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This article is cited in 4 scientific papers (total in 4 papers)
Existence of independent quasi-equational bases
M. V. Schwidefskyabc a Sobolev Institute of Mathematics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk
b Novosibirsk State Technical University
c Novosibirsk State University
Abstract:
We give a sufficient condition for a quasivariety $\mathbf{K}$, weaker than the one found earlier by A. V. Kravchenko, A. M. Nurakunov, and the author, which ensures that $\mathbf{K}$ contains continuum many subquasivarieties with no independent quasi-equational basis relative to $\mathbf{K}$. This condition holds, in particular, for any almost ${f}{f}$-universal quasivariety $\mathbf{K}$.
Keywords:
quasivariety, independent quasi-equational basis.
Received: 13.07.2019 Revised: 12.02.2020
Citation:
M. V. Schwidefsky, “Existence of independent quasi-equational bases”, Algebra Logika, 58:6 (2019), 769–803; Algebra and Logic, 58:6 (2020), 514–537
Linking options:
https://www.mathnet.ru/eng/al928 https://www.mathnet.ru/eng/al/v58/i6/p769
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Abstract page: | 341 | Full-text PDF : | 23 | References: | 36 | First page: | 13 |
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