Proceedings of the American Mathematical Society

Contents of Volume 81, Number 3
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Rings with every proper image a principal ideal ring

P. F. Smith

Proc. Amer. Math. Soc. 81 (1981), 347-352

DOI: https://doi.org/10.1090/S0002-9939-1981-0597637-4

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Two conjectures in the theory of Poincaré duality groups

F. E. A. Johnson

Proc. Amer. Math. Soc. 81 (1981), 353-354

DOI: https://doi.org/10.1090/S0002-9939-1981-0597638-6

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Finite transferable lattices are sharply transferable

C. R. Platt

Proc. Amer. Math. Soc. 81 (1981), 355-358

DOI: https://doi.org/10.1090/S0002-9939-1981-0597639-8

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Spectra of operators with fixed imaginary parts

Andrzej Pokrzywa

Proc. Amer. Math. Soc. 81 (1981), 359-364

DOI: https://doi.org/10.1090/S0002-9939-1981-0597640-4

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On standard subgroups of type $^{2}E_{6}(2)$

G. Stroth

Proc. Amer. Math. Soc. 81 (1981), 365-368

DOI: https://doi.org/10.1090/S0002-9939-1981-0597641-6

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Locally finite-dimensional algebras

Daniel R. Farkas and Robert L. Snider

Proc. Amer. Math. Soc. 81 (1981), 369-372

DOI: https://doi.org/10.1090/S0002-9939-1981-0597642-8

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Calculating invariants of inseparable field extensions

James K. Deveney and John N. Mordeson

Proc. Amer. Math. Soc. 81 (1981), 373-376

DOI: https://doi.org/10.1090/S0002-9939-1981-0597643-X

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Homological independence of injective hulls of simple modules over certain noncommutative rings

Jonathan S. Golan

Proc. Amer. Math. Soc. 81 (1981), 377-381

DOI: https://doi.org/10.1090/S0002-9939-1981-0597644-1

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Finitely generated non-Hopfian groups

A. H. Rhemtulla

Proc. Amer. Math. Soc. 81 (1981), 382-384

DOI: https://doi.org/10.1090/S0002-9939-1981-0597645-3

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The Brauer group is torsion

David J. Saltman

Proc. Amer. Math. Soc. 81 (1981), 385-387

DOI: https://doi.org/10.1090/S0002-9939-1981-0597646-5

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Unified treatment of some inequalities among ratios of means

Emad El-Neweihi and Frank Proschan

Proc. Amer. Math. Soc. 81 (1981), 388-390

DOI: https://doi.org/10.1090/S0002-9939-1981-0597647-7

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A note on singular integrals with weights

Douglas S. Kurtz and Richard L. Wheeden

Proc. Amer. Math. Soc. 81 (1981), 391-397

DOI: https://doi.org/10.1090/S0002-9939-1981-0597648-9

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The structure of $\omega$-limit sets of nonexpansive maps

Stephen F. Roehrig and Robert C. Sine

Proc. Amer. Math. Soc. 81 (1981), 398-400

DOI: https://doi.org/10.1090/S0002-9939-1981-0597649-0

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Beyond the minimax principle

Chandler Davis

Proc. Amer. Math. Soc. 81 (1981), 401-405

DOI: https://doi.org/10.1090/S0002-9939-1981-0597650-7

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On near derivations

Gyula Maksa

Proc. Amer. Math. Soc. 81 (1981), 406-408

DOI: https://doi.org/10.1090/S0002-9939-1981-0597651-9

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The similarity problem for representations of $C^{\ast }$-algebras

John W. Bunce

Proc. Amer. Math. Soc. 81 (1981), 409-414

DOI: https://doi.org/10.1090/S0002-9939-1981-0597652-0

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Asymptotic conditions for periodic solutions of ordinary differential equations

James R. Ward

Proc. Amer. Math. Soc. 81 (1981), 415-420

DOI: https://doi.org/10.1090/S0002-9939-1981-0597653-2

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A uniqueness criterion for ordinary differential equations in Banach spaces

M. Arrate

Proc. Amer. Math. Soc. 81 (1981), 421-424

DOI: https://doi.org/10.1090/S0002-9939-1981-0597654-4

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New support points of $\mathcal {S}$ and extreme points of $\mathcal {HS}$

Kent Pearce

Proc. Amer. Math. Soc. 81 (1981), 425-428

DOI: https://doi.org/10.1090/S0002-9939-1981-0597655-6

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Holomorphic maps that extend to automorphisms of a ball

Walter Rudin

Proc. Amer. Math. Soc. 81 (1981), 429-432

DOI: https://doi.org/10.1090/S0002-9939-1981-0597656-8

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Convergence of $L_{p}$ approximations as $p\rightarrow \infty$

Richard B. Darst

Proc. Amer. Math. Soc. 81 (1981), 433-436

DOI: https://doi.org/10.1090/S0002-9939-1981-0597657-X

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Total stability for neutral functional differential equations

A. F. Izé and A. A. Freiria

Proc. Amer. Math. Soc. 81 (1981), 437-442

DOI: https://doi.org/10.1090/S0002-9939-1981-0597658-1

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Not every $d$-symmetric operator is GCR

C. Ray Rosentrater

Proc. Amer. Math. Soc. 81 (1981), 443-446

DOI: https://doi.org/10.1090/S0002-9939-1981-0597659-3

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Characterization of totally umbilical hypersurfaces

Thomas Hasanis

Proc. Amer. Math. Soc. 81 (1981), 447-450

DOI: https://doi.org/10.1090/S0002-9939-1981-0597660-X

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An integral formula on the scalar curvature of algebraic manifolds

Jih Hsin Cheng

Proc. Amer. Math. Soc. 81 (1981), 451-454

DOI: https://doi.org/10.1090/S0002-9939-1981-0597661-1

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Egoroff’s theorem and the distribution of standard points in a nonstandard model

C. Ward Henson and Frank Wattenberg

Proc. Amer. Math. Soc. 81 (1981), 455-461

DOI: https://doi.org/10.1090/S0002-9939-1981-0597662-3

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Compatible relations of modular and orthomodular lattices

Dietmar Schweigert

Proc. Amer. Math. Soc. 81 (1981), 462-464

DOI: https://doi.org/10.1090/S0002-9939-1981-0597663-5

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Speed-up by theories with infinite models

R. Statman

Proc. Amer. Math. Soc. 81 (1981), 465-469

DOI: https://doi.org/10.1090/S0002-9939-1981-0597664-7

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On the iterated logarithm law for local time

Edwin Perkins

Proc. Amer. Math. Soc. 81 (1981), 470-472

DOI: https://doi.org/10.1090/S0002-9939-1981-0597665-9

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Extending the concept of genus to dimension $n$

Carlo Gagliardi

Proc. Amer. Math. Soc. 81 (1981), 473-481

DOI: https://doi.org/10.1090/S0002-9939-1981-0597666-0

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Inductive dimension and inverse sequences of compact spaces

M. G. Charalambous

Proc. Amer. Math. Soc. 81 (1981), 482-484

DOI: https://doi.org/10.1090/S0002-9939-1981-0597667-2

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On the homotopy and cohomology of the classifying space of Riemannian foliations

Steven Hurder

Proc. Amer. Math. Soc. 81 (1981), 485-489

DOI: https://doi.org/10.1090/S0002-9939-1981-0597668-4

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Approximation of continuous functions on pseudocompact spaces

C. E. Aull

Proc. Amer. Math. Soc. 81 (1981), 490-494

DOI: https://doi.org/10.1090/S0002-9939-1981-0597669-6

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A generalized Poincaré stability criterion

Carmen Chicone and R. C. Swanson

Proc. Amer. Math. Soc. 81 (1981), 495-500

DOI: https://doi.org/10.1090/S0002-9939-1981-0597670-2

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Knots with Heegaard genus $2$ complements are invertible

Richard P. Osborne

Proc. Amer. Math. Soc. 81 (1981), 501-502

DOI: https://doi.org/10.1090/S0002-9939-1981-0597671-4

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$\beta \omega -\omega$ is not first order homogeneous

Eric K. van Douwen and Jan van Mill

Proc. Amer. Math. Soc. 81 (1981), 503-504

DOI: https://doi.org/10.1090/S0002-9939-1981-0597672-6

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