Discussiones Mathematicae - General Algebra and Applications 29(2) (2009)

1
A. Anantpinitwatna, T. Poomsa-ard
Special m-hyperidentities in biregular leftmost graph varieties of type (2,0)
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81
2
M. Couceiro, S. Foldes
Function classes and relational constraints stable under compositions with cloness
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109
3
K. Denecke, D. Phusanga
Hypersatisfaction of formulas in algebraic systems
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123
4
I. Dimitrova, J. Koppitz
The maximal subsemigroups of the ideals of some semigroups of partial injections
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153
5
I. Chajda, G. Eigenthaler
Two constructions of De Morgan algebras and De Morgan quasirings
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169
6
Ch. Boonpok, J. Khampakdee
Semi-open sets in biclosure spaces
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181
7
M. Knyazhansky, T. Plotkin
Knowledge bases and automorphic equivalence of multi-models versus linear spaces and graphs
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203

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