Finite lattices as relative congruence lattices of finite algebras

被引:0
作者
A. M. Nurakunov
机构
[1] National Academy of Science,Chui pr., 265a, Institute of Mathematics
来源
Algebra universalis | 2007年 / 57卷
关键词
Primary 08A30; Secondary 08C15; quasivariety; finite lattice; relative congruence lattice;
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摘要
Let A be a finite algebra and \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathcal{Q}}$$\end{document} a quasivariety. By \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\rm Con}_{{\mathcal{Q}}}$$\end{document} A is meant the lattice of congruences θ on A with \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$A/\theta \in {\mathcal{Q}}$$\end{document}. For any positive integer n, we give conditions on a finite algebra A under which for any n-element lattice L there is a quasivariety \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathcal{R}}$$\end{document} such that \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\rm Con}_{R} A \cong L$$\end{document}.
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页码:207 / 214
页数:7
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