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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/122232
A Generalization of Trapezoidal Fuzzy Numbers Based on Modal Interval Theory
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We propose a generalization of trapezoidal fuzzy numbers based on modal interval theory, which we name 'modal interval trapezoidal fuzzy numbers'. In this generalization, we accept that the alpha cuts associated with a trapezoidal fuzzy number can be modal intervals, also allowing that two interval modalities can be associated with a trapezoidal fuzzy number. In this context, it is difficult to maintain the traditional graphic representation of trapezoidal fuzzy numbers and we must use the interval plane in order to represent our modal interval trapezoidal fuzzy numbers graphically. Using this representation, we can correctly reflect the modality of the alpha cuts. We define some concepts from modal interval analysis and we study some of the related properties and structures, proving, among other things, that the inclusion relation provides a lattice structure on this set. We will also provide a semantic interpretation deduced from the modal interval extensions of real continuous functions and the semantic modal interval theorem. The application of modal intervals in the field of fuzzy numbers also provides a new perspective on and new applications of fuzzy numbers.
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JORBA, Lambert, ADILLÓN, Román. A Generalization of Trapezoidal Fuzzy Numbers Based on Modal Interval Theory. _Symmetry_. 2017. Vol. 9, núm. 10(198), pàgs. 1-20. [consulta: 21 de gener de 2026]. ISSN: 2073-8994. [Disponible a: https://hdl.handle.net/2445/122232]