Contents of Volume 112, Number 3

All articles in this issue are freely accessible.

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What makes $Tor^{R}_{1}(R/I,I)$ free?

Shiro Goto and Naoyoshi Suzuki.
Proc. Amer. Math. Soc. 112 (1991), 605-611
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MathSciNet review: 1052871

Integral domains with finitely generated groups of divisibility

D. D. Anderson.
Proc. Amer. Math. Soc. 112 (1991), 613-618
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MathSciNet review: 1055765

Algebras of finite self-injective dimension

Mitsuo Hoshino.
Proc. Amer. Math. Soc. 112 (1991), 619-622
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MathSciNet review: 1047011

$𝜔!$ can be a nontrivial automorphism group

Judith Roitman.
Proc. Amer. Math. Soc. 112 (1991), 623-628
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MathSciNet review: 1059636

On the compositum of two power series rings

Shreeram S. Abhyankar, William Heinzer and Sylvia Wiegand.
Proc. Amer. Math. Soc. 112 (1991), 629-636
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MathSciNet review: 1057740

Embedding Galois problems and reduced norms

Teresa Crespo.
Proc. Amer. Math. Soc. 112 (1991), 637-639
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MathSciNet review: 1057951

Auslander-Reiten triangles in derived categories of finite-dimensional algebras

Dieter Happel.
Proc. Amer. Math. Soc. 112 (1991), 641-648
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MathSciNet review: 1045137

The group determinant determines the group

Edward Formanek and David Sibley.
Proc. Amer. Math. Soc. 112 (1991), 649-656
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MathSciNet review: 1062831

Finitely embedded commutative rings

Carl Faith.
Proc. Amer. Math. Soc. 112 (1991), 657-659
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MathSciNet review: 1057942

Comaximizable primes

Raymond C. Heitmann and Stephen McAdam.
Proc. Amer. Math. Soc. 112 (1991), 661-669
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MathSciNet review: 1049136

On small Iwasawa invariants and imaginary quadratic fields

Jonathan W. Sands.
Proc. Amer. Math. Soc. 112 (1991), 671-684
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MathSciNet review: 1057961

Henselian rings and Weierstrass polynomials

Budh Nashier.
Proc. Amer. Math. Soc. 112 (1991), 685-690
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MathSciNet review: 1057944

Automorphisms of $SL_{2}$ of imaginary quadratic integers

John Smillie and Karen Vogtmann.
Proc. Amer. Math. Soc. 112 (1991), 691-699
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MathSciNet review: 1065094

Some operator-theoretic calculus for positive definite kernels

Ameer Athavale.
Proc. Amer. Math. Soc. 112 (1991), 701-708
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MathSciNet review: 1068114

An $n×n$ matrix of linear maps of a $C^{*}$-algebra

Ching Yun Suen.
Proc. Amer. Math. Soc. 112 (1991), 709-712
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MathSciNet review: 1069296

Lower estimate in Littlewood’s conjecture on the mean spherical derivative of a polynomial and iteration theory

A. È. Erëmenko.
Proc. Amer. Math. Soc. 112 (1991), 713-715
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MathSciNet review: 1065943

Exceptional $q$-Askey-Wilson polynomials and continued fractions

Dharma P. Gupta and David R. Masson.
Proc. Amer. Math. Soc. 112 (1991), 717-727
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MathSciNet review: 1059625

The stability of certain functional equations

John A. Baker.
Proc. Amer. Math. Soc. 112 (1991), 729-732
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MathSciNet review: 1052568

The stable rank of crossed products of sectional $C^{*}$-algebras by compact Lie groups

Eckart Schulz.
Proc. Amer. Math. Soc. 112 (1991), 733-744
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MathSciNet review: 1042272

Principal distributions for almost unperturbed Schrödinger pairs of operators

Daoxing Xia.
Proc. Amer. Math. Soc. 112 (1991), 745-754
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MathSciNet review: 1042275

Some trace formulas for almost unperturbed Schrödinger pairs of operators

Daoxing Xia.
Proc. Amer. Math. Soc. 112 (1991), 755-764
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MathSciNet review: 1042276

A hypercyclic operator whose adjoint is also hypercyclic

Héctor Salas.
Proc. Amer. Math. Soc. 112 (1991), 765-770
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MathSciNet review: 1049848

Carleson measures in Hardy and weighted Bergman spaces of polydiscs

F. Jafari.
Proc. Amer. Math. Soc. 112 (1991), 771-781
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MathSciNet review: 1039533

Counterexamples concerning bitriangular operators

M. S. Lambrou and W. E. Longstaff.
Proc. Amer. Math. Soc. 112 (1991), 783-787
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MathSciNet review: 1052576

Estimates for inverses of $e^{int}$ in some quotient algebras of $A^{+}$

Elhassan Zerouali.
Proc. Amer. Math. Soc. 112 (1991), 789-793
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MathSciNet review: 1037228

On infinitely differentiable and Gevrey vectors for representation

A. F. M. ter Elst.
Proc. Amer. Math. Soc. 112 (1991), 795-802
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MathSciNet review: 1045134

A note on a global stability theorem of M. W. Hirsch

Ji Fa Jiang.
Proc. Amer. Math. Soc. 112 (1991), 803-806
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MathSciNet review: 1043411

Sums of powers of derivatives

Jan Mařík and Clifford E. Weil.
Proc. Amer. Math. Soc. 112 (1991), 807-817
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MathSciNet review: 1042268

Boundaries and modular ideals on locally compact groups

William Moran and George A. Willis.
Proc. Amer. Math. Soc. 112 (1991), 819-827
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MathSciNet review: 1033960

Bernstein-type inequalities for the derivatives of constrained polynomials

Tamás Erdélyi.
Proc. Amer. Math. Soc. 112 (1991), 829-838
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MathSciNet review: 1036985

Explicit construction of universal operator algebras and applications to polynomial factorization

David P. Blecher and Vern I. Paulsen.
Proc. Amer. Math. Soc. 112 (1991), 839-850
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MathSciNet review: 1049839

Mean growth of Bloch functions and Makarov’s law of the iterated logarithm

Rodrigo Bañuelos and Charles N. Moore.
Proc. Amer. Math. Soc. 112 (1991), 851-854
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MathSciNet review: 1057948

The spectral extension property and extension of multiplicative linear functionals

Michael J. Meyer.
Proc. Amer. Math. Soc. 112 (1991), 855-861
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MathSciNet review: 1052578

Pseudospectral operators and the pointwise ergodic theorem

R. E. Bradley.
Proc. Amer. Math. Soc. 112 (1991), 863-870
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MathSciNet review: 1050017

Simple $C^{*}$-algebras with continuous scales and simple corona algebras

Hua Xin Lin.
Proc. Amer. Math. Soc. 112 (1991), 871-880
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MathSciNet review: 1079711

A fixed point approach to homological perturbation theory

Donald W. Barnes and Larry A. Lambe.
Proc. Amer. Math. Soc. 112 (1991), 881-892
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MathSciNet review: 1057939

Spread and local properties

Basil Coutant.
Proc. Amer. Math. Soc. 112 (1991), 893-898
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MathSciNet review: 1045132

Permutation groups in Euclidean Ramsey theory

Igor Kříž.
Proc. Amer. Math. Soc. 112 (1991), 899-907
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MathSciNet review: 1065087

The derivative of the exponential map

Carl Herz.
Proc. Amer. Math. Soc. 112 (1991), 909-911
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MathSciNet review: 1086328

A correction to: “On extensions of models of strong fragments of arithmetic” [Proc. Amer. Math. Soc. 108 (1990), no. 1, 223–232; MR0984802 (90d:03123)]

Roman Kossak.
Proc. Amer. Math. Soc. 112 (1991), 913-914
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MathSciNet review: 1049844