二值逻辑的扩展，其中陈述不必是真或假，但可以具有介于 0 和 1 之间的真值程度。这种系统在为现实世界的系统（如电梯）设计控制逻辑时非常有用。
在电视剧《数字追凶》第四季的开篇剧集“信任度量” (2007) 中，数学天才查理·艾普斯试图使用模糊逻辑来构建一个信任度量，以衡量逃犯和被指控的叛徒科尔比·格兰杰的可信程度。
模糊逻辑
参见
真势模态, 假, 逻辑, 真使用 Wolfram|Alpha 探索
参考文献
Cignoli, R. L. O.; D'Ottaviano, I. M. L.; 和 Mundici, D. Algebraic Foundations of Many-Valued Reasoning. Dordrecht, Netherlands: Kluwer, 2000.Gottwald, S. A Treatise on Many-Valued Logics. Baldock, Hertfordshire, England: Research Studies Press, 2001.Hájek, P. Metamathematics of Fuzzy Logic. Dordrecht, Netherlands: Kluwer, 1998.McNeill, D. Fuzzy Logic: A Practical Approach. New York: Academic Press, 1994.McNeill, D. and Freiberger, P. Fuzzy Logic: The Discovery of a Revolutionary Computer Technology and How It is Changing Our World. New York: Simon and Schuster, 1993.Nguyen, H. T. and Walker, E. A. A First Course in Fuzzy Logic. Boca Raton, FL: CRC Press, 1996.Novák, V.; Perfilieva, I.; and Močkor, J. Mathematical Principles of Fuzzy Logic. Dordrecht, Netherlands: Kluwer, 1999.Novák, V. and Perfilieva, I. (Eds.). Discovering the World with Fuzzy Logic. Heidelberg, Germany: Springer-Verlag, 2000.Weisstein, E. W. "Books about Fuzzy Logic." http://www.ericweisstein.com/encyclopedias/books/FuzzyLogic.html.Yager, R. R. and Zadeh, L. A. (Eds.). An Introduction to Fuzzy Logic Applications in Intelligent Systems. Boston, MA: Kluwer, 1992.Zadeh, L. and Kacprzyk, J. (Eds.). Fuzzy Logic for the Management of Uncertainty. New York: Wiley, 1992.在 Wolfram|Alpha 中被引用
模糊逻辑请引用为
Weisstein, Eric W. “模糊逻辑。” 来自 MathWorld--一个 Wolfram 网络资源。 https://mathworld.net.cn/FuzzyLogic.html