: https://doi.org/10.1090/S0002-9939-09-09868-2; Published electronically: February 18, 2009; PDF

Explicit orthogonal polynomials for reciprocal polynomial weights on $(-\infty ,\infty )$: D. S. Lubinsky; Proc. Amer. Math. Soc. 137 (2009), 2317-2327; DOI: https://doi.org/10.1090/S0002-9939-08-09754-2; Published electronically: December 18, 2008; PDF

Meromorphic functions with linearly distributed values and Julia sets of rational functions: Walter Bergweiler and Alexandre Eremenko; Proc. Amer. Math. Soc. 137 (2009), 2329-2333; DOI: https://doi.org/10.1090/S0002-9939-08-09788-8; Published electronically: December 22, 2008; PDF

Uniqueness and non-uniqueness in inverse radiative transfer: Plamen Stefanov and Alexandru Tamasan; Proc. Amer. Math. Soc. 137 (2009), 2335-2344; DOI: https://doi.org/10.1090/S0002-9939-09-09839-6; Published electronically: February 17, 2009; PDF

Vector measures and the strong operator topology: Paul Lewis, Kimberly Muller and Andy Yingst; Proc. Amer. Math. Soc. 137 (2009), 2345-2350; DOI: https://doi.org/10.1090/S0002-9939-09-09797-4; Published electronically: January 30, 2009; PDF

Extremal problems of Chebyshev type: Franz Peherstorfer; Proc. Amer. Math. Soc. 137 (2009), 2351-2361; DOI: https://doi.org/10.1090/S0002-9939-09-09771-8; Published electronically: January 13, 2009; PDF

Integral representation for Neumann series of Bessel functions: Tibor K. Pogány and Endre Süli; Proc. Amer. Math. Soc. 137 (2009), 2363-2368; DOI: https://doi.org/10.1090/S0002-9939-09-09796-2; Published electronically: January 22, 2009; PDF

A reciprocity theorem for certain hypergeometric series: Bruce C. Berndt and Dimitris Koukoulopoulos; Proc. Amer. Math. Soc. 137 (2009), 2369-2373; DOI: https://doi.org/10.1090/S0002-9939-09-09777-9; Published electronically: January 6, 2009; PDF

Pointwise approximation by elementary complete contractions: Bojan Magajna; Proc. Amer. Math. Soc. 137 (2009), 2375-2385; DOI: https://doi.org/10.1090/S0002-9939-09-09781-0; Published electronically: January 29, 2009; PDF

Asymptotic behavior of nonexpansive mappings in finite dimensional normed spaces: Brian Lins; Proc. Amer. Math. Soc. 137 (2009), 2387-2392; DOI: https://doi.org/10.1090/S0002-9939-08-09779-7; Published electronically: December 23, 2008; PDF

$K$-exact groups and coarsely embeddable groups: Semaı̇l Ülgen Yildirim; Proc. Amer. Math. Soc. 137 (2009), 2393-2402; DOI: https://doi.org/10.1090/S0002-9939-09-09870-0; Published electronically: February 17, 2009; PDF

Conformally stationary Lorentzian tori with no conjugate points are flat: Francisco J. Palomo and Alfonso Romero; Proc. Amer. Math. Soc. 137 (2009), 2403-2406; DOI: https://doi.org/10.1090/S0002-9939-09-09847-5; Published electronically: February 24, 2009; PDF

Concentration of $1$-Lipschitz maps into an infinite dimensional $\ell ^p$-ball with the $\ell ^q$-distance function: Kei Funano; Proc. Amer. Math. Soc. 137 (2009), 2407-2417; DOI: https://doi.org/10.1090/S0002-9939-09-09873-6; Published electronically: March 12, 2009; PDF

Moser stability for locally conformally symplectic structures: G. Bande and D. Kotschick; Proc. Amer. Math. Soc. 137 (2009), 2419-2424; DOI: https://doi.org/10.1090/S0002-9939-09-09821-9; Published electronically: January 28, 2009; PDF

On closed sets with convex projections under somewhere dense sets of directions: Stoyu Barov and Jan J. Dijkstra; Proc. Amer. Math. Soc. 137 (2009), 2425-2435; DOI: https://doi.org/10.1090/S0002-9939-09-09804-9; Published electronically: February 12, 2009; PDF

Classification of almost quarter-pinched manifolds: Peter Petersen and Terence Tao; Proc. Amer. Math. Soc. 137 (2009), 2437-2440; DOI: https://doi.org/10.1090/S0002-9939-09-09802-5; Published electronically: January 30, 2009; PDF

Helicoidal graphs with prescribed mean curvature: Marcos Dajczer and Jorge Herbert S. de Lira; Proc. Amer. Math. Soc. 137 (2009), 2441-2444; DOI: https://doi.org/10.1090/S0002-9939-09-09801-3; Published electronically: January 28, 2009; PDF

Curvature estimates for minimal surfaces with total boundary curvature less than 4$\pi$: Giuseppe Tinaglia; Proc. Amer. Math. Soc. 137 (2009), 2445-2450; DOI: https://doi.org/10.1090/S0002-9939-09-09810-4; Published electronically: February 6, 2009; PDF

Twisting quasi-alternating links: Abhijit Champanerkar and Ilya Kofman; Proc. Amer. Math. Soc. 137 (2009), 2451-2458; DOI: https://doi.org/10.1090/S0002-9939-09-09876-1; Published electronically: March 10, 2009; PDF

Khovanov-Rozansky homology and the braid index of a knot: Keiko Kawamuro; Proc. Amer. Math. Soc. 137 (2009), 2459-2469; DOI: https://doi.org/10.1090/S0002-9939-09-09743-3; Published electronically: February 23, 2009; PDF

Combinatorial proofs of the Lambda algebra basis and EHP sequence: William Richter; Proc. Amer. Math. Soc. 137 (2009), 2471-2482; DOI: https://doi.org/10.1090/S0002-9939-09-09763-9; Published electronically: January 6, 2009; PDF

The number of minimal right ideals of $\beta G$: Yevhen Zelenyuk; Proc. Amer. Math. Soc. 137 (2009), 2483-2488; DOI: https://doi.org/10.1090/S0002-9939-09-09791-3; Published electronically: February 25, 2009; PDF

On a product in the classical Adams spectral sequence: Xiugui Liu and Hao Zhao; Proc. Amer. Math. Soc. 137 (2009), 2489-2496; DOI: https://doi.org/10.1090/S0002-9939-09-09809-8; Published electronically: February 11, 2009; PDF