Some results on the addition of fuzzy intervals

Abstract A simple new method of computing T -sum of fuzzy intervals having the same results as the sum of fuzzy intervals based on the weakest t-norm T W is introduced. This work extends that of Mesiar [Fuzzy Sets and Systems 91 (1997) 231–237] and Markova [Fuzzy Sets and Systems 91 (1997) 253–258].

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