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Erschienen in: Soft Computing 6/2017

25.08.2015 | Focus

Factor varieties

verfasst von: Antonino Salibra, Antonio Ledda, Francesco Paoli

Erschienen in: Soft Computing | Ausgabe 6/2017

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Abstract

The universal algebraic literature is rife with generalisations of discriminator varieties, whereby several investigators have tried to preserve in more general settings as much as possible of their structure theory. Here, we modify the definition of discriminator algebra by having the switching function project onto its third coordinate in case the ordered pair of its first two coordinates belongs to a designated relation (not necessarily the diagonal relation). We call these algebras factor algebras and the varieties they generate factor varieties. Among other things, we provide an equational description of these varieties and match equational conditions involving the factor term with properties of the associated factor relation. Factor varieties include, apart from discriminator varieties, several varieties of algebras from quantum and fuzzy logics.

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Fußnoten
1
The symbols \(\barwedge \) and \(\veebar \) respectively denote the meta-linguistical conjunction and disjunction in the first order theory of any class of algebras.
 
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Metadaten
Titel
Factor varieties
verfasst von
Antonino Salibra
Antonio Ledda
Francesco Paoli
Publikationsdatum
25.08.2015
Verlag
Springer Berlin Heidelberg
Erschienen in
Soft Computing / Ausgabe 6/2017
Print ISSN: 1432-7643
Elektronische ISSN: 1433-7479
DOI
https://doi.org/10.1007/s00500-015-1828-9

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