Proceedings of the American Mathematical Society

Contents of Volume 109, Number 3
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The Diophantine equation $f(x)=g(y)$

Todd Cochrane

Proc. Amer. Math. Soc. 109 (1990), 573-577

DOI: https://doi.org/10.1090/S0002-9939-1990-1019271-X

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Two families of stable bundles with the same spectrum

A. P. Rao

Proc. Amer. Math. Soc. 109 (1990), 579-584

DOI: https://doi.org/10.1090/S0002-9939-1990-1019280-0

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Growth functions for residually torsion-free nilpotent groups

Roger C. Alperin and Brian L. Peterson

Proc. Amer. Math. Soc. 109 (1990), 585-587

DOI: https://doi.org/10.1090/S0002-9939-1990-1017843-X

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On theta pairs for a maximal subgroup

N. P. Mukherjee and Prabir Bhattacharya

Proc. Amer. Math. Soc. 109 (1990), 589-596

DOI: https://doi.org/10.1090/S0002-9939-1990-1015683-9

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Evaluation of the infinite series $\sum ^ \infty _ {n=1,(\frac np)=1}(\frac np)_ 4{}n^ {-1}$

Kenneth Hardy and Kenneth S. Williams

Proc. Amer. Math. Soc. 109 (1990), 597-603

DOI: https://doi.org/10.1090/S0002-9939-1990-1019275-7

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Priestley spaces

P. Venugopalan

Proc. Amer. Math. Soc. 109 (1990), 605-610

DOI: https://doi.org/10.1090/S0002-9939-1990-1013985-3

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The relative form of Gersten’s conjecture for power series over a complete discrete valuation ring

L. Reid and C. Sherman

Proc. Amer. Math. Soc. 109 (1990), 611-613

DOI: https://doi.org/10.1090/S0002-9939-1990-1013980-4

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Unique subwords in nonperiodic words

C. M. Weinbaum

Proc. Amer. Math. Soc. 109 (1990), 615-619

DOI: https://doi.org/10.1090/S0002-9939-1990-1017852-0

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On modular extensions

Shizuka Sato

Proc. Amer. Math. Soc. 109 (1990), 621-626

DOI: https://doi.org/10.1090/S0002-9939-1990-1019282-4

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Nodal quintic threefolds and nodal octic surfaces

Ciprian Borcea

Proc. Amer. Math. Soc. 109 (1990), 627-635

DOI: https://doi.org/10.1090/S0002-9939-1990-1021895-0

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$t$-linked overrings as intersections of localizations

David E. Dobbs, Evan G. Houston, Thomas G. Lucas and Muhammad Zafrullah

Proc. Amer. Math. Soc. 109 (1990), 637-646

DOI: https://doi.org/10.1090/S0002-9939-1990-1017000-7

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Hall subgroup normalizers and character correspondences in $M$-groups

I. M. Isaacs

Proc. Amer. Math. Soc. 109 (1990), 647-651

DOI: https://doi.org/10.1090/S0002-9939-1990-1017004-4

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Periodic solutions for nonlinear evolution equations in a Banach space

Ioan I. Vrabie

Proc. Amer. Math. Soc. 109 (1990), 653-661

DOI: https://doi.org/10.1090/S0002-9939-1990-1015686-4

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The converse of the Minkowski’s inequality theorem and its generalization

Janusz Matkowski

Proc. Amer. Math. Soc. 109 (1990), 663-675

DOI: https://doi.org/10.1090/S0002-9939-1990-1009994-0

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Weak convergence and weak compactness for multifunctions with values in a separable Banach space

Nikolaos S. Papageorgiou

Proc. Amer. Math. Soc. 109 (1990), 677-687

DOI: https://doi.org/10.1090/S0002-9939-1990-1013978-6

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The Haagerup type cross norm on $C^ *$-algebras

Takashi Itoh

Proc. Amer. Math. Soc. 109 (1990), 689-695

DOI: https://doi.org/10.1090/S0002-9939-1990-1014645-5

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The operator inequality $P\leq A^ *PA$

B. P. Duggal

Proc. Amer. Math. Soc. 109 (1990), 697-698

DOI: https://doi.org/10.1090/S0002-9939-1990-1007495-7

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Topological rationalization of a class of meromorphic functions

A. Meziani

Proc. Amer. Math. Soc. 109 (1990), 699-707

DOI: https://doi.org/10.1090/S0002-9939-1990-1017005-6

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Commutativity in operator algebras

David P. Blecher

Proc. Amer. Math. Soc. 109 (1990), 709-715

DOI: https://doi.org/10.1090/S0002-9939-1990-1009985-X

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A property of purely infinite simple $C^ *$-algebras

Shuang Zhang

Proc. Amer. Math. Soc. 109 (1990), 717-720

DOI: https://doi.org/10.1090/S0002-9939-1990-1010004-X

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Hilbert-Schmidt Hankel operators on the Bergman space

Ke He Zhu

Proc. Amer. Math. Soc. 109 (1990), 721-730

DOI: https://doi.org/10.1090/S0002-9939-1990-1013987-7

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An extreme absolutely continuous $\textrm {RP}$-measure

John N. McDonald

Proc. Amer. Math. Soc. 109 (1990), 731-738

DOI: https://doi.org/10.1090/S0002-9939-1990-1017849-0

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Descriptions of nest algebras

M. Anoussis and E. G. Katsoulis

Proc. Amer. Math. Soc. 109 (1990), 739-745

DOI: https://doi.org/10.1090/S0002-9939-1990-1009984-8

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When does $\textrm {ca}(\Sigma ,X)$ contain a copy of $l_ \infty$ or $c_ 0$?

Lech Drewnowski

Proc. Amer. Math. Soc. 109 (1990), 747-752

DOI: https://doi.org/10.1090/S0002-9939-1990-1012927-4

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Spectral pictures of hyponormal bilateral operator weighted shifts

Domingo A. Herrero

Proc. Amer. Math. Soc. 109 (1990), 753-763

DOI: https://doi.org/10.1090/S0002-9939-1990-1014644-3

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Geometric finiteness of certain Kleinian groups

G. P. Scott and G. A. Swarup

Proc. Amer. Math. Soc. 109 (1990), 765-768

DOI: https://doi.org/10.1090/S0002-9939-1990-1013981-6

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Nonoscillatory solutions of second order differential equations with integrable coefficients

Manabu Naito

Proc. Amer. Math. Soc. 109 (1990), 769-774

DOI: https://doi.org/10.1090/S0002-9939-1990-1019278-2

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Hypercompletions of Riesz spaces

Wolfgang Filter

Proc. Amer. Math. Soc. 109 (1990), 775-780

DOI: https://doi.org/10.1090/S0002-9939-1990-1021210-2

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Stable rank of subalgebras of the ball algebras

Rudolf Rupp

Proc. Amer. Math. Soc. 109 (1990), 781-786

DOI: https://doi.org/10.1090/S0002-9939-1990-1019754-2

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Lower bounds for the extrinsic total curvatures of a space-like codimension $2$ surface in Minkowski space

Marek Kossowski

Proc. Amer. Math. Soc. 109 (1990), 787-795

DOI: https://doi.org/10.1090/S0002-9939-1990-1013972-5

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Minimal shell of a typical convex body

Andreana Zucco

Proc. Amer. Math. Soc. 109 (1990), 797-802

DOI: https://doi.org/10.1090/S0002-9939-1990-1015687-6

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Multiplier groups of planar difference sets and a theorem of Kantor

Chat Yin Ho and Alexander Pott

Proc. Amer. Math. Soc. 109 (1990), 803-808

DOI: https://doi.org/10.1090/S0002-9939-1990-1017847-7

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Lifting theorems in nonstandard measure theory

David Ross

Proc. Amer. Math. Soc. 109 (1990), 809-822

DOI: https://doi.org/10.1090/S0002-9939-1990-1019753-0

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A stable/unstable “manifold” theorem for area preserving homeomorphisms of two manifolds

Stewart Baldwin and Edward E. Slaminka

Proc. Amer. Math. Soc. 109 (1990), 823-828

DOI: https://doi.org/10.1090/S0002-9939-1990-1013963-4

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Subdominant ultrametrics

José M. Bayod and J. Martínez-Maurica

Proc. Amer. Math. Soc. 109 (1990), 829-834

DOI: https://doi.org/10.1090/S0002-9939-1990-1015676-1

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A construction of a Dowker space

Stephen Watson

Proc. Amer. Math. Soc. 109 (1990), 835-841

DOI: https://doi.org/10.1090/S0002-9939-1990-1019285-X

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Eigenvalue comparison for tubular domains

Jeffrey M. Lee

Proc. Amer. Math. Soc. 109 (1990), 843-848

DOI: https://doi.org/10.1090/S0002-9939-1990-1021900-1

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Centralizers of immersions of the circle

Carlos Arteaga

Proc. Amer. Math. Soc. 109 (1990), 849-853

DOI: https://doi.org/10.1090/S0002-9939-1990-1013962-2

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A note on Weinstein’s conjecture

Augustin Banyaga

Proc. Amer. Math. Soc. 109 (1990), 855-858

DOI: https://doi.org/10.1090/S0002-9939-1990-1021206-0

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