Issue No. 04 - April (1969 vol. 18)
P.N. Marinos , IEEE
Fuzzy logic deals with propositions which may be ascribed values between falsehood and truth (0 and 1) subjectively in either a continuous or a discrete fashion. This is in contrast to ordinary logic (two-valued or k-valued logic) in which a given proposition is ascribed values objectively using either deterministic or probabilistic approaches.
Fuzzy logic, fuzzy sets, fuzzy systems, multivalued logic.
P.N. Marinos, "Fuzzy Logic and its Application to Switching Systems", IEEE Transactions on Computers, vol. 18, no. , pp. 343-348, April 1969, doi:10.1109/T-C.1969.222662