Knyazhansky, Marina; Plotkin, Tatjana Knowledge bases and automorphic equivalence of multi-models versus linear spaces and graphs. (English) Zbl 1207.68130 Discuss. Math., Gen. Algebra Appl. 29, No. 2, 203-213 (2009). MSC: 68P15 68P20 PDF BibTeX XML Cite \textit{M. Knyazhansky} and \textit{T. Plotkin}, Discuss. Math., Gen. Algebra Appl. 29, No. 2, 203--213 (2009; Zbl 1207.68130) Full Text: DOI Link OpenURL
Khampakdee, Jeeranunt; Boonpok, Chawalit Semi-open sets in biclosure spaces. (English) Zbl 1197.54010 Discuss. Math., Gen. Algebra Appl. 29, No. 2, 181-201 (2009). MSC: 54A05 54E55 54C08 PDF BibTeX XML Cite \textit{J. Khampakdee} and \textit{C. Boonpok}, Discuss. Math., Gen. Algebra Appl. 29, No. 2, 181--201 (2009; Zbl 1197.54010) Full Text: DOI Link OpenURL
Chajda, Ivan; Eigenthaler, Günther Two constructions of De Morgan algebras and De Morgan quasirings. (English) Zbl 1213.06005 Discuss. Math., Gen. Algebra Appl. 29, No. 2, 169-180 (2009). Reviewer: Sergiu Rudeanu (Bucureşti) MSC: 06D30 06E20 PDF BibTeX XML Cite \textit{I. Chajda} and \textit{G. Eigenthaler}, Discuss. Math., Gen. Algebra Appl. 29, No. 2, 169--180 (2009; Zbl 1213.06005) Full Text: DOI Link OpenURL
Dimitrova, Ilinka; Koppitz, Jörg The maximal subsemigroups of the ideals of some semigroups of partial injections. (English) Zbl 1198.20054 Discuss. Math., Gen. Algebra Appl. 29, No. 2, 153-167 (2009). MSC: 20M20 20M12 PDF BibTeX XML Cite \textit{I. Dimitrova} and \textit{J. Koppitz}, Discuss. Math., Gen. Algebra Appl. 29, No. 2, 153--167 (2009; Zbl 1198.20054) Full Text: DOI Link OpenURL
Denecke, Klaus; Phusanga, Dara Hypersatisfaction of formulas in algebraic systems. (English) Zbl 1214.08001 Discuss. Math., Gen. Algebra Appl. 29, No. 2, 123-151 (2009). Reviewer: Manfred Armbrust (Köln) MSC: 08A99 03C05 PDF BibTeX XML Cite \textit{K. Denecke} and \textit{D. Phusanga}, Discuss. Math., Gen. Algebra Appl. 29, No. 2, 123--151 (2009; Zbl 1214.08001) Full Text: DOI OpenURL
Couceiro, Miguel; Foldes, Stephan Function classes and relational constraints stable under compositions with clones. (English) Zbl 1203.06005 Discuss. Math., Gen. Algebra Appl. 29, No. 2, 109-121 (2009). MSC: 06A15 06E30 08A02 08A40 PDF BibTeX XML Cite \textit{M. Couceiro} and \textit{S. Foldes}, Discuss. Math., Gen. Algebra Appl. 29, No. 2, 109--121 (2009; Zbl 1203.06005) Full Text: DOI arXiv OpenURL
Anantpinitwatna, Apinant; Poomsa-Ard, Tiang Special \(M\)-hyperidentities in biregular leftmost graph varieties of type \((2,0)\). (English) Zbl 1198.05086 Discuss. Math., Gen. Algebra Appl. 29, No. 2, 81-107 (2009). MSC: 05C25 08B15 03C05 PDF BibTeX XML Cite \textit{A. Anantpinitwatna} and \textit{T. Poomsa-Ard}, Discuss. Math., Gen. Algebra Appl. 29, No. 2, 81--107 (2009; Zbl 1198.05086) Full Text: DOI OpenURL
Denecke, Klaus (ed.); Koppitz, Jörg (ed.) Special issue: Selected papers based on the presentations at the 77th workshop on general algebra (AAA77) and the 24th conference for young algebraists, Potsdam, Germany, March 19–22, 2009. (English) Zbl 1215.08001 Discuss. Math., Gen. Algebra Appl. 29, No. 2, 79-213 (2009). MSC: 08-06 08Axx 00B25 PDF BibTeX XML OpenURL