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 11
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Polynomials in $\mathbb {R}[x,y]$ that are sums of squares in $\mathbb {R}(x,y)$: David B. Leep and Colin L. Starr; Proc. Amer. Math. Soc. 129 (2001), 3133-3141; DOI: https://doi.org/10.1090/S0002-9939-01-05927-5; Published electronically: April 9, 2001; PDF

On the homology of split extensions with $p$–elementary kernel: Marcin Chalupnik; Proc. Amer. Math. Soc. 129 (2001), 3143-3149; DOI: https://doi.org/10.1090/S0002-9939-01-05987-1; Published electronically: April 16, 2001; PDF

Hilbert modular pseudodifferential operators: Min Ho Lee; Proc. Amer. Math. Soc. 129 (2001), 3151-3160; DOI: https://doi.org/10.1090/S0002-9939-01-06117-2; Published electronically: April 9, 2001; PDF

Finite groups embeddable in division rings: T. Y. Lam; Proc. Amer. Math. Soc. 129 (2001), 3161-3166; DOI: https://doi.org/10.1090/S0002-9939-01-05961-5; Published electronically: April 17, 2001; PDF

On homology of real algebraic varieties: Yıldıray Ozan; Proc. Amer. Math. Soc. 129 (2001), 3167-3175; DOI: https://doi.org/10.1090/S0002-9939-01-06065-8; Published electronically: April 9, 2001; PDF

A generalization of the Lipschitz summation formula and some applications: Paul C. Pasles and Wladimir de Azevedo Pribitkin; Proc. Amer. Math. Soc. 129 (2001), 3177-3184; DOI: https://doi.org/10.1090/S0002-9939-01-06038-5; Published electronically: April 2, 2001; PDF

Defending the negated Kaplansky conjecture: Akira Masuoka; Proc. Amer. Math. Soc. 129 (2001), 3185-3192; DOI: https://doi.org/10.1090/S0002-9939-01-06005-1; Published electronically: May 10, 2001; PDF

Characterization of completions of reduced local rings: Dan Lee, Leanne Leer, Shara Pilch and Yu Yasufuku; Proc. Amer. Math. Soc. 129 (2001), 3193-3200; DOI: https://doi.org/10.1090/S0002-9939-01-05962-7; Published electronically: May 21, 2001; PDF

On the number of conjugacy class sizes and character degrees in finite $p$-groups: Gustavo A. Fernández-Alcober and Alexander Moretó; Proc. Amer. Math. Soc. 129 (2001), 3201-3204; DOI: https://doi.org/10.1090/S0002-9939-01-05946-9; Published electronically: March 29, 2001; PDF

A characterization of bilateral operator weighted shifts being Cowen-Douglas operators: You Qing Ji, Juexian Li and Yihua Yang; Proc. Amer. Math. Soc. 129 (2001), 3205-3210; DOI: https://doi.org/10.1090/S0002-9939-01-06031-2; Published electronically: May 21, 2001; PDF

A simple proof for Schur’s theorem: R. A. Kortram; Proc. Amer. Math. Soc. 129 (2001), 3211-3212; DOI: https://doi.org/10.1090/S0002-9939-01-06199-8; Published electronically: May 21, 2001; PDF

Asymptotics of orthonormal polynomials in the presence of a denumerable set of mass points: Franz Peherstorfer and Peter Yuditskii; Proc. Amer. Math. Soc. 129 (2001), 3213-3220; DOI: https://doi.org/10.1090/S0002-9939-01-06205-0; Published electronically: May 21, 2001; PDF

Rotation numbers in the infinite annulus: Patrice Le Calvez; Proc. Amer. Math. Soc. 129 (2001), 3221-3230; DOI: https://doi.org/10.1090/S0002-9939-01-06165-2; Published electronically: June 6, 2001; PDF

A universal property of reflexive hereditarily indecomposable Banach spaces: Spiros A. Argyros; Proc. Amer. Math. Soc. 129 (2001), 3231-3239; DOI: https://doi.org/10.1090/S0002-9939-01-05980-9; Published electronically: April 16, 2001; PDF

Areas of two-dimensional moduli spaces: Toshihiro Nakanishi and Marjatta Näätänen; Proc. Amer. Math. Soc. 129 (2001), 3241-3252; DOI: https://doi.org/10.1090/S0002-9939-01-06010-5; Published electronically: April 2, 2001; PDF

Spectral synthesis for $A(G)$ and subspaces of $VN(G)$: Eberhard Kaniuth and Anthony T. Lau; Proc. Amer. Math. Soc. 129 (2001), 3253-3263; DOI: https://doi.org/10.1090/S0002-9939-01-05924-X; Published electronically: April 9, 2001; PDF

On characterizations of multiwavelets in $L^{2}(\mathbb {R}^n)$: Marcin Bownik; Proc. Amer. Math. Soc. 129 (2001), 3265-3274; DOI: https://doi.org/10.1090/S0002-9939-01-05942-1; Published electronically: March 29, 2001; PDF

A generalized Schwarz lemma at the boundary: Dov Chelst; Proc. Amer. Math. Soc. 129 (2001), 3275-3278; DOI: https://doi.org/10.1090/S0002-9939-01-06144-5; Published electronically: June 6, 2001; PDF

Revêtements et isométries pour la métrique infinitésimale de Kobayashi: Jean-Pierre Vigué; Proc. Amer. Math. Soc. 129 (2001), 3279-3284; DOI: https://doi.org/10.1090/S0002-9939-01-05977-9; Published electronically: March 29, 2001; PDF

Spectral radius of the sampling operator with continuous symbol: Mark C. Ho; Proc. Amer. Math. Soc. 129 (2001), 3285-3295; DOI: https://doi.org/10.1090/S0002-9939-01-06057-9; Published electronically: April 9, 2001; PDF

Dunford–Pettis sets: Paul Lewis; Proc. Amer. Math. Soc. 129 (2001), 3297-3302; DOI: https://doi.org/10.1090/S0002-9939-01-05963-9; Published electronically: April 2, 2001; PDF

Fourier restriction for affine arclength measures in the plane: Daniel M. Oberlin; Proc. Amer. Math. Soc. 129 (2001), 3303-3305; DOI: https://doi.org/10.1090/S0002-9939-01-06012-9; Published electronically: April 2, 2001; PDF

The structure of quantum spheres: Albert Jeu-Liang Sheu; Proc. Amer. Math. Soc. 129 (2001), 3307-3311; DOI: https://doi.org/10.1090/S0002-9939-01-06042-7; Published electronically: April 2, 2001; PDF

A note on extensions of asymptotic density: A. Blass, R. Frankiewicz, G. Plebanek and C. Ryll–Nardzewski; Proc. Amer. Math. Soc. 129 (2001), 3313-3320; DOI: https://doi.org/10.1090/S0002-9939-01-05941-X; Published electronically: April 9, 2001; PDF

The canonical solution operator to $\overline {\partial }$ restricted to Bergman spaces: Friedrich Haslinger; Proc. Amer. Math. Soc. 129 (2001), 3321-3329; DOI: https://doi.org/10.1090/S0002-9939-01-05953-6; Published electronically: April 2, 2001; PDF

On the Berezin-Toeplitz calculus: L. A. Coburn; Proc. Amer. Math. Soc. 129 (2001), 3331-3338; DOI: https://doi.org/10.1090/S0002-9939-01-05917-2; Published electronically: March 29, 2001; PDF

An operator inequality related to Jensen’s inequality: Mitsuru Uchiyama; Proc. Amer. Math. Soc. 129 (2001), 3339-3344; DOI: https://doi.org/10.1090/S0002-9939-01-06130-5; Published electronically: April 9, 2001; PDF

A nicely behaved singular integral on a purely unrectifiable set: Petri Huovinen; Proc. Amer. Math. Soc. 129 (2001), 3345-3351; DOI: https://doi.org/10.1090/S0002-9939-01-05955-X; Published electronically: April 2, 2001; PDF

Blowup in a mass-conserving convection-diffusion equation with superquadratic nonlinearity: Todd L. Fisher and Christopher P. Grant; Proc. Amer. Math. Soc. 129 (2001), 3353-3362; DOI: https://doi.org/10.1090/S0002-9939-01-05992-5; Published electronically: April 9, 2001; PDF

Quasiconformal variation of slit domains: Clifford J. Earle and Adam Lawrence Epstein; Proc. Amer. Math. Soc. 129 (2001), 3363-3372; DOI: https://doi.org/10.1090/S0002-9939-01-05991-3; Published electronically: January 29, 2001; PDF

Remarks on the degenerate Radon transform in $\mathbf {R}^{2}$: Sang Hyuk Lee; Proc. Amer. Math. Soc. 129 (2001), 3373-3378; DOI: https://doi.org/10.1090/S0002-9939-01-05956-1; Published electronically: April 25, 2001; PDF

Non-tangential limits, fine limits and the Dirichlet integral: Stephen J. Gardiner; Proc. Amer. Math. Soc. 129 (2001), 3379-3387; DOI: https://doi.org/10.1090/S0002-9939-01-05952-4; Published electronically: April 25, 2001; PDF

Unbounded convex mappings of the ball in $\mathbb {C}^n$: Jerry R. Muir Jr. and Ted J. Suffridge; Proc. Amer. Math. Soc. 129 (2001), 3389-3393; DOI: https://doi.org/10.1090/S0002-9939-01-05967-6; Published electronically: April 24, 2001; PDF

A generalization of Bendixson’s criterion: Michal Fečkan; Proc. Amer. Math. Soc. 129 (2001), 3395-3399; DOI: https://doi.org/10.1090/S0002-9939-01-06107-X; Published electronically: April 25, 2001; PDF

Minimal sufficiency of order statistics in convex models: Lutz Mattner; Proc. Amer. Math. Soc. 129 (2001), 3401-3411; DOI: https://doi.org/10.1090/S0002-9939-01-06006-3; Published electronically: May 10, 2001; PDF

On uniform properties of doubling measures: Michael Ruzhansky; Proc. Amer. Math. Soc. 129 (2001), 3413-3416; DOI: https://doi.org/10.1090/S0002-9939-01-05931-7; Published electronically: May 3, 2001; PDF

Incompressible surfaces in link complements: Ying-Qing Wu; Proc. Amer. Math. Soc. 129 (2001), 3417-3423; DOI: https://doi.org/10.1090/S0002-9939-01-05938-X; Published electronically: April 2, 2001; PDF

Volume growth and parabolicity: Ilkka Holopainen and Pekka Koskela; Proc. Amer. Math. Soc. 129 (2001), 3425-3435; DOI: https://doi.org/10.1090/S0002-9939-01-05954-8; Published electronically: April 24, 2001; PDF

On fillable contact structures up to homotopy: Paolo Lisca; Proc. Amer. Math. Soc. 129 (2001), 3437-3444; DOI: https://doi.org/10.1090/S0002-9939-01-05964-0; Published electronically: April 24, 2001; PDF

Variationally complete representations are polar: Antonio J. Di Scala and Carlos Olmos; Proc. Amer. Math. Soc. 129 (2001), 3445-3446; DOI: https://doi.org/10.1090/S0002-9939-01-06226-8; Published electronically: May 30, 2001; PDF