Shukla, S. K.; Kumar, A.; Kumari, A.; Saxena, S.; Kumar, D. On ∆ Operation over Fermatean Fuzzy Sets: An Application to a De-I-Fuzzification Technique. Nep J. Math. Sci. 2025, 6 (2), 23-36. https://doi.org/10.3126/njmathsci.v6i2.83823.