Scalar and fuzzy cardinalities of crisp and fuzzy multisets

Authors:
Jaume Casasnovas;Francesc Rosselló
Affiliations:
Department of Mathematics and Computer Science, University of the Balearic Islands, 07122 Palma de Mallorca, Spain;Department of Mathematics and Computer Science, University of the Balearic Islands, 07122 Palma de Mallorca, Spain
Venue:
International Journal of Intelligent Systems - Fuzzy Bags, Cardinality, and Quantification
Year:
2009

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Abstract

We define in an axiomatic way scalar and fuzzy cardinalities of finite multisets over ]0, 1], and we obtain explicit descriptions for them. We show that, for multisets over ]0, 1] associated to finite fuzzy sets, the cardinalities defined in this study are equivalent to the cardinalities of the corresponding fuzzy sets previously introduced in the literature. Finally, we also define in an axiomatic way scalar and fuzzy cardinalities of finite fuzzy multisets over any set X, and we use the descriptions of the cardinalities of finite multisets over ]0, 1] to obtain explicit characterizations of the former. © 2009 Wiley Periodicals, Inc.