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Dominance in the family of Sugeno-Weber t-norms. (English) Zbl 1250.03115

Dominance relation is an important tool in the class of aggregation functions to ensure preservation of some properties, such as the transitivity of aggregated fuzzy equivalence relations or fuzzy orders. Dominance in several parametric families of triangular norms was studied in the framework of functional inequalities since the eighties; see, e.g., [H. Sherwood, Aequationes Math. 27, 255–273 (1984; Zbl 0598.26032)]. The present paper focuses on the study of the dominance relation in the family of Sugeno-Weber triangular norms. In the central Theorem 2, the authors completely describe all couples of Sugeno-Weber t-norms linked by the dominance relation, which is shown to be transitive in these cases, and hence an equivalence relation over the family studied.

MSC:

03E72 Theory of fuzzy sets, etc.
03B52 Fuzzy logic; logic of vagueness
03C10 Quantifier elimination, model completeness, and related topics

Citations:

Zbl 0598.26032

Software:

QEPCAD

References:

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