A nonpermutational integral relation algebra
type: Item
instance of: scholarly article
title: A nonpermutational integral relation algebra
zbMATH Open document ID: 0782.03030
published in: Michigan Mathematical Journal
publication date: 1993-06-29T00:00:00Z
review text: The authors, starting from a problem raised by McKenzie, show that there are infinitely many nonpermutational integral relation set algebras such that a nonprincipal ultraproduct of these is permutable. They infer that the class of all permutational relation algebras is not finitely axiomatizable over the class of all integral relation set algebras. The paper is remarkably self-contained.
Mathematics Subject Classification ID: 03G15
zbMATH DE Number: 222023
zbMATH Keywords: nonpermutational integral relation set algebras
zbMATH Keywords: nonprincipal ultraproduct
zbMATH Keywords: permutational relation algebras
zbMATH Keywords: finitely axiomatizable
author: Hajnal Andréka
author: Ivo Düntsch
author: István Németi
reviewed by: Sergiu Rudeanu
MaRDI profile type: Publication
full work available at URL: https://doi.org/10.1307/mmj/1029004592
OpenAlex ID: W1993001926
DOI: 10.1307/MMJ/1029004592
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description: scientific article; zbMATH DE number 222023