Abstract
The arithmetic operations given between the Interval Type-2 Trapezoidal Fuzzy Numbers (IT2TrFN)s should satisfy the closeness property. Otherwise, the result encountered when the operations are used may be meaningless and not suitable for the purpose. The aim of this note is to show errors in the definitions using a non-closed division operation given by paper Pan and Wang (Int J Fuzzy Syst 144:1–15, 2020).
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References
Pan, X., Wang, Y.: An enhanced technique for order preference by similarity to ideal solutions and its application to renewable energy resources selection problem. Int. J. Fuzzy Syst. 144, 1–15 (2020)
Oztaysi, B.: A group decision making approach using interval type-2 fuzzy AHP for enterprise information systems project selection. J. Multiple-Val. Logic Soft Comput. 24(5), 475–500 (2015)
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Meniz, B. A Note on Fuzzy Cosine Function. Int. J. Fuzzy Syst. 24, 216–217 (2022). https://doi.org/10.1007/s40815-021-01127-5
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DOI: https://doi.org/10.1007/s40815-021-01127-5