COMMUNICATIONS IN ALGEBRA®
Volume 36, Number 2, 2008
CONTENTS
Lie Derived Lengths of Group Algebras of Groups
with Cyclic Derived Subgroup 315 Z. Balogh and T. Juhasz
Classification of Rings with Genus
One Zero-Divisor Graphs 325 C. Wickham
Strong Cleanness of Matrix Rings
Over Commutative Rings 346 F. Couchot
Images and Open Subspaces of SV Spaces 352 S. Larson
Minimal Blocking Sets in PG(n, 2) and
Covering Groups by Subgroups 365 A. Abdollahi, M. J. Ataei, and A. M. Hassanabadi
On the First Galois Cohomology Group
of the Algebraic Group (D) 381 R. Hazrat
On Hochschild Extensions of Reduced and Clean Rings 388 H. Lin and C. Xi
Lifting Modules with Indecomposable Decompositions 395 N. Er and N. O. Ertas
Generalizations of Strassen's Equations for Secant
Varieties of Segre Varieties 405 J. M. Landsberg and L. Manivel
-M-Small and -Harada Modules 423 M. T. Kosan and A. Q. Ozcan
Topological Abelian Groups and Equivariant Homology 434 M. A. Aguilar and C. Prieto
The Inductive McKay Condition for Simple
Groups Not of Lie Type 455 G. Malle
(Continued)
Contents
A Note on Cohen-Macaulayness of Stanley-Reisner
Rings with Serre's Condition (S2) 464 N. Terai and K.-i. Yoshida
On Strongly Associative Group Algebras 478 J. G. Lopes
Noetherian Algebras of Finite Self-lnjective Dimension 493 H.Abe
Ore Extensions of Skew Armendariz Rings 508 A. R. Nasr-lsfahani and A. Moussavi
A New Characterization of A10 by
its Noncommuting Graph 523 L. Wang, and W. Shi
-Extending Modules, -Lifting Modules,
and Proper Classes 529 S. Crivei
Approximation Presentations of Modules
and Homological Conjectures 546 Z. Huang
On Strongly Essential Submodules 564 M. Ghirati and O. A. S. Karamzadeh
The Integral Chow Ring of the Stack of at Most
1-Nodal Rational Curves 581 D. Edidin and D. Fulghesu
On the Blocks of the Centralizer of the G-Fixed
Points Subalgebra of the Interior G-Algebra 595 W. Huang
Twisted Comodule Algebras and the
Generalized Quantum Double 604 H. G. Quan and X. Y. Hua
-Relation on Hypermodules and Fundamental Modules
Over Commutative Fundamental Rings 622 S. M. Anvariyeh, S. Mirvakili, and B. Davvaz
Large Annihilators in Cayley-Dickson Algebras 632 D. K. Biss, D. Dugger, and D. C. Isaksen
On the Local Cohomology of Matlis Reflexive Modules 665 K. Khashyarmanesh and F. Khosh-Ahang
Contents
A n U p p e r B o u n d f o r t h e R e g u l a r i t y o f I d e a l s o f B o r e l T y p e . . . . 6 7 0 S. Ahmad and I. Anwar
A Stable Property of Borel Type Ideals . 674 M. Cimpoeas
Degrees of Characters and Values on
Prime Order Elements 678 G. Navarro
Structure of Maximally Differential Graded
Ideals in Positive Characteristic 680 A. Kumar Maloo
Generalizations of Prime Ideals 686 D. D. Anderson and M. Bataineh
Some Properties of the Schur Multiplier
and Covers of Lie Algebras 697 A. R. Salemkar, V. Alamian, and H. Mohammadzadeh
On Divisible and Torsionfree Modules 708 L. Mao and N. Ding
Representations of Nonstandard Poincare Hopf Algebras 732 S. Yang and Y. Yang
Periodic Linear Groups with the Weak Chain
Conditions on Subgroups of Infinite Central Dimension 749 J. M. Munoz-Escolano, J. Ota I, and N. N. Semko
Root Multiplicities of the Indefinite Kac-Moody
Algebras of Symplectic Type 764 V. W. Klima and K. C. Misra
Irreducibility in the Total Ring of Quotients 783 J. Shapiro
On Growth Types of Quotients of Coxeter Groups
by Parabolic Subgroups 796 S. Viswanath
Castelnuovo-Mumford Regularity of Sums
of Powers of Polynomial Ideals 806 L T. Hoa and T. N. Trung
