Results 21 to 30 of about 74 (68)
Quasivarieties of Wajsberg hoops
Fuzzy Sets and Systems, 2023 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Properties of semigroups of elementary types of model classes
Қарағанды университетінің хабаршысы. Математика сериясыThe study of classes of first-order countable language models and their properties is an important direction in model theory. Of particular interest are axiomatizable classes of models (varieties, quasivarieties, finitely axiomatizable classes ...
A. Kabidenov +3 more
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Note on quasivarieties generated by finite pointed abelian groups
Open MathematicsWe prove that a finite pointed abelian group generates a finitely axiomatizable variety that has a finite quasivariety lattice. As a consequence, we obtain that a quasivariety generated by a finite pointed abelian group has a finite basis of quasi ...
Basheyeva Ainur, Lutsak Svetlana
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Locally Finite Quasivarieties of MV-algebras
, 1997 Preprint enviat per a la seva publicació: [https://arxiv.org/abs/1405.7504]
Gispert Brasó, Joan +1 more
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Congruence permutability in quasivarieties
It is shown that a natural notion of congruence permutability for quasivarieties already implies ``being a variety''. The result follows immediately from [3] and the sole aim of this note is to state it explicitly, together with a telegraphic proof.
Carai, Luca +2 more
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Rectangular groupoids and related structures.
Discrete Math, 2013 Boykett T.
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Structural completeness in quasivarieties
In this paper we study various forms of (hereditary) structural completeness for quasivarieties of algebras, using mostly algebraic techniques. More specifically we study relative weakly projective algebras and the way they interact with structural completeness in quasivarieties.
Aglianó, Paolo, CItkin, Alex
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Quasivarieties of De Morgan algebras: RCEP
, 1993 Summary: We prove that there is a least strict quasivariety (i.e., a quasivariety which is not a variety) of De Morgan algebras and that such a quasivariety is perhaps the only strict quasivariety enjoying the relative congruence extension property.
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Profinite Locally Finite Quasivarieties
Studia Logica, 2023zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Anvar M. Nurakunov +1 more
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