On the meaning of approximate reasoning − An unassuming subsidiary to Lotfi Zadeh’s paper dedicated to the memory of Grigore Moisil −


  • Horia-Nicolai L. Teodorescu Gheorghe Asachi Technical University, Iasi, Romania Institute for Computer Science, Romanian Academy, Iasi Branch


logic, truth value, natural language, inference


The concept of “approximate reasoning” is central to Zadeh’s contributions in logic. Standard fuzzy logic as we use today is only one potential interpretation of Zadeh’s concept. I discuss various meanings for the syntagme "approximate reasoning" as intuitively presented in the paper Zadeh dedicated to the memory of Grigore C. Moisil in 1975.


L.A. Zadeh, Fuzzy logic = computing with words. Fuzzy Systems, IEEE Transactions on, Volume: 4 Issue 2, pp. 103-111 (May 1996)

L.A. Zadeh, The concept of a linguistic variable and its application to approximate reasoning - I, Information Sciences, vol. 8, no. 3, pp. 199-249, July 1975. http://dx.doi.org/10.1016/0020-0255(75)90036-5

L.A. Zadeh, Fuzzy Logic and Approximate Reasoning (In Memory of Grigore Moisil). Synthese, vol. 30, (1975), pp. 407-428, D. Reidel Publishing Co, Dordrecht, Holland http://dx.doi.org/10.1007/BF00485052

G. Georgescu, A. Iorgulescu, S. Rudeanu, Grigore C. Moisil (1906 - 1973) and his School in Algebraic Logic. Int. J. Computers, Communications & Control, Vol. I (2006), No. 1, pp. 81-99

Z. Lemnaouar and A. Abdelaziz, On the representation of L-M algebra by intuitionistic fuzzy subsets. ARIMA J., Volume 4 (2006), pp. 72-85



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