deontic logic

deontic logic
Branch of modal logic that studies the permitted, the obligatory, and the forbidden, which are characterized as deontic modalities (Greek, deontos: "of that which is binding").

It seeks to systematize the abstract, purely conceptual relations between propositions in this sphere, such as the following: If an act is obligatory, then its performance must be permitted and its omission forbidden. In given circumstances, every act is such that either it or its omission is permitted. Modal logic leaves to substantive disciplines such as ethics and law the concrete questions of what specific acts or states of affairs are to be forbidden, permitted, or the like.

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Universalium. 2010.

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  • Deontic logic — is the field of logic that is concerned with obligation, permission, and related concepts. Alternatively, a deontic logic is a formal system that attempts to capture the essential logical features of these concepts. Typically, a deontic logic… …   Wikipedia

  • deontic logic — A logical calculus created by adding operators ‘O p ’ (it ought to be the case that p ) and ‘P p ’ (it is permissible that p ) to a basic system such as the propositional calculus, together with rules of inference for them. A deontic logic will… …   Philosophy dictionary

  • deontic logic — noun the modal logic of obligation and permissibility • Hypernyms: ↑modal logic …   Useful english dictionary

  • deontic logic — noun a) The study of obligation, permission, and related concepts. b) A formal system capturing the concepts of obligation and permission. See Also: modal logic …   Wiktionary

  • deontic — logic …   Philosophy dictionary

  • deontic logics — deontic logic …   Philosophy dictionary

  • 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

  • Logic — For other uses, see Logic (disambiguation). Philosophy …   Wikipedia

  • 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

  • deontic — de·on·tic (dē ŏnʹtĭk) adj. Of, relating to, or concerning duties or obligations: deontic logic.   [Greek deon, deont , obligation, necessity. See deontology.] * * * …   Universalium

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