# many-valued logic

- A logic that acknowledges more than the two classical truth-values of truth and falsity. Intermediate values may be motivated by the demands of vagueness, of avoiding the logical paradoxes, and of avoiding the view that future contingent propositions are determinately true or false, this being thought to lead to fatalism . The original three-valued system in modern logic is due to the Polish logician Jan Łukaziewicz. See also fuzzy logic, sea battle.

*Philosophy dictionary.
Academic.
2011.*

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**Many-valued logic**— In logic, a many valued logic (also multi or multiple valued logic) is a propositional calculus in which there are more than two truth values. Traditionally, in Aristotle s logical calculus, there were only two possible values (i.e., true and… … Wikipedia**many-valued logic**— daugiareikšmė logika statusas T sritis automatika atitikmenys: angl. many valued logic; multiple valued logic; multivalued logic vok. mehrdeutige Logik, f; mehrstellige Logik, f; mehrwertige Logik, f rus. многозначная логика, f pranc. logique… … Automatikos terminų žodynas**logic, many-valued**— Formal system in which the well formed formulae are interpreted as being able to take on values other than the two classical values of truth or falsity. The number of values possible for well formed formulae in systems of many valued logic ranges … Universalium**Multi-valued logic**— Multi valued logics are logical calculi in which there are more than two truth values. Traditionally, logical calculi are two valued that is, there are only two possible truth values (i.e. truth and falsehood) for any proposition to take. An… … Wikipedia**multiple-valued logic**— daugiareikšmė logika statusas T sritis automatika atitikmenys: angl. many valued logic; multiple valued logic; multivalued logic vok. mehrdeutige Logik, f; mehrstellige Logik, f; mehrwertige Logik, f rus. многозначная логика, f pranc. logique… … Automatikos terminų žodynas**multi-valued logic**— See many valued logic … Philosophy dictionary**logic**— logicless, adj. /loj ik/, n. 1. the science that investigates the principles governing correct or reliable inference. 2. a particular method of reasoning or argumentation: We were unable to follow his logic. 3. the system or principles of… … Universalium**Logic**— For other uses, see Logic (disambiguation). Philosophy … Wikipedia**logic, history of**— Introduction the history of the discipline from its origins among the ancient Greeks to the present time. Origins of logic in the West Precursors of ancient logic There was a medieval tradition according to which the Greek philosopher … Universalium**logic, philosophy of**— Philosophical study of the nature and scope of logic. Examples of questions raised in the philosophy of logic are: In virtue of what features of reality are the laws of logic true? ; How do we know the truths of logic? ; and Could the laws of… … Universalium