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This article is cited in 14 scientific papers (total in 14 papers)
Quasivariety lattices of pointed Abelian groups
A. M. Nurakunov Institute of Theoretical and Applied Mathematics, National Academy of Science of the Kyrgyz Republic, pr. Chui 265a, Bishkek, 720071, Kyrgyzstan
Abstract:
We give a description of quasicritical pointed Abelian groups. It is proved that the quasivariety lattice of pointed Abelian groups is $Q$-universal. We construct a quasivariety lattice of pointed Abelian groups whose set of finite sublattices is uncomputable. It is shown that there exists a continuum of such lattices of quasivarieties.
Keywords:
quasivariety of algebras, pointed Abelian group, congruence, congruence lattice, quasivariety lattice, Birkhoff–Mal'tsev problem, uncomputable set.
Received: 28.01.2014 Revised: 23.02.2014
Citation:
A. M. Nurakunov, “Quasivariety lattices of pointed Abelian groups”, Algebra Logika, 53:3 (2014), 372–400; Algebra and Logic, 53:3 (2014), 238–257
Linking options:
https://www.mathnet.ru/eng/al640 https://www.mathnet.ru/eng/al/v53/i3/p372
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Abstract page: | 373 | Full-text PDF : | 100 | References: | 69 | First page: | 12 |
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