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A characterization of rational amalgamation operations Cutello, Vincenzo Montero De Juan, Francisco Javier This paper deals with amalgamation of fuzzy opinions when a fixed number of individuals is faced with an unknown number of alternatives. The aggregation rule is defined by means of intensity aggregation operations that verify certain ethical conditions, and assuming fuzzy rationality as defined in [1, 2]. A necessary and sufficient condition for non-irrationality is presented, along with comments on the importance of the number of alternatives. 2023-06-20T17:01:34Z 2023-06-20T17:01:34Z 1993 journal article Cutello, V., Montero, J.: A characterization of rational amalgamation operations. International Journal of Approximate Reasoning. 8, 325-344 (1993). https://doi.org/10.1016/0888-613X(93)90028-C 0888-613X 10.1016/0888-613X(93)90028-C https://hdl.handle.net/20.500.14352/57646 https//doi.org/10.1016/0888-613X(93)90028-C http://www.sciencedirect.com/science/article/pii/0888613X9390028C eng PB91-0389 open access Elsevier Science INC