Contents of Volume 137, Number 4

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Gröbnerian Dickson polynomials

Müfit Sezer; Özgün Ünlü
Proc. Amer. Math. Soc. 137 (2009), 1169-1173.
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A family of local rings with rational Poincaré series

Juan Elias; Giuseppe Valla
Proc. Amer. Math. Soc. 137 (2009), 1175-1178.
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Congruence properties of Hermitian modular forms

Toshiyuki Kikuta; Shoyu Nagaoka
Proc. Amer. Math. Soc. 137 (2009), 1179-1184.
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Integers represented as the sum of one prime, two squares of primes and powers of $2$

Guangshi Lü; Haiwei Sun
Proc. Amer. Math. Soc. 137 (2009), 1185-1191.
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Galois scaffolding in one-dimensional elementary abelian extensions

G. Griffith Elder
Proc. Amer. Math. Soc. 137 (2009), 1193-1203.
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Vanishing of modular forms at infinity

Scott Ahlgren; Nadia Masri; Jeremy Rouse
Proc. Amer. Math. Soc. 137 (2009), 1205-1214.
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Pfister's theorem for orthogonal involutions of degree 12

Skip Garibaldi; Anne Quéguiner-Mathieu
Proc. Amer. Math. Soc. 137 (2009), 1215-1222.
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Producing set-theoretic complete intersection monomial curves in $\mathbb {P}^n$

Mesut Sahin
Proc. Amer. Math. Soc. 137 (2009), 1223-1233.
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Set-theoretic Hida projectors

Avner Ash
Proc. Amer. Math. Soc. 137 (2009), 1235-1237.
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On genus change in algebraic curves over imperfect fields

Stefan Schröer
Proc. Amer. Math. Soc. 137 (2009), 1239-1243.
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Group gradings on simple Lie algebras in positive characteristic

Yuri Bahturin; Mikhail Kochetov; Susan Montgomery
Proc. Amer. Math. Soc. 137 (2009), 1245-1254.
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A characterization of finite prehomogeneous vector spaces associated with products of special linear groups and Dynkin quivers

Makoto Nagura; Shin-ichi Otani; Daisuke Takeda
Proc. Amer. Math. Soc. 137 (2009), 1255-1264.
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Relative Brauer groups in characteristic $p$

Roberto Aravire; Bill Jacob
Proc. Amer. Math. Soc. 137 (2009), 1265-1273.
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An algebraic independence result for Euler products of finite degree

Alexandru Zaharescu; Mohammad Zaki
Proc. Amer. Math. Soc. 137 (2009), 1275-1283.
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The group ring of $\mathbb {Q}/\mathbb {Z}$ and an application of a divisor problem

Alan K. Haynes; Kosuke Homma
Proc. Amer. Math. Soc. 137 (2009), 1285-1293.
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Powers of Coxeter elements in infinite groups are reduced

David E. Speyer
Proc. Amer. Math. Soc. 137 (2009), 1295-1302.
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Transcendence of power series for some number theoretic functions

Peter Borwein; Michael Coons
Proc. Amer. Math. Soc. 137 (2009), 1303-1305.
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Admissible local systems for a class of line arrangements

Shaheen Nazir; Zahid Raza
Proc. Amer. Math. Soc. 137 (2009), 1307-1313.
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On endomorphism rings and dimensions of local cohomology modules

Peter Schenzel
Proc. Amer. Math. Soc. 137 (2009), 1315-1322.
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Irreducible representations of groupoid $C^*$-algebras

Marius Ionescu; Dana P. Williams
Proc. Amer. Math. Soc. 137 (2009), 1323-1332.
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On the classification of solutions of $-\Delta u= e^u$ on $\mathbb {R}^N$: Stability outside a compact set and applications

E. N. Dancer; Alberto Farina
Proc. Amer. Math. Soc. 137 (2009), 1333-1338.
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On the localization principle for the automorphisms of pseudoellipsoids

Mario Landucci; Andrea Spiro
Proc. Amer. Math. Soc. 137 (2009), 1339-1345.
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Linearly approximatable functions

Thierry De Pauw; Amos Koeller
Proc. Amer. Math. Soc. 137 (2009), 1347-1356.
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Invariant subspaces of super left-commutants

Hailegebriel E. Gessesse
Proc. Amer. Math. Soc. 137 (2009), 1357-1361.
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Convergence of weighted polynomial multiple ergodic averages

Qing Chu
Proc. Amer. Math. Soc. 137 (2009), 1363-1369.
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A short proof of Pitt's compactness theorem

Sylvain Delpech
Proc. Amer. Math. Soc. 137 (2009), 1371-1372.
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Smoothness of radial solutions to Monge-Ampère equations

Cristian Rios; Eric T. Sawyer
Proc. Amer. Math. Soc. 137 (2009), 1373-1379.
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Linear isometries between spaces of vector-valued Lipschitz functions

A. Jiménez-Vargas; Moisés Villegas-Vallecillos
Proc. Amer. Math. Soc. 137 (2009), 1381-1388.
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Piecewise contractions are asymptotically periodic

Henk Bruin; Jonathan H. B. Deane
Proc. Amer. Math. Soc. 137 (2009), 1389-1395.
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Multiples of hypercyclic operators

Catalin Badea; Sophie Grivaux; Vladimir Müller
Proc. Amer. Math. Soc. 137 (2009), 1397-1403.
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Totally free arrangements of hyperplanes

Takuro Abe; Hiroaki Terao; Masahiko Yoshinaga
Proc. Amer. Math. Soc. 137 (2009), 1405-1410.
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Hyperbolic dimension and radial Julia sets of transcendental functions

Lasse Rempe
Proc. Amer. Math. Soc. 137 (2009), 1411-1420.
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On the topology of pointwise convergence on the boundaries of $L_1$-preduals

Warren B. Moors; Jirí Spurny
Proc. Amer. Math. Soc. 137 (2009), 1421-1429.
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Analyticity of the SRB measure for holomorphic families of quadratic-like Collet-Eckmann maps

Viviane Baladi; Daniel Smania
Proc. Amer. Math. Soc. 137 (2009), 1431-1437.
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Affine interval exchange transformations with flips and wandering intervals

C. Gutierrez; S. Lloyd; B. Pires
Proc. Amer. Math. Soc. 137 (2009), 1439-1445.
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A convexity theorem for the real part of a Borel invariant subvariety

Timothy E. Goldberg
Proc. Amer. Math. Soc. 137 (2009), 1447-1458.
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Bounded harmonic $1$-forms on complete manifolds

M. Cocos
Proc. Amer. Math. Soc. 137 (2009), 1459-1465.
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On the discrete heat equation taking values on a tree

Carl Mueller; Kijung Lee
Proc. Amer. Math. Soc. 137 (2009), 1467-1478.
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A lower bound for the Chung-Diaconis-Graham random process

Martin Hildebrand
Proc. Amer. Math. Soc. 137 (2009), 1479-1487.
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On the Lusternik-Schnirelmann category of spaces with 2-dimensional fundamental group

Alexander N. Dranishnikov
Proc. Amer. Math. Soc. 137 (2009), 1489-1497.
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Orbit-counting for nilpotent group shifts

Richard Miles; Thomas Ward
Proc. Amer. Math. Soc. 137 (2009), 1499-1507.
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The bounding genera and $w$-invariants

Yoshihiro Fukumoto
Proc. Amer. Math. Soc. 137 (2009), 1509-1517.
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Rational homotopy of gauge groups

Yves Félix; John Oprea
Proc. Amer. Math. Soc. 137 (2009), 1519-1527.
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