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Algebra i logika, 2015, Volume 54, Number 3, Pages 381–398
DOI: https://doi.org/10.17377/alglog.2015.54.305
(Mi al699)
 

This article is cited in 16 scientific papers (total in 16 papers)

Complexity of quasivariety lattices

M. V. Schwidefskyab

a Sobolev Institute of Mathematics, pr. Akad. Koptyuga 4, Novosibirsk, 630090, Russia
b Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia
References:
Abstract: If a quasivariety $\mathbf A$ of algebraic systems of finite signature satisfies some generalization of a sufficient condition for $Q$-universality treated by M. E. Adams and W. A. Dziobiak, then, for any at most countable set $\{\mathcal S_i\mid i\in I\}$ of finite semilattices, the lattice $\prod_{i\in I}\operatorname{Sub}(\mathcal S_i)$ is a homomorphic image of some sublattice of a quasivariety lattice $\operatorname{Lq}(\mathbf A)$. Specifically, there exists a subclass $\mathbf{K\subseteq A}$ such that the problem of embedding a finite lattice in a lattice $\operatorname{Lq}(\mathbf K)$ of $\mathbf K$-quasivarieties is undecidable. This, in particular, implies a recent result of A. M. Nurakunov.
Keywords: computable set, lattice, quasivariety, $Q$-universality, undecidable problem, universal class, variety.
Received: 17.09.2014
Revised: 03.05.2015
English version:
Algebra and Logic, 2015, Volume 54, Issue 3, Pages 245–257
DOI: https://doi.org/10.1007/s10469-015-9344-7
Bibliographic databases:
Document Type: Article
UDC: 512.56+512.57+510.53
Language: Russian
Citation: M. V. Schwidefsky, “Complexity of quasivariety lattices”, Algebra Logika, 54:3 (2015), 381–398; Algebra and Logic, 54:3 (2015), 245–257
Citation in format AMSBIB
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\by M.~V.~Schwidefsky
\paper Complexity of quasivariety lattices
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\vol 54
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\pages 381--398
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\transl
\jour Algebra and Logic
\yr 2015
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\pages 245--257
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    Cycle of papers
    This publication is cited in the following 16 articles:
    Citing articles in Google Scholar: Russian citations, English citations
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    Алгебра и логика Algebra and Logic
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