law of the excluded middle

law of the excluded middle
law (or principle) of the excluded middle
Logic the principle that one (and one only) of two contradictory propositions must be true

Useful english dictionary. 2012.

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  • law of the excluded middle — Contradiction Con tra*dic tion, n. [L. contradictio answer, objection: cf. F. contradiction.] 1. An assertion of the contrary to what has been said or affirmed; denial of the truth of a statement or assertion; contrary declaration; gainsaying.… …   The Collaborative International Dictionary of English

  • law (or principle) of the excluded middle Logic — the principle that one (and one only) of two contradictory propositions must be true. → exclude …   English new terms dictionary

  • Law of excluded middle — This article uses forms of logical notation. For a concise description of the symbols used in this notation, see Table of logic symbols. In logic, the law of the excluded middle states that the propositional calculus formula P ∨ ¬ P ( P or not P… …   Wikipedia

  • excluded middle, principle of — (or law of ) The logical law asserting that either p or not p . It excludes middle cases such as propositions being half correct or more or less right. The principle directly asserting that each proposition is either true or false is properly… …   Philosophy dictionary

  • excluded middle — /əkskludəd ˈmɪdl/ (say uhkskloohduhd midl) noun law of the, Logic the law which states that a proposition is either true or false, or that a thing either has or does not have a given property …  

  • Law of thought — The laws of thought are fundamental logical rules, with a long tradition in the history of philosophy, which collectively prescribe how a rational mind must think. To break any of the laws of thought (for example, to contradict oneself) is to be… …   Wikipedia

  • EXCLUDED MIDDLE —    the LOGICAL law which states that A is either B or not B …   Concise dictionary of Religion

  • The Geography of Thought — Richard Nisbett s book The Geography of Thought proposes that the passion for strong ontology and scientific rationality based on forward chaining from axioms is essentially a Western phenomenon. The ancient Greek passion for abstract categories… …   Wikipedia

  • law of excluded middle — a principle in logic: if one of two contradictory statements is denied the other must be affirmed * * * Logic. the principle that any proposition must be either true or false …   Useful english dictionary

  • law of excluded middle — Logic. the principle that any proposition must be either true or false. * * * …   Universalium

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