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I-Fuzzy equivalence relations and I-fuzzy partitions

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    0322890 - ÚTIA 2009 RIV NL eng J - Journal Article
    Mesiar, Radko - Jayaram, B.
    I-Fuzzy equivalence relations and I-fuzzy partitions.
    [I-Fuzzy relácie ekvivalencie a I-Fuzzy rozklady.]
    Information Sciences. Roč. 179, č. 9 (2009), s. 1278-1297. ISSN 0020-0255. E-ISSN 1872-6291
    R&D Projects: GA ČR GA402/08/0618
    Institutional research plan: CEZ:AV0Z10750506
    Keywords : Conjunctor * Fuzzy equivalence relation * Fuzzy partition * Implicator * Semi-copula
    Subject RIV: BA - General Mathematics
    Impact factor: 3.291, year: 2009
    http://library.utia.cas.cz/separaty/2009/E/mesiar-i-fuzzy equivalence relations and i-fuzzy partitions.pdf

    A T-fuzzy equivalence relation is a fuzzy binary relation on a set X which is reflexive, symmetric and T-transitive for a t-norm T. In this work, we eploy a related form of C-transitivity, viz., I-transitivity, where I is an implicator. We show that although every I-fuzzy equivalence relation can be shown to be a C-fuzzy equivalence relation, there exist C-fuzzy equivalence relations that are not I-fuzzy equivalence relations and hence these concepts are not equivalent.

    Relace T-fuzzy ekvivalence je binární fuzzy relace na množině X, která je reflexivní, symetrická a T-tranzitivní pro t-normu T. V práci jsme zavedli tzv. I-transitivitu, související s C-tranzitivitou, kde I je implikátor. Ukázali jsme, že zatím co každá I-fuzzy relace ekvivalencí je i C-fuzzy relace ekvivalencí, existuje C-fuzzy relace ekvivalencí, která není I-fuzzy relace ekvivalencí a tedy tyto dva přístupy nejsou ekvivalentní.
    Permanent Link: http://hdl.handle.net/11104/0171023

     
     
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