Contents of Volume 137, Number 6

All articles in this issue are freely accessible.

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Minimal polynomial of an exponential automorphism of $\mathbb {C}^n$

Jakub Zygadło.
Proc. Amer. Math. Soc. 137 (2009), 1849-1853
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MathSciNet review: 2480263

Torsion of the symmetric algebra and implicitization

Laurent Busé, Marc Chardin and Jean-Pierre Jouanolou.
Proc. Amer. Math. Soc. 137 (2009), 1855-1865
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MathSciNet review: 2480264

Reduction theorems for Noether’s problem

Ming-chang Kang and Bernat Plans.
Proc. Amer. Math. Soc. 137 (2009), 1867-1874
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MathSciNet review: 2480265

A Littlewood-Richardson rule for Grassmannian permutations

Kevin Purbhoo and Frank Sottile.
Proc. Amer. Math. Soc. 137 (2009), 1875-1882
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MathSciNet review: 2480266

Regularity and Segre-Veronese embeddings

David A. Cox and Evgeny Materov.
Proc. Amer. Math. Soc. 137 (2009), 1883-1890
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MathSciNet review: 2480267

The group of order preserving automorphisms of the ring of differential operators on a Laurent polynomial algebra in prime characteristic

V. V. Bavula.
Proc. Amer. Math. Soc. 137 (2009), 1891-1898
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MathSciNet review: 2480268

Cycles on Nash algebraic models of smooth manifolds

Wojciech Kucharz.
Proc. Amer. Math. Soc. 137 (2009), 1899-1906
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MathSciNet review: 2480269

The ghost dimension of a ring

Mark Hovey and Keir Lockridge.
Proc. Amer. Math. Soc. 137 (2009), 1907-1913
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MathSciNet review: 2480270

The crystal $\mathcal {B}(\infty )$ and extended Nakajima monomials

Hyeonmi Lee.
Proc. Amer. Math. Soc. 137 (2009), 1915-1924
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MathSciNet review: 2480271

Semisimplicity criteria for irreducible Hopf algebras in positive characteristic

Akira Masuoka.
Proc. Amer. Math. Soc. 137 (2009), 1925-1932
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MathSciNet review: 2480272

New results on the least common multiple of consecutive integers

Bakir Farhi and Daniel Kane.
Proc. Amer. Math. Soc. 137 (2009), 1933-1939
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MathSciNet review: 2480273

The Auslander-Reiten conjecture for Gorenstein rings

Tokuji Araya.
Proc. Amer. Math. Soc. 137 (2009), 1941-1944
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MathSciNet review: 2480274

Asymptotic depth of twisted higher direct image sheaves

Renate Bär and Markus Brodmann.
Proc. Amer. Math. Soc. 137 (2009), 1945-1950
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MathSciNet review: 2480275

Descent on elliptic curves and Hilbert’s tenth problem

Kirsten Eisenträger and Graham Everest.
Proc. Amer. Math. Soc. 137 (2009), 1951-1959
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MathSciNet review: 2480276

Average behavior of Fourier coefficients of cusp forms

Guangshi Lü.
Proc. Amer. Math. Soc. 137 (2009), 1961-1969
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MathSciNet review: 2480277

Boundary points as limit functions of iterated holomorphic function systems

Kourosh Tavakoli.
Proc. Amer. Math. Soc. 137 (2009), 1971-1976
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MathSciNet review: 2480278

On the existence of infinite energy solutions for nonlinear Schrödinger equations

Pablo Braz e Silva, Lucas C. F. Ferreira and Elder J. Villamizar-Roa.
Proc. Amer. Math. Soc. 137 (2009), 1977-1987
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MathSciNet review: 2480279

Borg-type uniqueness theorems for periodic Jacobi operators with matrix-valued coefficients

Evgeny Korotyaev and Anton Kutsenko.
Proc. Amer. Math. Soc. 137 (2009), 1989-1996
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MathSciNet review: 2480280

In orbifolds, small isoperimetric regions are small balls

Frank Morgan.
Proc. Amer. Math. Soc. 137 (2009), 1997-2004
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MathSciNet review: 2480281

Existence and uniqueness of Tronquée solutions of the fourth-order Jimbo-Miwa second Painlevé equation

Nalini Joshi and Tegan Morrison.
Proc. Amer. Math. Soc. 137 (2009), 2005-2014
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MathSciNet review: 2480282

Electrical response matrix of a regular $2n$-gon

Nathaniel D. Blair-Stahn and David B. Wilson.
Proc. Amer. Math. Soc. 137 (2009), 2015-2025
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MathSciNet review: 2480283

Lipschitzness of the Lempert and Green functions

Nikolai Nikolov, Peter Pflug and Pascal J. Thomas.
Proc. Amer. Math. Soc. 137 (2009), 2027-2036
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MathSciNet review: 2480284

Optimal regularity for the Poisson equation

Lihe Wang, Fengping Yao, Shulin Zhou and Huilian Jia.
Proc. Amer. Math. Soc. 137 (2009), 2037-2047
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MathSciNet review: 2480285

Cyclic behavior of the Cesàro operator on $L_2(0,\infty )$

M. González and F. León-Saavedra.
Proc. Amer. Math. Soc. 137 (2009), 2049-2055
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MathSciNet review: 2480286

A note on Cheeger sets

Alessio Figalli, Francesco Maggi and Aldo Pratelli.
Proc. Amer. Math. Soc. 137 (2009), 2057-2062
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MathSciNet review: 2480287

When lower entropy implies stronger Devaney chaos

Grzegorz Harańczyk and Dominik Kwietniak.
Proc. Amer. Math. Soc. 137 (2009), 2063-2073
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MathSciNet review: 2480288

Remarks on the blow-up of solutions to a toy model for the Navier-Stokes equations

Isabelle Gallagher and Marius Paicu.
Proc. Amer. Math. Soc. 137 (2009), 2075-2083
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MathSciNet review: 2480289

On gradient Ricci solitons with symmetry

Peter Petersen and William Wylie.
Proc. Amer. Math. Soc. 137 (2009), 2085-2092
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MathSciNet review: 2480290

Area growth rate of the level surface of the potential function on the 3-dimensional steady gradient Ricci soliton

Hongxin Guo.
Proc. Amer. Math. Soc. 137 (2009), 2093-2097
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MathSciNet review: 2480291

$K$-trivial degrees and the jump-traceability hierarchy

George Barmpalias, Rod Downey and Noam Greenberg.
Proc. Amer. Math. Soc. 137 (2009), 2099-2109
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MathSciNet review: 2480292

Equidistribution of dilations of polynomial curves in nilmanifolds

Michael Björklund and Alexander Fish.
Proc. Amer. Math. Soc. 137 (2009), 2111-2123
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MathSciNet review: 2480293

A study of counts of Bernoulli strings via conditional Poisson processes

Fred W. Huffer, Jayaram Sethuraman and Sunder Sethuraman.
Proc. Amer. Math. Soc. 137 (2009), 2125-2134
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MathSciNet review: 2480294

On a problem of Borsuk and Ulam

Alexander Y. Gordon.
Proc. Amer. Math. Soc. 137 (2009), 2135-2137
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MathSciNet review: 2480295

Generic spectral simplicity of polygons

Luc Hillairet and Chris Judge.
Proc. Amer. Math. Soc. 137 (2009), 2139-2145
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MathSciNet review: 2480296

The Laitinen Conjecture for finite solvable Oliver groups

Krzysztof Pawałowski and Toshio Sumi.
Proc. Amer. Math. Soc. 137 (2009), 2147-2156
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MathSciNet review: 2480297

Spanning trees and Khovanov homology

Abhijit Champanerkar and Ilya Kofman.
Proc. Amer. Math. Soc. 137 (2009), 2157-2167
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MathSciNet review: 2480298