COMMUNICATIONS IN ALGEBRA®
Volume 32, Number 4, 2004
CONTENTS
An Algorithm for Commutative Semigroup Algebras Which Are
Principal Ideal Rings 1237 /. M. Araujo, A. V. Kelarev, and A. Solomon
Locally Artinian Serial Rings 1255 J. A. Firkins
On the Tensor Product of the Reflection Representation of GLn(Wq) 1265 N. Sanat
On Rigid Minimal Presentations 1277 R. Bautista and R. Zuazua
On a Field-Theoretic Invariant for Extensions of Commutative Rings 1295 D. E. Dobbs and B. Mullins
On Shod Extensions of Algebras 1307 F. U. Coelho and A. M. P. D. Savioli
Flat Covers and Flat Representations of Quivers 1319 E. Enochs, L. Oyonarte, and B. Torrecillas
Maximal 2-Local Geometries for the Symmetric Groups 1339 P. Rowley and T. Saninta
Quasi-decompositions for Self-Small Abelian Groups 1373 S. Breaz
Binomial Rings 1385 J. K. Sklar
Quasitriangular Structures for a Class of Hopf Algebras of
Dimension p6 1401
S. Wang and Y. G. Kim
The Waring Locus of Binary Forms 1425 J. V. Chipalkatti
Hilbert Coefficients and Depths of Form Rings 1445 A. V. Jayanthan, B. Singh, and J. K. Verma
Q-Gorenstein Projective and Flat Covers and Q-Gorenstein Injective
Envelopes 1453 E. E. Enochs and O. M. G. Jenda
(continued on inside back cover)
COMMUNICATIONS IN ALGEBRA®, 32(4), 2004
Contents Continued
Soluble Groups of Small Wielandt Length 1471 C. J. T. Wetherell
On the Solvability of Equations Over Groups 1487 A. Juhasz
Flat Covers in the Category of Quasi-coherent Sheaves Over the
Projective Line 1497 E. Enochs, S. Estrada, J. R. Garcia Rozas, and L. Oyonarte
A Construction of Unit-Regular Rings Which Satisfy (DF) 1509 M. Kutami
Cuspidal Modules as Summands of a Gel'fand-Graev Module 1519 /. Tulunav
On Monomial Characters and Central Idempotents of Rational
Group Algebras 1531 A. Olivieri, A. del Rio, and J. J. Simon
Semigroups of Transformations Commuting with Injective Nilpotents 1551 J. Konieczny
On Hall Algebras of Hereditary Orders 1571 O. lyama
Differential Criterion of Complete Regular Local Rings 1581 M. Furuya and H. Niitsuma
Splitting Mixed Groups of Finite Torsion-Free Rank 1587 T. Okuvama
On Good Filtration Dimensions for Standardly Stratified Algebras 1603 B. Zhu and S. Caenepeel
Finite Dimensional Simple Algebras That Do Not Admit a Lattice
Order 1615 J. Ma
Theory of Polynomial Near-Rings 1619 E. K. S. Lee
An Algorithm for Computing the Singularity of the Generic Germ
of a Pencil of Plane Curves 1637 M. Alberich-Carramihana
Corrigendum 1647
