Uninorms internal on one or more non-trivial cuts

Each uninorm is trivially internal on the cut in the neutral element and uninorms internal on the boundary were already completely characterized. We discuss uninorms which are internal on some non-trivial cut and show that each such uninorm can be expressed as a non-trivial ordinal sum. In individua...

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Vydané v:Information sciences Ročník 653; s. 119793
Hlavný autor: Mesiarová-Zemánková, Andrea
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Elsevier Inc 01.01.2024
Predmet:
Internal function
Ordinal sum
Uninorm
Ordinal sum
Internal function
Uninorm
ISSN:0020-0255, 1872-6291
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Shrnutí:Each uninorm is trivially internal on the cut in the neutral element and uninorms internal on the boundary were already completely characterized. We discuss uninorms which are internal on some non-trivial cut and show that each such uninorm can be expressed as a non-trivial ordinal sum. In individual cases we discuss the structure of such conjunctive (disjunctive) uninorm and show that the corresponding ordinal sum contains uninorms, t-conorms, t-superconorms and generalized sub-uninorms (t-norms, t-subnorms and generalized super-uninorms). Moreover, we discuss the ordinal sum decomposition of uninorms with several internal cuts and show their decomposition into semigroups that have only constant internal cuts, and possibly an internal cut in the neutral element.
ISSN:0020-0255
1872-6291
DOI:10.1016/j.ins.2023.119793