COMMUNICATIONS IN ALGEBRA Volume 28, Number 8,2000
CONTENTS
Two-Sided Networks for Completely Simple Semigroups... 3535 M. Petrich
R u < E - i { S ) . . . 3555 P. B. Kleidman, U. Meierfrankenfeld, and A. J. E. Ryba
Strongly Quasi-Frobenius Rings . . . 3585 M. Hoshino
Quasi-serial Components of Strictly Wild Algebras... 3601 H. Nagase
The Semigroup of Values of a One-Dimensional Local Ring
with Two Minimal P r i m e s . . . 3607 V. Barucci, M. D'Anna, andR. Froberg
Semigroups of Order-Preserving M a p p i n g s . . . 3635 V. B. Repnitskii and A. S. Vemitskii
Universal Homogeneous Derivations of Graded e-Commutative
A l g e b r a s . . . 3643 0. A. Sdnchez-Valenzuela and C. Victoria-Monge
Collapsing Groups and Positive Laws . . . 3661 0. Macedonska
Newton Polytopes of Constants of Locally Nilpotent Derivations... 3667 0. Hadas andL. Makar-Limanov
Semigroups of Linear Endomorphisms Closed Under
C o n j u g a t i o n . . . 3679 J. Araujo andF. C. Silva
The Signatures of the Congruence Subgroups Gy(t) of the Hecke
Groups G, and (7( . . . 3691 M.-L. Long
Harada M o d u l e s . . . 3703 M. Jayaraman and N. Vanaja
viii CONTENTS A Complex Version of the Baer-Krull Theorems . . . 3727 M. J. de la Puente
A Note on the Decomposition of the Exterior Algebra of the
Adjoint Representation . . . 3739 M. J. Logon
On Herstein's Constructions Relating Jordan and Associative
S u p e r a l g e b r a s . . . 3743 C. Gomez-Ambrosi and F. Montaner
Orderings and Valuations on Twisted Polynomial Rings . . . 3763 M. Marshall and Y. Zhang
A Note on Skew Differential Operators on Commutative Rings... 3777 V. Hirano, K. Nasu, andK. Tsuda
Pseudovaluation Domains with Vapnik-Chervonenkis Classes of
Definable S e t s . . . 3785 L. Belair
Semiprime Ore E x t e n s i o n s . . . 3795 J. Han, Y. Hirano, andH. Kirn
Mixed Multiplicities of Arbitrary Ideals in Local Rings . . . 3803 D. Q. Viet
Covering M o r p h i s m s . . . 3823 E. E. Enochs, J. R. Garcia Rozas, and L. Oyonarte
Endomorphism Rings and the Category of Finitely Generated
Projective Modules . . . 3837 J. L. Garcia, J. Martinez Herndndez, and P. L. Gomez Sdnchez
Evaluation of Kloosterman and Salie Sums for Arbitrary
Number F i e l d s . . . 3853 /. Pacharoni
Metacyclic G r o u p s . . . 3865 C. E. Hempel
Vector Bundles on Fano 3-Folds Without Intermediate
C o h o m o l o g y . . . 3899 E. Arrondo and L. Costa
On Stable Range C o n d i t i o n s . . . 3913 H. Chen
CONTENTS ix On Functional Identities and (/-Free Subsets of Rings. I . . . 3925 K. I. BeidarandM. A. Chebotar
On Functional Identities and rf-Free Subsets of Rings. I I . . . 3953 K. I. BeidarandM. A. Chebotar
A Counterexample to the CA(G)-Conjecture ... 3973 P. A. Minh
Associated Primes in Commutative Polynomial R i n g s . . . 3983 C. Faith
The Locally Solvable Radical of Torsion Groups ... 3987 Z. Zhang and W. Yang
Tree Algebras with Non-negative Tits Form . . . 3993 P. Draxler andJ. A. de la Pena
