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Erschienen in: Soft Computing 1/2017

07.10.2016 | Focus

Complexity of some language fragments of fuzzy logics

verfasst von: Zuzana Haniková

Erschienen in: Soft Computing | Ausgabe 1/2017

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Abstract

Computational complexity of the semigroup fragment (of the algebraic semantics) and the implicational fragment of some fuzzy logics is studied, from the perspective of the complexity of the full logic. The available results appear to confirm the key role of the implicational fragments. Some other language fragments, as well as the notion of language fragment itself, are discussed.

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Fußnoten
1
An extension is understood to be an axiomatic extension in the same language.
 
2
It follows from that paper that the implicational fragment of product logic is contained in the implicational fragment of Łukasiewicz logic; this also follows from the fact that the standard MV-algebra is isomorphic to the cut product algebra (cf. Hájek 1998).
 
3
A propositional logic can itself be regarded as a syntactic fragment of its (putative) predicate expansions.
 
4
Proofs are of polynomial size in formula size; the same is true about, e.g., BCI and indeed MLL, cf. Buzskowski (2008) and Kanovich (1991).
 
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Metadaten
Titel
Complexity of some language fragments of fuzzy logics
verfasst von
Zuzana Haniková
Publikationsdatum
07.10.2016
Verlag
Springer Berlin Heidelberg
Erschienen in
Soft Computing / Ausgabe 1/2017
Print ISSN: 1432-7643
Elektronische ISSN: 1433-7479
DOI
https://doi.org/10.1007/s00500-016-2346-0

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