# Fuzzy logic and approximate reasoning

```@article{Zadeh2004FuzzyLA,
title={Fuzzy logic and approximate reasoning},
journal={Synthese},
year={2004},
volume={30},
pages={407-428}
}```
• Published 1 September 1975
• Computer Science, Philosophy
• Synthese
The term fuzzy logic is used in this paper to describe an imprecise logical system, FL, in which the truth-values are fuzzy subsets of the unit interval with linguistic labels such as true, false, not true, very true, quite true, not very true and not very false, etc. The truth-value set, ℐ, of FL is assumed to be generated by a context-free grammar, with a semantic rule providing a means of computing the meaning of each linguistic truth-value in ℐ as a fuzzy subset of [0, 1].Since ℐ is not…
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