Algebra
Colloquium
On Endomorphisms of Free Algebras A.A. Mikhalev, V. Shpilrain and J.-T. Yu Structures of Free n-Quasi lattices
R. Padmanabhan and P. Penner Finite Relational Disjunctions R. Thron and J. Koppitz
On Quasi-principally Injective Modules
N.V. Sanh, K.P. Shum, S. Dhompongsa and S. Wongwai
Generalizations of Principal Injectivity J.L. Zhang and J. Wu
On Perfect Non-balanced Functions Z.Z. Wan
Cyclic Codes over Galois Rings Z.-X. Wan
Intermediate Matrix Rings and Morita-like Equivalences Y.H. Xu, K.P. Shum and Y. Fong
Separativity over Regular Rings H.Y. Chen and F.-A. Li
Generalized W and H Type Lie Algebras K.-B. Nam
On Products of Normal Supersoluble Subgroups E.R. Perez, Jr.
A Formula to Determine Zero-dimensional Ideals Being Annihilating Ideals of Linear Recurring Arrays P.Z. Lu and M.L. Liu
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Algebra
Colloquium
Volume 6 • Number 4 • December 1999
Some Factorizations of the Fibonacci Word 361 G. Pirillo
Faithful Flatness and Coflatness of Hopf Algebras 369 H.-X. Chen
A New Proof for the Canonical Bases of Type A 277 J. Du
Triangle Buildings and Triangle Groups over GF(8) 385 J.G. Xia
Irreducible Characters for Algebraic Groups in
Characteristic Two (II) 401 J.C. Ye and Z.G. Zhou
Tameness and the Right Ideal 0{N) 413 S.D. Scott
Bicrossproduct Hopf Algebras 439 E.S. Kirn, Y.S. Park and S.B. Yoon
On p-Blocks of Complexity at Most 2 449 Y.J. Ma
Relative Projectivity for Hopf Algebras 455 S.L. Yang
Tilting Comodules over Semi-Perfect Coalgebras 461 M.Y. Wang
Tame Algebras are Wild 473 C.M. Ringel
Contents for Volume 6 481 Author Index for Volume 6 483
