CONTENTS
Factorization in Monoid Domains . . . 1853 H. Kirn
Commutative Alternative Rings: A Construction . . . 1871 E. G. Goodaire and D. A. Robinson
Vanishing of (Co)Homology over Commutative Rings . . . 1883 D. A. Jorgensen
Isotype Subgroups of Local Warfield Groups . . . 1899 P. Hill andW. Ullery
Chain Conditions on Quotient Finite Dimensional Modules . . . 1909 T. Albu and S. T. Rizvi
Brill-Noether Theory of Curves with Ak Singularities and
Hyperplane Sections of K3 S u r f a c e s . . . 1929 E. Ballico
Embedding Weak 2-Cocycle Crossed Products into Matrix
Rings . . . 1939 G. F. Seelinger
On a Question of W. L. May Concerning the Isomorphism of
Modular Group Algebras . . . 1953 P. Danchev
Cleft Extensions for a Class of Pointed Hopf Algebras
Constructed by Ore Extensions . . . 1959 A. Nenciu
Subgroups of Finite Index and the/c-Localization . . . 1983 A. Rosenmann
Quotient Principal Factors of an Ordered Semigroup . . . 1993 Y.Cao
Some Remarks on Richman Simple Extensions of an Integral
D o m a i n . . . 2013 N. Onoda, T. Sugatani, and K. Yoshida
vi CONTENTS Multiplicatively Closed Sets of Ideals and Residual Division . . . 2021 A. Mirbagheri and L. J. Ratliff, Jr.
n-Injective and n-FIat Modules . . . 2039 A. Shamsuddin
Differentials of the Family Y2- X3 - t X2 . . . 2051 R. I. Michler
Rings Which Are Sums of Two Subrings Satisfying Polynomial
Identities . . . 2059 M. Kfpczyk and E. R. Puczylowski
Simple Modules over the High Rank Virasoro Algebras . . . 2067 Y.Su
Central Automorphisms That Are Almost Inner. . . . 2081 M. J. Curran and D. J. McCaughan
On Ordered Monoid Rings over a Quasi-Baer Ring . . . 2089 Y. Hirano
Annihilator Conditions on Polynomials . . . 2097 G. F. Birkenmeier and F. Huang
On 2-Primal Ore Extensions . . . 2113 G. Marks
Fusion Rules for the Hamming Code Vertex Operator Algebra . . . 2125 C. H. Lam
Smallest Degrees of Representations of Exceptional Groups
of Lie Type . . . 2147 F. Liibeck
On Semireal Closed Rings . . . 2171 G.Zeng
On theJacobson Radical of Graded Rings . . . 2185 E. Jespers, A. V. Kelarev, and J. Okninski
On c-Normal Maximal and Minimal Subgroups of Sylow
Subgroups of Finite G r o u p s . . . 2193 H. Wei
Some Structural Properties of the Topological Ring of
Colombeau's Generalized Numbers . . . 2201 J. Aragona and S. 0. Juriaans
CONTENTS
Free Subgroups in the Group of Units of a Twisted Group
Algebra . . . 2231 J. Z. Convolves and A. Mandel
On Generalized Hypercenter of a Finite Group . . . 2239 M. Asaad and M. E. Mohamed
Quadratic Lie Algebras and Commutative Associative Algebras . . . 2249 L. Zhu and D. Meng
Hochschild Cohomology and Fundamental Groups of Incidence
A l g e b r a s . . . 2269 M. A. Gatica and M. J. Redondo
Derived Lengths of Solvable Groups Satisfying the One-Prime
Hypothesis. II . . . 2285 /. M. Isaacs and M. L. Lewis
A Characterization of Unit Regular Rings . . . 2293 V. P. Camilla and D. Khurana
