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Fuzzy Syllogisms, Numerical Square, Triangle of Contraries, Inter-bivalence
Fuzzy Syllogisms, Numerical Square, Triangle of Contraries, Inter-bivalence
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Ferdin;o Cavaliere
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A new Predicate Calculus, called “Distinctive” D, is presented in the form. of the Hexagon of Opposition, in which the Particular Yba (= only some b are a) is the contradictory of the Universal Uba (= all or no b are a). Y is preferred, as a primitive, to I or O, because it is more “natural” than the others. Typical inferences of the systems are the obversions: Yba=Yba′ (= only some b are not a), Uba=Uba′ (=...
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