De Rudder, Laurent; Hansoul, Georges A Gelfand duality for compact pospaces. (English) Zbl 06904432 Algebra Univers. 79, No. 2, Paper No. 47, 13 p. (2018). MSC: 06F25 18A40 54H10 PDF BibTeX XML Cite \textit{L. De Rudder} and \textit{G. Hansoul}, Algebra Univers. 79, No. 2, Paper No. 47, 13 p. (2018; Zbl 06904432) Full Text: DOI Link OpenURL
Nation, J. B.; Nishida, Joy A refinement of the equaclosure operator. (English) Zbl 1400.08005 Algebra Univers. 79, No. 2, Paper No. 46, 8 p. (2018). Reviewer: Leonid M. Martynov (Omsk) MSC: 08C15 08B15 PDF BibTeX XML Cite \textit{J. B. Nation} and \textit{J. Nishida}, Algebra Univers. 79, No. 2, Paper No. 46, 8 p. (2018; Zbl 1400.08005) Full Text: DOI OpenURL
Pech, Christian; Pech, Maja Polymorphism clones of homogeneous structures: generating sets, Sierpiński rank, cofinality and the Bergman property. (English) Zbl 1402.08001 Algebra Univers. 79, No. 2, Paper No. 45, 17 p. (2018). Reviewer: Yuri Movsisyan (Yerevan) MSC: 08A05 03C15 03C50 08A35 08A40 PDF BibTeX XML Cite \textit{C. Pech} and \textit{M. Pech}, Algebra Univers. 79, No. 2, Paper No. 45, 17 p. (2018; Zbl 1402.08001) Full Text: DOI OpenURL
McNulty, George F.; Willard, Ross Congruence meet-semidistributive locally finite varieties and a finite basis theorem. (English) Zbl 06904429 Algebra Univers. 79, No. 2, Paper No. 44, 20 p. (2018). MSC: 03C05 08B05 08B10 PDF BibTeX XML Cite \textit{G. F. McNulty} and \textit{R. Willard}, Algebra Univers. 79, No. 2, Paper No. 44, 20 p. (2018; Zbl 06904429) Full Text: DOI OpenURL
Bodor, Bertalan; Cameron, Peter J.; Szabó, Csaba Infinitely many reducts of homogeneous structures. (English) Zbl 06904428 Algebra Univers. 79, No. 2, Paper No. 43, 10 p. (2018). MSC: 03C07 20B27 PDF BibTeX XML Cite \textit{B. Bodor} et al., Algebra Univers. 79, No. 2, Paper No. 43, 10 p. (2018; Zbl 06904428) Full Text: DOI arXiv Link OpenURL
Badia, Guillermo; Marcos, João On classes of structures axiomatizable by universal d-Horn sentences and universal positive disjunctions. (English) Zbl 06904426 Algebra Univers. 79, No. 2, Paper No. 41, 14 p. (2018). MSC: 03C05 08A70 12L12 PDF BibTeX XML Cite \textit{G. Badia} and \textit{J. Marcos}, Algebra Univers. 79, No. 2, Paper No. 41, 14 p. (2018; Zbl 06904426) Full Text: DOI OpenURL
Czédli, Gábor; Grätzer, George; Lakser, Harry Congruence structure of planar semimodular lattices: the general swing lemma. (English) Zbl 06904425 Algebra Univers. 79, No. 2, Paper No. 40, 18 p. (2018). MSC: 06C10 06B05 PDF BibTeX XML Cite \textit{G. Czédli} et al., Algebra Univers. 79, No. 2, Paper No. 40, 18 p. (2018; Zbl 06904425) Full Text: DOI Link OpenURL
Cyr, Joe Infinite idempotent quasi-affine algebras need not be hereditarily absorption free. (English) Zbl 1392.08003 Algebra Univers. 79, No. 2, Paper No. 39, 3 p. (2018). MSC: 08A05 08A62 PDF BibTeX XML Cite \textit{J. Cyr}, Algebra Univers. 79, No. 2, Paper No. 39, 3 p. (2018; Zbl 1392.08003) Full Text: DOI OpenURL
Gyenizse, Gergő; Maróti, Miklós Quasiorder lattices of varieties. (English) Zbl 1397.08001 Algebra Univers. 79, No. 2, Paper No. 38, 17 p. (2018). Reviewer: Ivan Chajda (Přerov) MSC: 08A30 08B10 06B15 08B15 PDF BibTeX XML Cite \textit{G. Gyenizse} and \textit{M. Maróti}, Algebra Univers. 79, No. 2, Paper No. 38, 17 p. (2018; Zbl 1397.08001) Full Text: DOI OpenURL
Avery, James Emil; Moyen, Jean-Yves; Ružička, Pavel; Simonsen, Jakob Grue Chains, antichains, and complements in infinite partition lattices. (English) Zbl 06904422 Algebra Univers. 79, No. 2, Paper No. 37, 21 p. (2018). MSC: 06B05 06C15 PDF BibTeX XML Cite \textit{J. E. Avery} et al., Algebra Univers. 79, No. 2, Paper No. 37, 21 p. (2018; Zbl 06904422) Full Text: DOI arXiv Link OpenURL
Kramer, Richard L.; Maddux, Roger D. An error in a proof in: Boolean algebras with operators. I. (English) Zbl 1444.03176 Algebra Univers. 79, No. 2, Paper No. 36, 5 p. (2018). Reviewer: Miklós Ferenczi (Budapest) MSC: 03G15 PDF BibTeX XML Cite \textit{R. L. Kramer} and \textit{R. D. Maddux}, Algebra Univers. 79, No. 2, Paper No. 36, 5 p. (2018; Zbl 1444.03176) Full Text: DOI OpenURL
Pech, Christian; Pech, Maja Polymorphism clones of homogeneous structures: gate coverings and automatic homeomorphicity. (English) Zbl 1400.03059 Algebra Univers. 79, No. 2, Paper No. 35, 24 p. (2018). Reviewer: Jānis Cīrulis (Riga) MSC: 03C15 03C50 08A35 03C40 08A40 PDF BibTeX XML Cite \textit{C. Pech} and \textit{M. Pech}, Algebra Univers. 79, No. 2, Paper No. 35, 24 p. (2018; Zbl 1400.03059) Full Text: DOI arXiv OpenURL
Olfati, Ali Reza Homomorphisms from \(C(X,\mathbb {Z})\) into a ring of continuous functions. (English) Zbl 1398.54033 Algebra Univers. 79, No. 2, Paper No. 34, 26 p. (2018). Reviewer: Eliza Wajch (Siedlce) MSC: 54C40 54D35 54H13 54C05 54C30 PDF BibTeX XML Cite \textit{A. R. Olfati}, Algebra Univers. 79, No. 2, Paper No. 34, 26 p. (2018; Zbl 1398.54033) Full Text: DOI OpenURL
Harding, John; Walker, Carol; Walker, Elbert The convolution algebra. (English) Zbl 06904418 Algebra Univers. 79, No. 2, Paper No. 33, 31 p. (2018). MSC: 03G10 03B45 06D20 PDF BibTeX XML Cite \textit{J. Harding} et al., Algebra Univers. 79, No. 2, Paper No. 33, 31 p. (2018; Zbl 06904418) Full Text: DOI arXiv OpenURL
Ball, Richard N.; Pultr, Aleš Maximal essential extensions in the context of frames. (English) Zbl 06904417 Algebra Univers. 79, No. 2, Paper No. 32, 13 p. (2018). MSC: 06D22 54A05 18A22 PDF BibTeX XML Cite \textit{R. N. Ball} and \textit{A. Pultr}, Algebra Univers. 79, No. 2, Paper No. 32, 13 p. (2018; Zbl 06904417) Full Text: DOI OpenURL
Behrisch, Mike; Vargas-García, Edith Unique inclusions of maximal C-clones in maximal clones. (English) Zbl 1397.08003 Algebra Univers. 79, No. 2, Paper No. 31, 21 p. (2018). Reviewer: Danica Jakubiková-Studenovská (Košice) MSC: 08A40 08A02 08A99 PDF BibTeX XML Cite \textit{M. Behrisch} and \textit{E. Vargas-García}, Algebra Univers. 79, No. 2, Paper No. 31, 21 p. (2018; Zbl 1397.08003) Full Text: DOI arXiv Link OpenURL
Ham, Lucy; Jackson, Marcel Axiomatisability and hardness for universal Horn classes of hypergraphs. (English) Zbl 06904415 Algebra Univers. 79, No. 2, Paper No. 30, 17 p. (2018). MSC: 08C15 05C65 05C60 68Q17 PDF BibTeX XML Cite \textit{L. Ham} and \textit{M. Jackson}, Algebra Univers. 79, No. 2, Paper No. 30, 17 p. (2018; Zbl 06904415) Full Text: DOI arXiv OpenURL
Gusev, Sergey V. Special elements of the lattice of monoid varieties. (English) Zbl 06904414 Algebra Univers. 79, No. 2, Paper No. 29, 12 p. (2018). MSC: 20M07 08B15 PDF BibTeX XML Cite \textit{S. V. Gusev}, Algebra Univers. 79, No. 2, Paper No. 29, 12 p. (2018; Zbl 06904414) Full Text: DOI arXiv OpenURL
Andréka, Hajnal; Givant, Steven Coset relation algebras. (English) Zbl 06904413 Algebra Univers. 79, No. 2, Paper No. 28, 53 p. (2018). MSC: 03G15 03E20 20A15 PDF BibTeX XML Cite \textit{H. Andréka} and \textit{S. Givant}, Algebra Univers. 79, No. 2, Paper No. 28, 53 p. (2018; Zbl 06904413) Full Text: DOI arXiv Link OpenURL
Kehayopulu, Niovi A note on Archimedean ordered semigroups. (English) Zbl 1414.06007 Algebra Univers. 79, No. 2, Paper No. 27, 8 p. (2018). Reviewer: Xie Xiang-Yun (Guangdong) MSC: 06F05 20M10 PDF BibTeX XML Cite \textit{N. Kehayopulu}, Algebra Univers. 79, No. 2, Paper No. 27, 8 p. (2018; Zbl 1414.06007) Full Text: DOI OpenURL
Stronkowski, Michał M. Axiomatizations of universal classes through infinitary logic. (English) Zbl 1403.03054 Algebra Univers. 79, No. 2, Paper No. 26, 12 p. (2018). Reviewer: Daniele Mundici (Firenze) MSC: 03C52 03C75 03C40 PDF BibTeX XML Cite \textit{M. M. Stronkowski}, Algebra Univers. 79, No. 2, Paper No. 26, 12 p. (2018; Zbl 1403.03054) Full Text: DOI OpenURL
Chajda, Ivan; Goldstern, Martin; Länger, Helmut A note on homomorphisms between products of algebras. (English) Zbl 06904410 Algebra Univers. 79, No. 2, Paper No. 25, 7 p. (2018). MSC: 06B05 PDF BibTeX XML Cite \textit{I. Chajda} et al., Algebra Univers. 79, No. 2, Paper No. 25, 7 p. (2018; Zbl 06904410) Full Text: DOI Link OpenURL
Mundici, Daniele Recognizing free generating sets of \(\ell\)-groups. (English) Zbl 1473.06016 Algebra Univers. 79, No. 2, Paper No. 24, 15 p. (2018). MSC: 06D35 06F15 06F20 20F10 20F60 20F05 PDF BibTeX XML Cite \textit{D. Mundici}, Algebra Univers. 79, No. 2, Paper No. 24, 15 p. (2018; Zbl 1473.06016) Full Text: DOI OpenURL
Lipparini, Paolo The Jónsson distributivity spectrum. (English) Zbl 1400.08004 Algebra Univers. 79, No. 2, Paper No. 23, 16 p. (2018). Reviewer: Alexandr Kazda (Klosterneuburg) MSC: 08B10 PDF BibTeX XML Cite \textit{P. Lipparini}, Algebra Univers. 79, No. 2, Paper No. 23, 16 p. (2018; Zbl 1400.08004) Full Text: DOI arXiv OpenURL
Komorowski, A.; Romanowska, A. B.; Smith, J. D. H. Keimel’s problem on the algebraic axiomatization of convexity. (English) Zbl 1400.08002 Algebra Univers. 79, No. 2, Paper No. 22, 20 p. (2018). Reviewer: C. Pereira da Silva (Curitiba) MSC: 08A05 08A99 52A01 PDF BibTeX XML Cite \textit{A. Komorowski} et al., Algebra Univers. 79, No. 2, Paper No. 22, 20 p. (2018; Zbl 1400.08002) Full Text: DOI OpenURL
Grätzer, G.; Lakser, H. Some preliminary results on the set of principal congruences of a finite lattice. (English) Zbl 06904406 Algebra Univers. 79, No. 2, Paper No. 21, 10 p. (2018). MSC: 06B10 PDF BibTeX XML Cite \textit{G. Grätzer} and \textit{H. Lakser}, Algebra Univers. 79, No. 2, Paper No. 21, 10 p. (2018; Zbl 06904406) Full Text: DOI arXiv OpenURL
Maddux, Roger D. Subcompletions of representable relation algebras. (English) Zbl 1444.03177 Algebra Univers. 79, No. 2, Paper No. 20, 32 p. (2018). Reviewer: Miklós Ferenczi (Budapest) MSC: 03G15 PDF BibTeX XML Cite \textit{R. D. Maddux}, Algebra Univers. 79, No. 2, Paper No. 20, 32 p. (2018; Zbl 1444.03177) Full Text: DOI arXiv OpenURL
Bergman, George M. Submonoids of groups, and group-representability of restricted relation algebras. (English) Zbl 06904404 Algebra Univers. 79, No. 2, Paper No. 19, 15 p. (2018). MSC: 03G15 06A06 20M20 PDF BibTeX XML Cite \textit{G. M. Bergman}, Algebra Univers. 79, No. 2, Paper No. 19, 15 p. (2018; Zbl 06904404) Full Text: DOI arXiv OpenURL
Porst, Hans-E. Hopf monoids in varieties. (English) Zbl 1397.08006 Algebra Univers. 79, No. 2, Paper No. 18, 28 p. (2018). Reviewer: Loïc Foissy (Calais) MSC: 08B99 08C05 16T05 18B99 PDF BibTeX XML Cite \textit{H.-E. Porst}, Algebra Univers. 79, No. 2, Paper No. 18, 28 p. (2018; Zbl 1397.08006) Full Text: DOI OpenURL
Jeřábek, Emil Galois connection for multiple-output operations. (English) Zbl 1402.08002 Algebra Univers. 79, No. 2, Paper No. 17, 37 p. (2018). Reviewer: Lavinia Ciungu (Iowa City) MSC: 08A40 06F05 06A15 PDF BibTeX XML Cite \textit{E. Jeřábek}, Algebra Univers. 79, No. 2, Paper No. 17, 37 p. (2018; Zbl 1402.08002) Full Text: DOI arXiv OpenURL
Givant, Steven Relation algebras and groups. (English) Zbl 06904401 Algebra Univers. 79, No. 2, Paper No. 16, 38 p. (2018). MSC: 03G15 03E20 20A15 PDF BibTeX XML Cite \textit{S. Givant}, Algebra Univers. 79, No. 2, Paper No. 16, 38 p. (2018; Zbl 06904401) Full Text: DOI arXiv OpenURL