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2003, Issue 1  


RESEARCH ARTICLE
Almost all derivative quivers of artinian biserial rings contain chains
Tetjana Avdeeva, Olexandr Ganyushkin
1
Green's relations on the seminearring of full hypersubstitutions of type $(n)$
T. Changphas, K. Denecke
6
Multi-algebras from the viewpoint of algebraic logic
Jānis Cīrulis
20
A note on maximal ideals in ordered semigroups
N. Kehayopulu, J. Ponizovskii, M. Tsingelis
32
On intersections of normal subgroups in free groups
O. V. Kulikova
36
Direct decompositions of artinian modules related to formations of groups
Leonid A. Kurdachenko, Javier Otal
68
Hyperbolic spaces from self-similar group actions
Volodymyr Nekrashevych
77
Principal quasi-ideals of cohomological dimension 1
B. V. Novikov
87
Uniform ball structures
I. V. Protasov
93
An additive divisor problem in $\mathbb{Z}[i]$
O. V. Savasrtu, P. D. Varbanets
103
Ramseyan variations on symmetric subsequences
Oleg Verbitsky
111
Algebra and Discrete Mathematics
 
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