COMMUNICATIONS IN ALGEBRA®
Volume 32, Number 7, 2004
CONTENTS
Estimation of Genus for Certain Arithmetic Groups 2479 C. H. Kim and J. K. Koo
Finitely Generated Commutative Regular Semigroups 2497 J. C. Resales and J. Gutierrez-Gutierrez
One-Relator Products Induced from Generalized Triangle Groups 2505 J. Howie and R. Shwartz
Which Words Have an Efficient Result? 2527 Q. Li
On Groups in Which Every Subgroup of Infinite Rank Is Subnormal
of Bounded Defect 2547 M. J. Evans and Y. Kim
Equivariant Operators Between Some Modules of the Lie Algebra
of Vector Fields 2559 N. Poncin
Maximal Subalgebras of Kac-Moody Algebras 2573 E. M. Souidi and M. Zaoui
The Universal Steenrod Algebra at Odd Primes 2589 A. Ciampella and L. A. Lomonaco
On a Class of Subdirect Products of Left and Right Clifford
Semigroups 2609 M. K. Sen, S. Ghosh, and S. Pal
Comparability, Stability, and Completions of Ideals 2617 D. Lu, Q. Li, and W. Tong
Power Linear Keller Maps of Nilpotency Index Two 2635 C. C.-A. Cheng and T. Sakkalis
Combining Local and Von Neumann Regular Rings 2639
£. A. Osba, M. Henriksen, and O. Alkam
A Characteristic Property of Finite />-Nilpotent Groups 2655 Kh. A. Al-Sharo
(continued on inside back cover)
COMMUNICATIONS IN ALGEBRA®, 32(7), 2004
Contents Continued
Space Valuations Are Not Uniquely Determined by Their Centers 2659 M. Nunez
Projective Representations of Finite Reflection G r o u p s . Ill 2679 A. O. Morris
Quasi-finiteness and Finiteness of Ring-Extensions 2695 S. Oda
Factoriality of Certain Threefolds Complete Intersection in P5 with
Ordinary Double Points 2705 C. Ciliberto and V. Di Gennaro
Linear Systems on Fano Threefolds. 1 2711 S. Lee
A Nonlinear Version of Noether's Type Theorem 2723 S. Brivio and G. P. Pirola
Prime Ideals of Cancellative Semigroups 2733 J. Okniriski
On Induced Modules Over Ore Extensions 2743 A. LeroyandJ. Matczuk
Semisimplicity of the Categories of Yetter-Drinfeld Modules and
Long Dimodules 2767 S. Caenepeel and T. Guedenon
Rank and Status in Semigroup Theory 2783 A. Cherubim, J. M. Howie, and B. Piochi
Regularity on Near Permutation Semigroups 2S03 J. M. Andre
On Matrix Rings and Subhereditary Radicals 2827 K. L Beidar, W.-F. Ke, and E. R. Puczylowski
Left Quotient Associative Pairs and Morita Invariant Properties 2841 M A. Gomez Lozano and M. Sites Molina
The Algebra of Invariants of 3 x 3 Matrices Over a Field of
Arbitrary Characteristic 2863 A. A. Lopatin
